57 changed files with 2248 additions and 1806 deletions
@ -1,19 +0,0 @@ |
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/*kimi k2.5*/ |
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P(prompt): |
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将上述 Python 程序完整移植为 Java 程序,文件名为 `TemperatureConverter.java`。 |
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- 在 Java 源码中保留与扩展注释,解释每个方法的功能与参数(中文注释可接受)。 |
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A(AI Answer): |
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*Java程序 |
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*关键语法对照说明 |
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/*claude haiku 4.5*/ |
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P: |
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可选加分项: |
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支持命令行参数模式(例如 java TemperatureConverter 36.6 C)。 |
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支持批量转换(从文件读取多行温度并输出结果) |
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将代码修改以符合以上加分项 |
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A: |
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*修改过的Java程序 |
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*README.md |
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*temperatures.txt /*测试文件*/ |
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*测试 |
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@ -1,512 +0,0 @@ |
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# 温度转换器 - 完整使用指南 |
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## 📋 目录 |
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1. [概述](#概述) |
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2. [特性](#特性) |
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3. [使用方法](#使用方法) |
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4. [交互模式智能纠正](#交互模式智能纠正) |
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5. [编译与运行](#编译与运行) |
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6. [示例](#示例) |
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7. [技术细节](#技术细节) |
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--- |
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## 概述 |
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温度转换器是一个功能完整的Java程序,支持摄氏度(Celsius)和华氏度(Fahrenheit)之间的互相转换。 |
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**支持三种工作模式**: |
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1. **命令行参数模式** - 直接在命令行传入温度和单位 |
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2. **批量转换模式** - 从文件读取温度数据进行批量处理 |
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3. **交互式模式** - 实时输入温度数据,获得智能纠正提示 |
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--- |
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## 特性 |
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### ✨ 核心功能 |
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- ✅ 摄氏度 ↔ 华氏度 双向转换 |
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- ✅ 精确到小数点后两位 |
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- ✅ 三种灵活的使用模式 |
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- ✅ 智能的错误诊断和纠正建议 |
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### 🎯 转换公式 |
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| 方向 | 公式 | |
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|-----|------| |
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| 摄氏 → 华氏 | F = C × 9/5 + 32 | |
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| 华氏 → 摄氏 | C = (F - 32) × 5/9 | |
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### 🚀 加分项(已实现) |
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1. **✅ 命令行参数模式** |
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- 支持 `java TemperatureConverter 36.6 C` |
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- 自动识别粘连格式(如 `36.6c`) |
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2. **✅ 批量转换模式** |
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- 从文件读取多行温度数据 |
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- 支持注释行和空行 |
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- 提供转换统计 |
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|
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3. **✅ 交互模式智能纠正** |
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- 自动识别和修复粘连单位 |
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- 缺少单位时给出具体提示 |
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- 无效输入时指出问题所在 |
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--- |
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## 使用方法 |
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### 1️⃣ 命令行参数模式 |
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**最快速的使用方式** - 单行转换,无需等待 |
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#### 语法 |
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```bash |
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java TemperatureConverter <温度> <单位> |
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``` |
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#### 示例 |
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```bash |
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# 标准格式(有空格) |
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java TemperatureConverter 36.6 C |
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# 输出:36.60 °C = 97.88 °F |
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# 粘连格式(无空格) |
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java TemperatureConverter 36.6c |
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# 输出:36.60 °C = 97.88 °F |
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# 华氏到摄氏 |
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java TemperatureConverter 98.6 F |
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# 输出:98.60 °F = 37.00 °C |
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``` |
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#### 特点 |
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- 快速高效,适合脚本编程 |
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- 自动处理粘连格式 |
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- 三种模式中最简洁 |
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--- |
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### 2️⃣ 批量转换模式 |
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**为数据处理设计** - 处理多行温度数据 |
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#### 语法 |
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```bash |
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java TemperatureConverter <文件路径> |
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``` |
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#### 文件格式 |
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每行一条数据,格式:`<温度值> <单位>` |
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``` |
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# 示例:temperatures.txt |
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# 常见体温 |
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36.6 C |
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37.5 C |
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# 常见环境温度 |
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25 C |
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30 C |
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# 华氏度 |
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98.6 F |
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77 F |
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# 特殊温度 |
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0 C |
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100 C |
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32 F |
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212 F |
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``` |
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#### 运行示例 |
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```bash |
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java TemperatureConverter temperatures.txt |
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``` |
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#### 输出 |
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``` |
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从文件读取温度数据:temperatures.txt |
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======================================== |
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第 4 行:36.60 °C = 97.88 °F |
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第 5 行:37.50 °C = 99.50 °F |
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第 8 行:25.00 °C = 77.00 °F |
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... |
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======================================== |
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处理完成:共处理 21 行,成功转换 10 条。 |
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``` |
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#### 特点 |
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- 支持注释行(以 `#` 开头) |
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- 支持空行(自动跳过) |
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- 显示处理统计信息 |
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- 适合批量数据导入/导出 |
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--- |
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### 3️⃣ 交互式模式(推荐) |
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**用户友好的交互方式** - 实时输入,即时反馈 |
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#### 启动 |
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```bash |
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java TemperatureConverter |
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``` |
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#### 功能说明 |
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**自动纠正粘连单位** |
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当输入数值和单位直接相连时(如 `100f`),程序会自动识别并显示纠正提示: |
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``` |
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> 100f |
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✓ 已自动纠正输入:'100f' → '100 F' |
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100.00 °F = 37.78 °C |
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``` |
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支持的粘连格式: |
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- `100f`, `100F` → 自动转换为 `100 F` |
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- `36.6c`, `36.6C` → 自动转换为 `36.6 C` |
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**智能缺少单位提示** |
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缺少温度单位时,程序会拒绝转换并给出具体建议: |
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``` |
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> 100 |
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⚠️ 缺少温度单位! |
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请指定 C(摄氏度)或 F(华氏度) |
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示例:100 C 或 100 F |
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``` |
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**无效单位诊断** |
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不支持的单位会被立即识别并告知: |
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``` |
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> 100 K |
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❌ 不支持的温度单位:'K' |
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支持的单位:C(摄氏度)或 F(华氏度) |
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示例:100 C 或 100 F |
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``` |
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**无效数值诊断** |
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数值格式不正确时会给出清晰提示: |
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``` |
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> abc C |
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❌ 温度值不是有效的数字:'abc' |
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请输入数值(如 36.6, 100 等) |
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示例:36.6 C |
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``` |
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**标准格式直接转换** |
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格式正确时直接显示结果: |
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``` |
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> 36.6 C |
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36.60 °C = 97.88 °F |
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> 98.6 F |
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98.60 °F = 37.00 °C |
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``` |
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**退出程序** |
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``` |
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> quit |
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程序退出。 |
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或者 |
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> exit |
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程序退出。 |
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``` |
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--- |
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## 交互模式智能纠正 |
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### 纠正功能详解 |
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| 错误类型 | 输入示例 | 程序行为 | 输出 | |
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|--------|--------|--------|------| |
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| **粘连单位** | `100f` | 自动纠正并转换 | `✓ 已自动纠正输入:'100f' → '100 F'`<br/>`100.00 °F = 37.78 °C` | |
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| **有空格粘连** | `100 f` | 直接识别并转换 | `100.00 °F = 37.78 °C` | |
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| **缺少单位** | `100` | 拒绝并提示 | `⚠️ 缺少温度单位!`<br/>` 示例:100 C 或 100 F` | |
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||||
| **无效单位** | `100 K` | 拒绝并说明原因 | `❌ 不支持的温度单位:'K'`<br/>` 示例:100 C 或 100 F` | |
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| **无效数值** | `abc C` | 拒绝并给出示例 | `❌ 温度值不是有效的数字:'abc'`<br/>` 示例:36.6 C` | |
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| **标准正确** | `36.6 C` | 直接转换 | `36.60 °C = 97.88 °F` | |
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### 完整交互示例 |
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``` |
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======================================== |
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温度转换器 - 交互式模式 |
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======================================== |
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请输入要转换的温度与单位(例如 36.6 C 或 97 F) |
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输入 'quit' 或 'exit' 退出程序 |
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======================================== |
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|
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> 36.6 C |
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36.60 °C = 97.88 °F |
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> 100f |
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✓ 已自动纠正输入:'100f' → '100 F' |
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100.00 °F = 37.78 °C |
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|
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> 100 f |
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100.00 °F = 37.78 °C |
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|
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> 100 |
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⚠️ 缺少温度单位! |
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请指定 C(摄氏度)或 F(华氏度) |
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示例:100 C 或 100 F |
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|
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> 100 K |
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❌ 不支持的温度单位:'K' |
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支持的单位:C(摄氏度)或 F(华氏度) |
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示例:100 C 或 100 F |
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|
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> abc C |
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❌ 温度值不是有效的数字:'abc' |
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请输入数值(如 36.6, 100 等) |
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示例:36.6 C |
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|
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> quit |
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程序退出。 |
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``` |
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|
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--- |
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|
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## 编译与运行 |
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|
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### 前置要求 |
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|
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- Java JDK 8 或更高版本 |
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- 命令行/终端访问权限 |
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|
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### 编译 |
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|
|
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```bash |
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# 进入项目目录 |
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cd d:\VisualStudioProgram\VSCodePrograms\JavaLearningProject |
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# 编译源代码 |
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javac TemperatureConverter.java |
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``` |
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|
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编译成功后会生成 `TemperatureConverter.class` 文件。 |
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|
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### 运行 |
|
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|
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#### 模式选择 |
|
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|
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```bash |
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# 1. 交互式模式(推荐) |
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java TemperatureConverter |
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|
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# 2. 命令行参数模式 |
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java TemperatureConverter 36.6 C |
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|
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# 3. 批量转换模式 |
|
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java TemperatureConverter temperatures.txt |
|
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|
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# 4. 显示帮助信息 |
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java TemperatureConverter -h |
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java TemperatureConverter --help |
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||||
``` |
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||||
|
|
||||
--- |
|
||||
|
|
||||
## 示例 |
|
||||
|
|
||||
### 各种场景的使用 |
|
||||
|
|
||||
#### 场景1:快速查询单个温度 |
|
||||
|
|
||||
```bash |
|
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$ java TemperatureConverter 37 C |
|
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37.00 °C = 98.60 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景2:处理粘连格式 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 37c |
|
||||
37.00 °C = 98.60 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景3:医学应用 - 正常体温 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 36.5 C |
|
||||
36.50 °C = 97.70 °F |
|
||||
|
|
||||
$ java TemperatureConverter 98.6 F |
|
||||
98.60 °F = 37.00 °C |
|
||||
``` |
|
||||
|
|
||||
#### 场景4:物理学应用 - 相变点 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 0 C |
|
||||
0.00 °C = 32.00 °F |
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||||
|
|
||||
$ java TemperatureConverter 100 C |
|
||||
100.00 °C = 212.00 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景5:批量处理数据 |
|
||||
|
|
||||
创建 `test.txt`: |
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||||
|
|
||||
``` |
|
||||
# 测试数据 |
|
||||
25 C |
|
||||
30 C |
|
||||
35 C |
|
||||
96.8 F |
|
||||
104 F |
|
||||
``` |
|
||||
|
|
||||
运行: |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter test.txt |
|
||||
从文件读取温度数据:test.txt |
|
||||
======================================== |
|
||||
第 2 行:25.00 °C = 77.00 °F |
|
||||
第 3 行:30.00 °C = 86.00 °F |
|
||||
第 4 行:35.00 °C = 95.00 °F |
|
||||
第 5 行:96.80 °F = 36.00 °C |
|
||||
第 6 行:104.00 °F = 40.00 °C |
|
||||
======================================== |
|
||||
处理完成:共处理 6 行,成功转换 5 条。 |
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||||
``` |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 技术细节 |
|
||||
|
|
||||
### 程序结构 |
|
||||
|
|
||||
``` |
|
||||
TemperatureConverter.java |
|
||||
├── 转换方法 |
|
||||
│ ├── celsiusToFahrenheit() - C → F |
|
||||
│ └── fahrenheitToCelsius() - F → C |
|
||||
│ |
|
||||
├── 智能诊断方法 |
|
||||
│ ├── extractAdjacent() - 提取粘连格式 |
|
||||
│ ├── analyzeAndSuggestFix() - 错误分析与建议 |
|
||||
│ └── convertWithValidatedInput() - 执行转换 |
|
||||
│ |
|
||||
├── 交互方法 |
|
||||
│ ├── interactiveMode() - 交互式模式 |
|
||||
│ └── convertSingleTemperature() - 单个转换(命令行/文件) |
|
||||
│ |
|
||||
├── 数据处理方法 |
|
||||
│ ├── convertFromFile() - 批量文件处理 |
|
||||
│ └── showUsage() - 使用说明 |
|
||||
│ |
|
||||
└── 入口点 |
|
||||
└── main() - 程序入口,模式选择 |
|
||||
``` |
|
||||
|
|
||||
### 粘连单位识别 |
|
||||
|
|
||||
**正则表达式**:`^(\d+(?:\.\d+)?)\s*([CcFf])$` |
|
||||
|
|
||||
- `\d+` - 一个或多个数字 |
|
||||
- `(?:\.\d+)?` - 可选的小数部分 |
|
||||
- `\s*` - 零个或多个空白字符 |
|
||||
- `[CcFf]` - 单位字母(C/c/F/f) |
|
||||
|
|
||||
**支持的格式**: |
|
||||
- `100f` → ["100", "F"] |
|
||||
- `36.6c` → ["36.6", "C"] |
|
||||
- `100 f` → ["100", "F"](允许空格) |
|
||||
- `36.6 c` → ["36.6", "C"](允许空格) |
|
||||
|
|
||||
### 三种模式的差异 |
|
||||
|
|
||||
| 特性 | 交互模式 | 命令行模式 | 文件模式 | |
|
||||
|-----|--------|---------|--------| |
|
||||
| **启用粘连识别** | ✅ 是 | ✅ 是 | ✅ 是 | |
|
||||
| **显示纠正提示** | ✅ 是 | ❌ 否 | ❌ 否 | |
|
||||
| **缺少单位处理** | ❌ 拒绝 | ✅ 默认C | ✅ 默认C | |
|
||||
| **错误详细提示** | ✅ 是 | ❌ 否 | ❌ 否 | |
|
||||
| **单/多行处理** | 多行循环 | 单行 | 多行批处理 | |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 常见问题 |
|
||||
|
|
||||
**Q: 如何让程序接受更多的温度单位(如K、R)?** |
|
||||
|
|
||||
A: 修改 `analyzeAndSuggestFix()` 方法中的单位验证逻辑,添加新的单位判断条件和转换公式。 |
|
||||
|
|
||||
**Q: 如何修改输出精度(目前是两位小数)?** |
|
||||
|
|
||||
A: 更改 `System.out.printf()` 中的格式字符串,例如 `%.2f` 改为 `%.3f` 表示三位小数。 |
|
||||
|
|
||||
**Q: 批量模式中,某一行出错会影响整个文件处理吗?** |
|
||||
|
|
||||
A: 不会。程序会跳过无效行,继续处理后续行,最后显示成功和失败的统计。 |
|
||||
|
|
||||
**Q: 能否在命令行模式中显示纠正提示?** |
|
||||
|
|
||||
A: 可以。修改 `convertSingleTemperature()` 方法中对 `extractAdjacent()` 的调用,改为调用 `analyzeAndSuggestFix()` 并传入 `true` 参数。 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 文件列表 |
|
||||
|
|
||||
| 文件 | 说明 | |
|
||||
|-----|------| |
|
||||
| `TemperatureConverter.java` | 源代码文件 | |
|
||||
| `TemperatureConverter.class` | 编译后的字节码 | |
|
||||
| `temperatures.txt` | 示例数据文件 | |
|
||||
| `README_增强版.md` | 原始功能说明(已合并到本文档) | |
|
||||
| `交互模式改进说明.md` | 交互模式详细说明(已合并到本文档) | |
|
||||
| `粘连单位修复总结.md` | 修复说明(已合并到本文档) | |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 版本信息 |
|
||||
|
|
||||
- **程序版本**:2.0 |
|
||||
- **功能扩展**:3项加分项 + 交互模式智能纠正 |
|
||||
- **最后更新**:2026年03月 |
|
||||
- **Java版本要求**:JDK 8+ |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 总结 |
|
||||
|
|
||||
这个温度转换器程序演示了以下编程概念: |
|
||||
|
|
||||
1. **正则表达式** - 灵活的模式匹配和数据提取 |
|
||||
2. **异常处理** - 文件IO和数据验证 |
|
||||
3. **模式设计** - 多种工作模式的统一管理 |
|
||||
4. **用户交互** - 友好的错误提示和智能建议 |
|
||||
5. **代码组织** - 清晰的方法划分和职责分离 |
|
||||
|
|
||||
祝你使用愉快! 🎉 |
|
||||
@ -1,338 +0,0 @@ |
|||||
import java.util.Scanner; |
|
||||
import java.io.File; |
|
||||
import java.io.FileNotFoundException; |
|
||||
|
|
||||
/** |
|
||||
* 温度转换器示例程序(Java) |
|
||||
* 支持摄氏度(C)与华氏度(F)之间互转 |
|
||||
* 增强版本:支持命令行参数和文件批量转换 |
|
||||
*/ |
|
||||
public class TemperatureConverter_PytoJava { |
|
||||
|
|
||||
/** |
|
||||
* 将摄氏度转换为华氏度。 |
|
||||
* |
|
||||
* 换算公式:F = C × 9/5 + 32 |
|
||||
* |
|
||||
* @param c 摄氏温度(浮点数) |
|
||||
* @return 对应的华氏温度(浮点数) |
|
||||
*/ |
|
||||
public static double celsiusToFahrenheit(double c) { |
|
||||
return c * 9.0 / 5.0 + 32.0; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 将华氏度转换为摄氏度。 |
|
||||
* |
|
||||
* 换算公式:C = (F - 32) × 5/9 |
|
||||
* |
|
||||
* @param f 华氏温度(浮点数) |
|
||||
* @return 对应的摄氏温度(浮点数) |
|
||||
*/ |
|
||||
public static double fahrenheitToCelsius(double f) { |
|
||||
return (f - 32.0) * 5.0 / 9.0; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 从粘连格式中提取数值和单位。 |
|
||||
* 例如:100f → ["100", "F"],36.6c → ["36.6", "C"],100 f → ["100", "F"] |
|
||||
* 支持单位前的空格。 |
|
||||
* |
|
||||
* @param input 粘连格式的输入 |
|
||||
* @return 包含数值和单位的数组,如果无法提取则返回 null |
|
||||
*/ |
|
||||
public static String[] extractAdjacent(String input) { |
|
||||
String trimmed = input.trim(); |
|
||||
// 使用正则表达式匹配粘连格式,允许单位前有空格
|
|
||||
// 格式:数字(可选小数) + 可选空格 + C或F
|
|
||||
java.util.regex.Pattern pattern = java.util.regex.Pattern.compile("^(\\d+(?:\\.\\d+)?)\\s*([CcFf])$"); |
|
||||
java.util.regex.Matcher matcher = pattern.matcher(trimmed); |
|
||||
|
|
||||
if (matcher.matches()) { |
|
||||
String value = matcher.group(1); |
|
||||
String unit = matcher.group(2).toUpperCase(); |
|
||||
return new String[]{value, unit}; |
|
||||
} |
|
||||
return null; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 分析并提供错误诊断和建议。 |
|
||||
* 在交互模式中使用此方法进行智能纠正。 |
|
||||
* |
|
||||
* @param input 用户输入 |
|
||||
* @param isInteractiveMode 是否为交互模式 |
|
||||
* @return 如果输入有效返回true,否则返回false并打印诊断信息 |
|
||||
*/ |
|
||||
public static boolean analyzeAndSuggestFix(String input, boolean isInteractiveMode) { |
|
||||
input = input.trim(); |
|
||||
|
|
||||
// 1. 检查粘连单位模式(如 100f)
|
|
||||
String[] adjacent = extractAdjacent(input); |
|
||||
if (adjacent != null) { |
|
||||
// 判断是否真正是粘连格式(数值和单位直接相连,无空格)
|
|
||||
boolean isDirectlyAdjacent = input.matches("^\\d+(?:\\.\\d+)?[CcFf]$"); |
|
||||
if (isDirectlyAdjacent && isInteractiveMode) { |
|
||||
System.out.println("✓ 已自动纠正输入:'" + input + "' → '" + adjacent[0] + " " + adjacent[1] + "'"); |
|
||||
} |
|
||||
// 进行转换
|
|
||||
return convertWithValidatedInput(Double.parseDouble(adjacent[0]), adjacent[1]); |
|
||||
} |
|
||||
|
|
||||
// 2. 分割输入
|
|
||||
String[] parts = input.split("\\s+"); |
|
||||
|
|
||||
// 3. 检查缺少单位模式(如 100)
|
|
||||
if (parts.length == 1) { |
|
||||
try { |
|
||||
Double.parseDouble(parts[0]); |
|
||||
// 能解析为数字,但缺少单位
|
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("⚠️ 缺少温度单位!"); |
|
||||
System.out.println(" 请指定 C(摄氏度)或 F(华氏度)"); |
|
||||
System.out.println(" 示例:" + parts[0] + " C 或 " + parts[0] + " F"); |
|
||||
} |
|
||||
return false; |
|
||||
} catch (NumberFormatException e) { |
|
||||
// 既不是数字也不是正确格式
|
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 温度值不是有效的数字:'" + parts[0] + "'"); |
|
||||
System.out.println(" 请输入数值(如 36.6, 100 等)"); |
|
||||
System.out.println(" 示例:36.6 C"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
// 4. 验证数值有效性
|
|
||||
try { |
|
||||
double value = Double.parseDouble(parts[0]); |
|
||||
String unit = parts[1].toUpperCase(); |
|
||||
|
|
||||
// 5. 验证单位有效性
|
|
||||
if (!unit.startsWith("C") && !unit.startsWith("F")) { |
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 不支持的温度单位:'" + unit + "'"); |
|
||||
System.out.println(" 支持的单位:C(摄氏度)或 F(华氏度)"); |
|
||||
System.out.println(" 示例:" + parts[0] + " C 或 " + parts[0] + " F"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
|
|
||||
// 转换成功
|
|
||||
return convertWithValidatedInput(value, unit); |
|
||||
|
|
||||
} catch (NumberFormatException e) { |
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 温度值不是有效的数字:'" + parts[0] + "'"); |
|
||||
System.out.println(" 请输入数值(如 36.6, 100 等)"); |
|
||||
System.out.println(" 示例:36.6 C"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 使用验证过的数值和单位进行转换。 |
|
||||
* 这是真正的转换逻辑,不包含错误处理。 |
|
||||
* |
|
||||
* @param value 温度值 |
|
||||
* @param unit 单位(C 或 F) |
|
||||
* @return 始终返回 true(如果调用说明数据有效) |
|
||||
*/ |
|
||||
public static boolean convertWithValidatedInput(double value, String unit) { |
|
||||
if (unit.startsWith("C")) { |
|
||||
double f = celsiusToFahrenheit(value); |
|
||||
System.out.printf("%.2f °C = %.2f °F%n", value, f); |
|
||||
} else if (unit.startsWith("F")) { |
|
||||
double c = fahrenheitToCelsius(value); |
|
||||
System.out.printf("%.2f °F = %.2f °C%n", value, c); |
|
||||
} |
|
||||
return true; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 处理单个温度转换(命令行/文件模式用,宽松验证)。 |
|
||||
* |
|
||||
* @param input 温度输入字符串,格式:"数值 单位",例如 "36.6 C" |
|
||||
* @return 转换成功返回true,失败返回false |
|
||||
*/ |
|
||||
public static boolean convertSingleTemperature(String input) { |
|
||||
input = input.trim(); |
|
||||
|
|
||||
// 检查输入是否为空
|
|
||||
if (input.isEmpty()) { |
|
||||
return false; |
|
||||
} |
|
||||
|
|
||||
// 检查粘连单位并自动分离
|
|
||||
String[] adjacent = extractAdjacent(input); |
|
||||
if (adjacent != null) { |
|
||||
try { |
|
||||
return convertWithValidatedInput(Double.parseDouble(adjacent[0]), adjacent[1]); |
|
||||
} catch (NumberFormatException e) { |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
// 按空白字符分割输入字符串
|
|
||||
String[] parts = input.split("\\s+"); |
|
||||
|
|
||||
try { |
|
||||
double value = Double.parseDouble(parts[0]); |
|
||||
// 如果没有单位,在命令行/文件模式中仍然尝试转换(宽松模式)
|
|
||||
// 但在交互模式中会被 analyzeAndSuggestFix 拒绝
|
|
||||
String unit = (parts.length > 1) ? parts[1].toUpperCase() : "C"; |
|
||||
|
|
||||
if (unit.startsWith("C")) { |
|
||||
double f = celsiusToFahrenheit(value); |
|
||||
System.out.printf("%.2f °C = %.2f °F%n", value, f); |
|
||||
} else if (unit.startsWith("F")) { |
|
||||
double c = fahrenheitToCelsius(value); |
|
||||
System.out.printf("%.2f °F = %.2f °C%n", value, c); |
|
||||
} else { |
|
||||
return false; |
|
||||
} |
|
||||
return true; |
|
||||
|
|
||||
} catch (NumberFormatException e) { |
|
||||
return false; |
|
||||
} catch (Exception e) { |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 从文件中批量读取温度数据并进行转换。 |
|
||||
* 文件中每一行包含一个温度及其单位。 |
|
||||
* |
|
||||
* @param filename 文件路径 |
|
||||
*/ |
|
||||
public static void convertFromFile(String filename) { |
|
||||
File file = new File(filename); |
|
||||
|
|
||||
if (!file.exists()) { |
|
||||
System.out.println("文件不存在:" + filename); |
|
||||
return; |
|
||||
} |
|
||||
|
|
||||
try { |
|
||||
Scanner fileScanner = new Scanner(file); |
|
||||
int lineNum = 0; |
|
||||
int successCount = 0; |
|
||||
|
|
||||
System.out.println("从文件读取温度数据:" + filename); |
|
||||
System.out.println("========================================"); |
|
||||
|
|
||||
while (fileScanner.hasNextLine()) { |
|
||||
lineNum++; |
|
||||
String line = fileScanner.nextLine(); |
|
||||
|
|
||||
// 跳过空行和注释行(以#开头)
|
|
||||
if (line.trim().isEmpty() || line.trim().startsWith("#")) { |
|
||||
continue; |
|
||||
} |
|
||||
|
|
||||
System.out.print("第 " + lineNum + " 行:"); |
|
||||
if (convertSingleTemperature(line)) { |
|
||||
successCount++; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("处理完成:共处理 " + lineNum + " 行,成功转换 " + successCount + " 条。"); |
|
||||
|
|
||||
fileScanner.close(); |
|
||||
|
|
||||
} catch (FileNotFoundException e) { |
|
||||
System.out.println("无法打开文件:" + filename); |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 交互式模式:提示用户输入温度进行转换,使用智能诊断。 |
|
||||
*/ |
|
||||
public static void interactiveMode() { |
|
||||
Scanner scanner = new Scanner(System.in); |
|
||||
|
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("温度转换器 - 交互式模式"); |
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("请输入要转换的温度与单位(例如 36.6 C 或 97 F)"); |
|
||||
System.out.println("输入 'quit' 或 'exit' 退出程序"); |
|
||||
System.out.println("========================================"); |
|
||||
|
|
||||
while (true) { |
|
||||
System.out.print("> "); |
|
||||
String input = scanner.nextLine(); |
|
||||
|
|
||||
if (input.equalsIgnoreCase("quit") || input.equalsIgnoreCase("exit")) { |
|
||||
System.out.println("程序退出。"); |
|
||||
break; |
|
||||
} |
|
||||
|
|
||||
// 在交互模式中使用智能诊断
|
|
||||
if (!analyzeAndSuggestFix(input, true)) { |
|
||||
// 诊断方法已经打印了具体的错误信息
|
|
||||
} |
|
||||
} |
|
||||
|
|
||||
scanner.close(); |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 显示使用说明。 |
|
||||
*/ |
|
||||
public static void showUsage() { |
|
||||
System.out.println("温度转换器 - 使用说明"); |
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("用法1(命令行参数模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava <温度> <单位>"); |
|
||||
System.out.println(" 例如:java TemperatureConverter_PytoJava 36.6 C"); |
|
||||
System.out.println(); |
|
||||
System.out.println("用法2(批量转换模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava <文件路径>"); |
|
||||
System.out.println(" 例如:java TemperatureConverter_PytoJava temperatures.txt"); |
|
||||
System.out.println(" 文件格式:每行一条温度数据,格式为 '温度 单位'"); |
|
||||
System.out.println(); |
|
||||
System.out.println("用法3(交互式模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava"); |
|
||||
System.out.println(" 然后按提示输入温度数据"); |
|
||||
System.out.println("========================================"); |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 程序入口主方法。 |
|
||||
* 支持三种模式: |
|
||||
* 1. 命令行参数模式:java TemperatureConverter_PytoJava 36.6 C |
|
||||
* 2. 文件批量转换:java TemperatureConverter_PytoJava temperatures.txt |
|
||||
* 3. 交互式模式:java TemperatureConverter_PytoJava |
|
||||
* |
|
||||
* @param args 命令行参数 |
|
||||
*/ |
|
||||
public static void main(String[] args) { |
|
||||
if (args.length == 0) { |
|
||||
// 交互式模式
|
|
||||
interactiveMode(); |
|
||||
} else if (args.length == 1) { |
|
||||
// 检查是否为文件路径(包含.txt或其他扩展名,或者是一个存在的文件)
|
|
||||
File file = new File(args[0]); |
|
||||
if (file.exists() && file.isFile()) { |
|
||||
// 文件批量转换模式
|
|
||||
convertFromFile(args[0]); |
|
||||
} else if (args[0].equalsIgnoreCase("-h") || args[0].equalsIgnoreCase("--help")) { |
|
||||
// 显示帮助信息
|
|
||||
showUsage(); |
|
||||
} else { |
|
||||
// 可能是单个温度但缺少单位,默认使用摄氏度
|
|
||||
System.out.println("处理输入:" + args[0]); |
|
||||
convertSingleTemperature(args[0]); |
|
||||
} |
|
||||
} else if (args.length == 2) { |
|
||||
// 命令行参数模式:温度和单位
|
|
||||
convertSingleTemperature(args[0] + " " + args[1]); |
|
||||
} else { |
|
||||
showUsage(); |
|
||||
} |
|
||||
} |
|
||||
} |
|
||||
@ -1,19 +0,0 @@ |
|||||
/*kimi k2.5*/ |
|
||||
P(prompt): |
|
||||
将上述 Python 程序完整移植为 Java 程序,文件名为 `TemperatureConverter.java`。 |
|
||||
- 在 Java 源码中保留与扩展注释,解释每个方法的功能与参数(中文注释可接受)。 |
|
||||
A(AI Answer): |
|
||||
*Java程序 |
|
||||
*关键语法对照说明 |
|
||||
/*claude haiku 4.5*/ |
|
||||
P: |
|
||||
可选加分项: |
|
||||
|
|
||||
支持命令行参数模式(例如 java TemperatureConverter 36.6 C)。 |
|
||||
支持批量转换(从文件读取多行温度并输出结果) |
|
||||
将代码修改以符合以上加分项 |
|
||||
A: |
|
||||
*修改过的Java程序 |
|
||||
*README.md |
|
||||
*temperatures.txt /*测试文件*/ |
|
||||
*测试 |
|
||||
@ -1,512 +0,0 @@ |
|||||
# 温度转换器 - 完整使用指南 |
|
||||
|
|
||||
## 📋 目录 |
|
||||
|
|
||||
1. [概述](#概述) |
|
||||
2. [特性](#特性) |
|
||||
3. [使用方法](#使用方法) |
|
||||
4. [交互模式智能纠正](#交互模式智能纠正) |
|
||||
5. [编译与运行](#编译与运行) |
|
||||
6. [示例](#示例) |
|
||||
7. [技术细节](#技术细节) |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 概述 |
|
||||
|
|
||||
温度转换器是一个功能完整的Java程序,支持摄氏度(Celsius)和华氏度(Fahrenheit)之间的互相转换。 |
|
||||
|
|
||||
**支持三种工作模式**: |
|
||||
1. **命令行参数模式** - 直接在命令行传入温度和单位 |
|
||||
2. **批量转换模式** - 从文件读取温度数据进行批量处理 |
|
||||
3. **交互式模式** - 实时输入温度数据,获得智能纠正提示 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 特性 |
|
||||
|
|
||||
### ✨ 核心功能 |
|
||||
|
|
||||
- ✅ 摄氏度 ↔ 华氏度 双向转换 |
|
||||
- ✅ 精确到小数点后两位 |
|
||||
- ✅ 三种灵活的使用模式 |
|
||||
- ✅ 智能的错误诊断和纠正建议 |
|
||||
|
|
||||
### 🎯 转换公式 |
|
||||
|
|
||||
| 方向 | 公式 | |
|
||||
|-----|------| |
|
||||
| 摄氏 → 华氏 | F = C × 9/5 + 32 | |
|
||||
| 华氏 → 摄氏 | C = (F - 32) × 5/9 | |
|
||||
|
|
||||
### 🚀 加分项(已实现) |
|
||||
|
|
||||
1. **✅ 命令行参数模式** |
|
||||
- 支持 `java TemperatureConverter 36.6 C` |
|
||||
- 自动识别粘连格式(如 `36.6c`) |
|
||||
|
|
||||
2. **✅ 批量转换模式** |
|
||||
- 从文件读取多行温度数据 |
|
||||
- 支持注释行和空行 |
|
||||
- 提供转换统计 |
|
||||
|
|
||||
3. **✅ 交互模式智能纠正** |
|
||||
- 自动识别和修复粘连单位 |
|
||||
- 缺少单位时给出具体提示 |
|
||||
- 无效输入时指出问题所在 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 使用方法 |
|
||||
|
|
||||
### 1️⃣ 命令行参数模式 |
|
||||
|
|
||||
**最快速的使用方式** - 单行转换,无需等待 |
|
||||
|
|
||||
#### 语法 |
|
||||
|
|
||||
```bash |
|
||||
java TemperatureConverter <温度> <单位> |
|
||||
``` |
|
||||
|
|
||||
#### 示例 |
|
||||
|
|
||||
```bash |
|
||||
# 标准格式(有空格) |
|
||||
java TemperatureConverter 36.6 C |
|
||||
# 输出:36.60 °C = 97.88 °F |
|
||||
|
|
||||
# 粘连格式(无空格) |
|
||||
java TemperatureConverter 36.6c |
|
||||
# 输出:36.60 °C = 97.88 °F |
|
||||
|
|
||||
# 华氏到摄氏 |
|
||||
java TemperatureConverter 98.6 F |
|
||||
# 输出:98.60 °F = 37.00 °C |
|
||||
``` |
|
||||
|
|
||||
#### 特点 |
|
||||
|
|
||||
- 快速高效,适合脚本编程 |
|
||||
- 自动处理粘连格式 |
|
||||
- 三种模式中最简洁 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
### 2️⃣ 批量转换模式 |
|
||||
|
|
||||
**为数据处理设计** - 处理多行温度数据 |
|
||||
|
|
||||
#### 语法 |
|
||||
|
|
||||
```bash |
|
||||
java TemperatureConverter <文件路径> |
|
||||
``` |
|
||||
|
|
||||
#### 文件格式 |
|
||||
|
|
||||
每行一条数据,格式:`<温度值> <单位>` |
|
||||
|
|
||||
``` |
|
||||
# 示例:temperatures.txt |
|
||||
# 常见体温 |
|
||||
36.6 C |
|
||||
37.5 C |
|
||||
|
|
||||
# 常见环境温度 |
|
||||
25 C |
|
||||
30 C |
|
||||
|
|
||||
# 华氏度 |
|
||||
98.6 F |
|
||||
77 F |
|
||||
|
|
||||
# 特殊温度 |
|
||||
0 C |
|
||||
100 C |
|
||||
32 F |
|
||||
212 F |
|
||||
``` |
|
||||
|
|
||||
#### 运行示例 |
|
||||
|
|
||||
```bash |
|
||||
java TemperatureConverter temperatures.txt |
|
||||
``` |
|
||||
|
|
||||
#### 输出 |
|
||||
|
|
||||
``` |
|
||||
从文件读取温度数据:temperatures.txt |
|
||||
======================================== |
|
||||
第 4 行:36.60 °C = 97.88 °F |
|
||||
第 5 行:37.50 °C = 99.50 °F |
|
||||
第 8 行:25.00 °C = 77.00 °F |
|
||||
... |
|
||||
======================================== |
|
||||
处理完成:共处理 21 行,成功转换 10 条。 |
|
||||
``` |
|
||||
|
|
||||
#### 特点 |
|
||||
|
|
||||
- 支持注释行(以 `#` 开头) |
|
||||
- 支持空行(自动跳过) |
|
||||
- 显示处理统计信息 |
|
||||
- 适合批量数据导入/导出 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
### 3️⃣ 交互式模式(推荐) |
|
||||
|
|
||||
**用户友好的交互方式** - 实时输入,即时反馈 |
|
||||
|
|
||||
#### 启动 |
|
||||
|
|
||||
```bash |
|
||||
java TemperatureConverter |
|
||||
``` |
|
||||
|
|
||||
#### 功能说明 |
|
||||
|
|
||||
**自动纠正粘连单位** |
|
||||
|
|
||||
当输入数值和单位直接相连时(如 `100f`),程序会自动识别并显示纠正提示: |
|
||||
|
|
||||
``` |
|
||||
> 100f |
|
||||
✓ 已自动纠正输入:'100f' → '100 F' |
|
||||
100.00 °F = 37.78 °C |
|
||||
``` |
|
||||
|
|
||||
支持的粘连格式: |
|
||||
- `100f`, `100F` → 自动转换为 `100 F` |
|
||||
- `36.6c`, `36.6C` → 自动转换为 `36.6 C` |
|
||||
|
|
||||
**智能缺少单位提示** |
|
||||
|
|
||||
缺少温度单位时,程序会拒绝转换并给出具体建议: |
|
||||
|
|
||||
``` |
|
||||
> 100 |
|
||||
⚠️ 缺少温度单位! |
|
||||
请指定 C(摄氏度)或 F(华氏度) |
|
||||
示例:100 C 或 100 F |
|
||||
``` |
|
||||
|
|
||||
**无效单位诊断** |
|
||||
|
|
||||
不支持的单位会被立即识别并告知: |
|
||||
|
|
||||
``` |
|
||||
> 100 K |
|
||||
❌ 不支持的温度单位:'K' |
|
||||
支持的单位:C(摄氏度)或 F(华氏度) |
|
||||
示例:100 C 或 100 F |
|
||||
``` |
|
||||
|
|
||||
**无效数值诊断** |
|
||||
|
|
||||
数值格式不正确时会给出清晰提示: |
|
||||
|
|
||||
``` |
|
||||
> abc C |
|
||||
❌ 温度值不是有效的数字:'abc' |
|
||||
请输入数值(如 36.6, 100 等) |
|
||||
示例:36.6 C |
|
||||
``` |
|
||||
|
|
||||
**标准格式直接转换** |
|
||||
|
|
||||
格式正确时直接显示结果: |
|
||||
|
|
||||
``` |
|
||||
> 36.6 C |
|
||||
36.60 °C = 97.88 °F |
|
||||
|
|
||||
> 98.6 F |
|
||||
98.60 °F = 37.00 °C |
|
||||
``` |
|
||||
|
|
||||
**退出程序** |
|
||||
|
|
||||
``` |
|
||||
> quit |
|
||||
程序退出。 |
|
||||
|
|
||||
或者 |
|
||||
|
|
||||
> exit |
|
||||
程序退出。 |
|
||||
``` |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 交互模式智能纠正 |
|
||||
|
|
||||
### 纠正功能详解 |
|
||||
|
|
||||
| 错误类型 | 输入示例 | 程序行为 | 输出 | |
|
||||
|--------|--------|--------|------| |
|
||||
| **粘连单位** | `100f` | 自动纠正并转换 | `✓ 已自动纠正输入:'100f' → '100 F'`<br/>`100.00 °F = 37.78 °C` | |
|
||||
| **有空格粘连** | `100 f` | 直接识别并转换 | `100.00 °F = 37.78 °C` | |
|
||||
| **缺少单位** | `100` | 拒绝并提示 | `⚠️ 缺少温度单位!`<br/>` 示例:100 C 或 100 F` | |
|
||||
| **无效单位** | `100 K` | 拒绝并说明原因 | `❌ 不支持的温度单位:'K'`<br/>` 示例:100 C 或 100 F` | |
|
||||
| **无效数值** | `abc C` | 拒绝并给出示例 | `❌ 温度值不是有效的数字:'abc'`<br/>` 示例:36.6 C` | |
|
||||
| **标准正确** | `36.6 C` | 直接转换 | `36.60 °C = 97.88 °F` | |
|
||||
|
|
||||
### 完整交互示例 |
|
||||
|
|
||||
``` |
|
||||
======================================== |
|
||||
温度转换器 - 交互式模式 |
|
||||
======================================== |
|
||||
请输入要转换的温度与单位(例如 36.6 C 或 97 F) |
|
||||
输入 'quit' 或 'exit' 退出程序 |
|
||||
======================================== |
|
||||
|
|
||||
> 36.6 C |
|
||||
36.60 °C = 97.88 °F |
|
||||
|
|
||||
> 100f |
|
||||
✓ 已自动纠正输入:'100f' → '100 F' |
|
||||
100.00 °F = 37.78 °C |
|
||||
|
|
||||
> 100 f |
|
||||
100.00 °F = 37.78 °C |
|
||||
|
|
||||
> 100 |
|
||||
⚠️ 缺少温度单位! |
|
||||
请指定 C(摄氏度)或 F(华氏度) |
|
||||
示例:100 C 或 100 F |
|
||||
|
|
||||
> 100 K |
|
||||
❌ 不支持的温度单位:'K' |
|
||||
支持的单位:C(摄氏度)或 F(华氏度) |
|
||||
示例:100 C 或 100 F |
|
||||
|
|
||||
> abc C |
|
||||
❌ 温度值不是有效的数字:'abc' |
|
||||
请输入数值(如 36.6, 100 等) |
|
||||
示例:36.6 C |
|
||||
|
|
||||
> quit |
|
||||
程序退出。 |
|
||||
``` |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 编译与运行 |
|
||||
|
|
||||
### 前置要求 |
|
||||
|
|
||||
- Java JDK 8 或更高版本 |
|
||||
- 命令行/终端访问权限 |
|
||||
|
|
||||
### 编译 |
|
||||
|
|
||||
```bash |
|
||||
# 进入项目目录 |
|
||||
cd d:\VisualStudioProgram\VSCodePrograms\JavaLearningProject |
|
||||
|
|
||||
# 编译源代码 |
|
||||
javac TemperatureConverter.java |
|
||||
``` |
|
||||
|
|
||||
编译成功后会生成 `TemperatureConverter.class` 文件。 |
|
||||
|
|
||||
### 运行 |
|
||||
|
|
||||
#### 模式选择 |
|
||||
|
|
||||
```bash |
|
||||
# 1. 交互式模式(推荐) |
|
||||
java TemperatureConverter |
|
||||
|
|
||||
# 2. 命令行参数模式 |
|
||||
java TemperatureConverter 36.6 C |
|
||||
|
|
||||
# 3. 批量转换模式 |
|
||||
java TemperatureConverter temperatures.txt |
|
||||
|
|
||||
# 4. 显示帮助信息 |
|
||||
java TemperatureConverter -h |
|
||||
java TemperatureConverter --help |
|
||||
``` |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 示例 |
|
||||
|
|
||||
### 各种场景的使用 |
|
||||
|
|
||||
#### 场景1:快速查询单个温度 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 37 C |
|
||||
37.00 °C = 98.60 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景2:处理粘连格式 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 37c |
|
||||
37.00 °C = 98.60 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景3:医学应用 - 正常体温 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 36.5 C |
|
||||
36.50 °C = 97.70 °F |
|
||||
|
|
||||
$ java TemperatureConverter 98.6 F |
|
||||
98.60 °F = 37.00 °C |
|
||||
``` |
|
||||
|
|
||||
#### 场景4:物理学应用 - 相变点 |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter 0 C |
|
||||
0.00 °C = 32.00 °F |
|
||||
|
|
||||
$ java TemperatureConverter 100 C |
|
||||
100.00 °C = 212.00 °F |
|
||||
``` |
|
||||
|
|
||||
#### 场景5:批量处理数据 |
|
||||
|
|
||||
创建 `test.txt`: |
|
||||
|
|
||||
``` |
|
||||
# 测试数据 |
|
||||
25 C |
|
||||
30 C |
|
||||
35 C |
|
||||
96.8 F |
|
||||
104 F |
|
||||
``` |
|
||||
|
|
||||
运行: |
|
||||
|
|
||||
```bash |
|
||||
$ java TemperatureConverter test.txt |
|
||||
从文件读取温度数据:test.txt |
|
||||
======================================== |
|
||||
第 2 行:25.00 °C = 77.00 °F |
|
||||
第 3 行:30.00 °C = 86.00 °F |
|
||||
第 4 行:35.00 °C = 95.00 °F |
|
||||
第 5 行:96.80 °F = 36.00 °C |
|
||||
第 6 行:104.00 °F = 40.00 °C |
|
||||
======================================== |
|
||||
处理完成:共处理 6 行,成功转换 5 条。 |
|
||||
``` |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 技术细节 |
|
||||
|
|
||||
### 程序结构 |
|
||||
|
|
||||
``` |
|
||||
TemperatureConverter.java |
|
||||
├── 转换方法 |
|
||||
│ ├── celsiusToFahrenheit() - C → F |
|
||||
│ └── fahrenheitToCelsius() - F → C |
|
||||
│ |
|
||||
├── 智能诊断方法 |
|
||||
│ ├── extractAdjacent() - 提取粘连格式 |
|
||||
│ ├── analyzeAndSuggestFix() - 错误分析与建议 |
|
||||
│ └── convertWithValidatedInput() - 执行转换 |
|
||||
│ |
|
||||
├── 交互方法 |
|
||||
│ ├── interactiveMode() - 交互式模式 |
|
||||
│ └── convertSingleTemperature() - 单个转换(命令行/文件) |
|
||||
│ |
|
||||
├── 数据处理方法 |
|
||||
│ ├── convertFromFile() - 批量文件处理 |
|
||||
│ └── showUsage() - 使用说明 |
|
||||
│ |
|
||||
└── 入口点 |
|
||||
└── main() - 程序入口,模式选择 |
|
||||
``` |
|
||||
|
|
||||
### 粘连单位识别 |
|
||||
|
|
||||
**正则表达式**:`^(\d+(?:\.\d+)?)\s*([CcFf])$` |
|
||||
|
|
||||
- `\d+` - 一个或多个数字 |
|
||||
- `(?:\.\d+)?` - 可选的小数部分 |
|
||||
- `\s*` - 零个或多个空白字符 |
|
||||
- `[CcFf]` - 单位字母(C/c/F/f) |
|
||||
|
|
||||
**支持的格式**: |
|
||||
- `100f` → ["100", "F"] |
|
||||
- `36.6c` → ["36.6", "C"] |
|
||||
- `100 f` → ["100", "F"](允许空格) |
|
||||
- `36.6 c` → ["36.6", "C"](允许空格) |
|
||||
|
|
||||
### 三种模式的差异 |
|
||||
|
|
||||
| 特性 | 交互模式 | 命令行模式 | 文件模式 | |
|
||||
|-----|--------|---------|--------| |
|
||||
| **启用粘连识别** | ✅ 是 | ✅ 是 | ✅ 是 | |
|
||||
| **显示纠正提示** | ✅ 是 | ❌ 否 | ❌ 否 | |
|
||||
| **缺少单位处理** | ❌ 拒绝 | ✅ 默认C | ✅ 默认C | |
|
||||
| **错误详细提示** | ✅ 是 | ❌ 否 | ❌ 否 | |
|
||||
| **单/多行处理** | 多行循环 | 单行 | 多行批处理 | |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 常见问题 |
|
||||
|
|
||||
**Q: 如何让程序接受更多的温度单位(如K、R)?** |
|
||||
|
|
||||
A: 修改 `analyzeAndSuggestFix()` 方法中的单位验证逻辑,添加新的单位判断条件和转换公式。 |
|
||||
|
|
||||
**Q: 如何修改输出精度(目前是两位小数)?** |
|
||||
|
|
||||
A: 更改 `System.out.printf()` 中的格式字符串,例如 `%.2f` 改为 `%.3f` 表示三位小数。 |
|
||||
|
|
||||
**Q: 批量模式中,某一行出错会影响整个文件处理吗?** |
|
||||
|
|
||||
A: 不会。程序会跳过无效行,继续处理后续行,最后显示成功和失败的统计。 |
|
||||
|
|
||||
**Q: 能否在命令行模式中显示纠正提示?** |
|
||||
|
|
||||
A: 可以。修改 `convertSingleTemperature()` 方法中对 `extractAdjacent()` 的调用,改为调用 `analyzeAndSuggestFix()` 并传入 `true` 参数。 |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 文件列表 |
|
||||
|
|
||||
| 文件 | 说明 | |
|
||||
|-----|------| |
|
||||
| `TemperatureConverter.java` | 源代码文件 | |
|
||||
| `TemperatureConverter.class` | 编译后的字节码 | |
|
||||
| `temperatures.txt` | 示例数据文件 | |
|
||||
| `README_增强版.md` | 原始功能说明(已合并到本文档) | |
|
||||
| `交互模式改进说明.md` | 交互模式详细说明(已合并到本文档) | |
|
||||
| `粘连单位修复总结.md` | 修复说明(已合并到本文档) | |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 版本信息 |
|
||||
|
|
||||
- **程序版本**:2.0 |
|
||||
- **功能扩展**:3项加分项 + 交互模式智能纠正 |
|
||||
- **最后更新**:2026年03月 |
|
||||
- **Java版本要求**:JDK 8+ |
|
||||
|
|
||||
--- |
|
||||
|
|
||||
## 总结 |
|
||||
|
|
||||
这个温度转换器程序演示了以下编程概念: |
|
||||
|
|
||||
1. **正则表达式** - 灵活的模式匹配和数据提取 |
|
||||
2. **异常处理** - 文件IO和数据验证 |
|
||||
3. **模式设计** - 多种工作模式的统一管理 |
|
||||
4. **用户交互** - 友好的错误提示和智能建议 |
|
||||
5. **代码组织** - 清晰的方法划分和职责分离 |
|
||||
|
|
||||
祝你使用愉快! 🎉 |
|
||||
@ -1,338 +0,0 @@ |
|||||
import java.util.Scanner; |
|
||||
import java.io.File; |
|
||||
import java.io.FileNotFoundException; |
|
||||
|
|
||||
/** |
|
||||
* 温度转换器示例程序(Java) |
|
||||
* 支持摄氏度(C)与华氏度(F)之间互转 |
|
||||
* 增强版本:支持命令行参数和文件批量转换 |
|
||||
*/ |
|
||||
public class TemperatureConverter_PytoJava { |
|
||||
|
|
||||
/** |
|
||||
* 将摄氏度转换为华氏度。 |
|
||||
* |
|
||||
* 换算公式:F = C × 9/5 + 32 |
|
||||
* |
|
||||
* @param c 摄氏温度(浮点数) |
|
||||
* @return 对应的华氏温度(浮点数) |
|
||||
*/ |
|
||||
public static double celsiusToFahrenheit(double c) { |
|
||||
return c * 9.0 / 5.0 + 32.0; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 将华氏度转换为摄氏度。 |
|
||||
* |
|
||||
* 换算公式:C = (F - 32) × 5/9 |
|
||||
* |
|
||||
* @param f 华氏温度(浮点数) |
|
||||
* @return 对应的摄氏温度(浮点数) |
|
||||
*/ |
|
||||
public static double fahrenheitToCelsius(double f) { |
|
||||
return (f - 32.0) * 5.0 / 9.0; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 从粘连格式中提取数值和单位。 |
|
||||
* 例如:100f → ["100", "F"],36.6c → ["36.6", "C"],100 f → ["100", "F"] |
|
||||
* 支持单位前的空格。 |
|
||||
* |
|
||||
* @param input 粘连格式的输入 |
|
||||
* @return 包含数值和单位的数组,如果无法提取则返回 null |
|
||||
*/ |
|
||||
public static String[] extractAdjacent(String input) { |
|
||||
String trimmed = input.trim(); |
|
||||
// 使用正则表达式匹配粘连格式,允许单位前有空格
|
|
||||
// 格式:数字(可选小数) + 可选空格 + C或F
|
|
||||
java.util.regex.Pattern pattern = java.util.regex.Pattern.compile("^(\\d+(?:\\.\\d+)?)\\s*([CcFf])$"); |
|
||||
java.util.regex.Matcher matcher = pattern.matcher(trimmed); |
|
||||
|
|
||||
if (matcher.matches()) { |
|
||||
String value = matcher.group(1); |
|
||||
String unit = matcher.group(2).toUpperCase(); |
|
||||
return new String[]{value, unit}; |
|
||||
} |
|
||||
return null; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 分析并提供错误诊断和建议。 |
|
||||
* 在交互模式中使用此方法进行智能纠正。 |
|
||||
* |
|
||||
* @param input 用户输入 |
|
||||
* @param isInteractiveMode 是否为交互模式 |
|
||||
* @return 如果输入有效返回true,否则返回false并打印诊断信息 |
|
||||
*/ |
|
||||
public static boolean analyzeAndSuggestFix(String input, boolean isInteractiveMode) { |
|
||||
input = input.trim(); |
|
||||
|
|
||||
// 1. 检查粘连单位模式(如 100f)
|
|
||||
String[] adjacent = extractAdjacent(input); |
|
||||
if (adjacent != null) { |
|
||||
// 判断是否真正是粘连格式(数值和单位直接相连,无空格)
|
|
||||
boolean isDirectlyAdjacent = input.matches("^\\d+(?:\\.\\d+)?[CcFf]$"); |
|
||||
if (isDirectlyAdjacent && isInteractiveMode) { |
|
||||
System.out.println("✓ 已自动纠正输入:'" + input + "' → '" + adjacent[0] + " " + adjacent[1] + "'"); |
|
||||
} |
|
||||
// 进行转换
|
|
||||
return convertWithValidatedInput(Double.parseDouble(adjacent[0]), adjacent[1]); |
|
||||
} |
|
||||
|
|
||||
// 2. 分割输入
|
|
||||
String[] parts = input.split("\\s+"); |
|
||||
|
|
||||
// 3. 检查缺少单位模式(如 100)
|
|
||||
if (parts.length == 1) { |
|
||||
try { |
|
||||
Double.parseDouble(parts[0]); |
|
||||
// 能解析为数字,但缺少单位
|
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("⚠️ 缺少温度单位!"); |
|
||||
System.out.println(" 请指定 C(摄氏度)或 F(华氏度)"); |
|
||||
System.out.println(" 示例:" + parts[0] + " C 或 " + parts[0] + " F"); |
|
||||
} |
|
||||
return false; |
|
||||
} catch (NumberFormatException e) { |
|
||||
// 既不是数字也不是正确格式
|
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 温度值不是有效的数字:'" + parts[0] + "'"); |
|
||||
System.out.println(" 请输入数值(如 36.6, 100 等)"); |
|
||||
System.out.println(" 示例:36.6 C"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
// 4. 验证数值有效性
|
|
||||
try { |
|
||||
double value = Double.parseDouble(parts[0]); |
|
||||
String unit = parts[1].toUpperCase(); |
|
||||
|
|
||||
// 5. 验证单位有效性
|
|
||||
if (!unit.startsWith("C") && !unit.startsWith("F")) { |
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 不支持的温度单位:'" + unit + "'"); |
|
||||
System.out.println(" 支持的单位:C(摄氏度)或 F(华氏度)"); |
|
||||
System.out.println(" 示例:" + parts[0] + " C 或 " + parts[0] + " F"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
|
|
||||
// 转换成功
|
|
||||
return convertWithValidatedInput(value, unit); |
|
||||
|
|
||||
} catch (NumberFormatException e) { |
|
||||
if (isInteractiveMode) { |
|
||||
System.out.println("❌ 温度值不是有效的数字:'" + parts[0] + "'"); |
|
||||
System.out.println(" 请输入数值(如 36.6, 100 等)"); |
|
||||
System.out.println(" 示例:36.6 C"); |
|
||||
} |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 使用验证过的数值和单位进行转换。 |
|
||||
* 这是真正的转换逻辑,不包含错误处理。 |
|
||||
* |
|
||||
* @param value 温度值 |
|
||||
* @param unit 单位(C 或 F) |
|
||||
* @return 始终返回 true(如果调用说明数据有效) |
|
||||
*/ |
|
||||
public static boolean convertWithValidatedInput(double value, String unit) { |
|
||||
if (unit.startsWith("C")) { |
|
||||
double f = celsiusToFahrenheit(value); |
|
||||
System.out.printf("%.2f °C = %.2f °F%n", value, f); |
|
||||
} else if (unit.startsWith("F")) { |
|
||||
double c = fahrenheitToCelsius(value); |
|
||||
System.out.printf("%.2f °F = %.2f °C%n", value, c); |
|
||||
} |
|
||||
return true; |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 处理单个温度转换(命令行/文件模式用,宽松验证)。 |
|
||||
* |
|
||||
* @param input 温度输入字符串,格式:"数值 单位",例如 "36.6 C" |
|
||||
* @return 转换成功返回true,失败返回false |
|
||||
*/ |
|
||||
public static boolean convertSingleTemperature(String input) { |
|
||||
input = input.trim(); |
|
||||
|
|
||||
// 检查输入是否为空
|
|
||||
if (input.isEmpty()) { |
|
||||
return false; |
|
||||
} |
|
||||
|
|
||||
// 检查粘连单位并自动分离
|
|
||||
String[] adjacent = extractAdjacent(input); |
|
||||
if (adjacent != null) { |
|
||||
try { |
|
||||
return convertWithValidatedInput(Double.parseDouble(adjacent[0]), adjacent[1]); |
|
||||
} catch (NumberFormatException e) { |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
// 按空白字符分割输入字符串
|
|
||||
String[] parts = input.split("\\s+"); |
|
||||
|
|
||||
try { |
|
||||
double value = Double.parseDouble(parts[0]); |
|
||||
// 如果没有单位,在命令行/文件模式中仍然尝试转换(宽松模式)
|
|
||||
// 但在交互模式中会被 analyzeAndSuggestFix 拒绝
|
|
||||
String unit = (parts.length > 1) ? parts[1].toUpperCase() : "C"; |
|
||||
|
|
||||
if (unit.startsWith("C")) { |
|
||||
double f = celsiusToFahrenheit(value); |
|
||||
System.out.printf("%.2f °C = %.2f °F%n", value, f); |
|
||||
} else if (unit.startsWith("F")) { |
|
||||
double c = fahrenheitToCelsius(value); |
|
||||
System.out.printf("%.2f °F = %.2f °C%n", value, c); |
|
||||
} else { |
|
||||
return false; |
|
||||
} |
|
||||
return true; |
|
||||
|
|
||||
} catch (NumberFormatException e) { |
|
||||
return false; |
|
||||
} catch (Exception e) { |
|
||||
return false; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 从文件中批量读取温度数据并进行转换。 |
|
||||
* 文件中每一行包含一个温度及其单位。 |
|
||||
* |
|
||||
* @param filename 文件路径 |
|
||||
*/ |
|
||||
public static void convertFromFile(String filename) { |
|
||||
File file = new File(filename); |
|
||||
|
|
||||
if (!file.exists()) { |
|
||||
System.out.println("文件不存在:" + filename); |
|
||||
return; |
|
||||
} |
|
||||
|
|
||||
try { |
|
||||
Scanner fileScanner = new Scanner(file); |
|
||||
int lineNum = 0; |
|
||||
int successCount = 0; |
|
||||
|
|
||||
System.out.println("从文件读取温度数据:" + filename); |
|
||||
System.out.println("========================================"); |
|
||||
|
|
||||
while (fileScanner.hasNextLine()) { |
|
||||
lineNum++; |
|
||||
String line = fileScanner.nextLine(); |
|
||||
|
|
||||
// 跳过空行和注释行(以#开头)
|
|
||||
if (line.trim().isEmpty() || line.trim().startsWith("#")) { |
|
||||
continue; |
|
||||
} |
|
||||
|
|
||||
System.out.print("第 " + lineNum + " 行:"); |
|
||||
if (convertSingleTemperature(line)) { |
|
||||
successCount++; |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("处理完成:共处理 " + lineNum + " 行,成功转换 " + successCount + " 条。"); |
|
||||
|
|
||||
fileScanner.close(); |
|
||||
|
|
||||
} catch (FileNotFoundException e) { |
|
||||
System.out.println("无法打开文件:" + filename); |
|
||||
} |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 交互式模式:提示用户输入温度进行转换,使用智能诊断。 |
|
||||
*/ |
|
||||
public static void interactiveMode() { |
|
||||
Scanner scanner = new Scanner(System.in); |
|
||||
|
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("温度转换器 - 交互式模式"); |
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("请输入要转换的温度与单位(例如 36.6 C 或 97 F)"); |
|
||||
System.out.println("输入 'quit' 或 'exit' 退出程序"); |
|
||||
System.out.println("========================================"); |
|
||||
|
|
||||
while (true) { |
|
||||
System.out.print("> "); |
|
||||
String input = scanner.nextLine(); |
|
||||
|
|
||||
if (input.equalsIgnoreCase("quit") || input.equalsIgnoreCase("exit")) { |
|
||||
System.out.println("程序退出。"); |
|
||||
break; |
|
||||
} |
|
||||
|
|
||||
// 在交互模式中使用智能诊断
|
|
||||
if (!analyzeAndSuggestFix(input, true)) { |
|
||||
// 诊断方法已经打印了具体的错误信息
|
|
||||
} |
|
||||
} |
|
||||
|
|
||||
scanner.close(); |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 显示使用说明。 |
|
||||
*/ |
|
||||
public static void showUsage() { |
|
||||
System.out.println("温度转换器 - 使用说明"); |
|
||||
System.out.println("========================================"); |
|
||||
System.out.println("用法1(命令行参数模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava <温度> <单位>"); |
|
||||
System.out.println(" 例如:java TemperatureConverter_PytoJava 36.6 C"); |
|
||||
System.out.println(); |
|
||||
System.out.println("用法2(批量转换模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava <文件路径>"); |
|
||||
System.out.println(" 例如:java TemperatureConverter_PytoJava temperatures.txt"); |
|
||||
System.out.println(" 文件格式:每行一条温度数据,格式为 '温度 单位'"); |
|
||||
System.out.println(); |
|
||||
System.out.println("用法3(交互式模式):"); |
|
||||
System.out.println(" java TemperatureConverter_PytoJava"); |
|
||||
System.out.println(" 然后按提示输入温度数据"); |
|
||||
System.out.println("========================================"); |
|
||||
} |
|
||||
|
|
||||
/** |
|
||||
* 程序入口主方法。 |
|
||||
* 支持三种模式: |
|
||||
* 1. 命令行参数模式:java TemperatureConverter_PytoJava 36.6 C |
|
||||
* 2. 文件批量转换:java TemperatureConverter_PytoJava temperatures.txt |
|
||||
* 3. 交互式模式:java TemperatureConverter_PytoJava |
|
||||
* |
|
||||
* @param args 命令行参数 |
|
||||
*/ |
|
||||
public static void main(String[] args) { |
|
||||
if (args.length == 0) { |
|
||||
// 交互式模式
|
|
||||
interactiveMode(); |
|
||||
} else if (args.length == 1) { |
|
||||
// 检查是否为文件路径(包含.txt或其他扩展名,或者是一个存在的文件)
|
|
||||
File file = new File(args[0]); |
|
||||
if (file.exists() && file.isFile()) { |
|
||||
// 文件批量转换模式
|
|
||||
convertFromFile(args[0]); |
|
||||
} else if (args[0].equalsIgnoreCase("-h") || args[0].equalsIgnoreCase("--help")) { |
|
||||
// 显示帮助信息
|
|
||||
showUsage(); |
|
||||
} else { |
|
||||
// 可能是单个温度但缺少单位,默认使用摄氏度
|
|
||||
System.out.println("处理输入:" + args[0]); |
|
||||
convertSingleTemperature(args[0]); |
|
||||
} |
|
||||
} else if (args.length == 2) { |
|
||||
// 命令行参数模式:温度和单位
|
|
||||
convertSingleTemperature(args[0] + " " + args[1]); |
|
||||
} else { |
|
||||
showUsage(); |
|
||||
} |
|
||||
} |
|
||||
} |
|
||||
@ -1,34 +0,0 @@ |
|||||
请输入数值(如 36.6, 100 等) |
|
||||
示例:36.6 C |
|
||||
> 36.6c |
|
||||
? 已自动纠正输入:'36.6c' → '36.6 C' |
|
||||
36.60 °C = 97.88 °F |
|
||||
> 36.6f |
|
||||
? 已自动纠正输入:'36.6f' → '36.6 F' |
|
||||
36.60 °F = 2.56 °C |
|
||||
> 36.6 |
|
||||
?? 缺少温度单位! |
|
||||
请指定 C(摄氏度)或 F(华氏度) |
|
||||
示例:36.6 C 或 36.6 F |
|
||||
> 36.6 C |
|
||||
36.60 °C = 97.88 °F |
|
||||
> 97f |
|
||||
? 已自动纠正输入:'97f' → '97 F' |
|
||||
97.00 °F = 36.11 °C |
|
||||
> 97 f |
|
||||
97.00 °F = 36.11 °C |
|
||||
PS D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject> java TemperatureConverter temperatures.txt |
|
||||
从文件读取温度数据:temperatures.txt |
|
||||
======================================== |
|
||||
第 6 行:36.60 °C = 97.88 °F |
|
||||
第 7 行:37.50 °C = 99.50 °F |
|
||||
第 10 行:25.00 °C = 77.00 °F |
|
||||
第 11 行:30.00 °C = 86.00 °F |
|
||||
第 14 行:98.60 °F = 37.00 °C |
|
||||
第 15 行:77.00 °F = 25.00 °C |
|
||||
第 18 行:0.00 °C = 32.00 °F |
|
||||
第 19 行:100.00 °C = 212.00 °F |
|
||||
第 20 行:32.00 °F = 0.00 °C |
|
||||
第 21 行:212.00 °F = 100.00 °C |
|
||||
======================================== |
|
||||
处理完成:共处理 21 行,成功转换 10 条。 |
|
||||
@ -0,0 +1,76 @@ |
|||||
|
# 项目开发思路与步骤文档 (DEVELOPMENT.md) |
||||
|
|
||||
|
本文档详细记录了“电影评分网站影片数据抓取与分析项目”的完整开发思路、每一个步骤以及遇到的关键技术点。 |
||||
|
|
||||
|
--- |
||||
|
|
||||
|
## 一、 开发思路 (Development Philosophy) |
||||
|
|
||||
|
### 1. 目标设定 |
||||
|
开发一个基于 Java 的自动化工具,能够从豆瓣电影 Top 250 这种评分网站上自动化获取结构化的电影信息,并对其进行多维度的统计分析,最终将抽象的数据转化为直观的报告和可视化图表。 |
||||
|
|
||||
|
### 2. 技术选型 |
||||
|
- **核心语言**: Java 11 (利用其成熟的生态和强类型支持)。 |
||||
|
- **构建管理**: Maven (自动管理依赖和构建生命周期)。 |
||||
|
- **网页爬虫**: Jsoup (轻量级、强大的 HTML 解析库,支持 CSS 选择器)。 |
||||
|
- **数据分析**: Java 8+ Stream API (声明式的数据处理方式,高效且易于阅读)。 |
||||
|
- **数据序列化**: Jackson (工业级的 JSON 处理库)。 |
||||
|
- **可视化**: JFreeChart (老牌稳定的 Java 图表库)。 |
||||
|
- **代码简化**: Lombok (通过注解减少冗余的 Getter/Setter)。 |
||||
|
|
||||
|
### 3. 系统架构 (已升级为 Spring Boot 架构) |
||||
|
采用典型的 MVC 模式进行解耦,并引入 Web 层: |
||||
|
- **Model**: `Movie.java` (JPA 实体), `DirectorStats.java` (统计 DTO) |
||||
|
- **Repository**: `MovieRepository.java` (数据持久化层,支持 H2 数据库) |
||||
|
- **Service**: `MovieService.java` (业务逻辑与 Caffeine 缓存层) |
||||
|
- **Controller**: `DirectorController.java` (Web 接口与路由) |
||||
|
- **View**: Thymeleaf 模板 (响应式前端页面) |
||||
|
- **Crawler**: `MovieCrawler.java` (数据采集组件) |
||||
|
|
||||
|
--- |
||||
|
|
||||
|
## 二、 详细开发步骤 (Step-by-Step Guide) |
||||
|
|
||||
|
### 第 1 步:项目初始化与架构升级 |
||||
|
- 在 `pom.xml` 中引入 `spring-boot-starter-web`, `spring-boot-starter-data-jpa`, `spring-boot-starter-thymeleaf` 等。 |
||||
|
- 配置 H2 内存数据库和 Caffeine 缓存,确保接口响应时间在 500ms 以内。 |
||||
|
|
||||
|
### 第 2 步:定义数据实体与统计模型 |
||||
|
- 将 `Movie.java` 重构为 JPA 实体,增加 `id`, `type` (作品类型), `posterUrl` (海报链接) 等字段。 |
||||
|
- 创建 `DirectorStats.java` 用于承载导演作品数量、平均评分、总票房等聚合统计数据。 |
||||
|
|
||||
|
### 第 3 步:实现数据访问与业务逻辑 |
||||
|
- **Repository 层**: 使用 Spring Data JPA 的 `@Query` 编写复杂的聚合查询,支持按导演姓名搜索、作品类型过滤及分页统计。 |
||||
|
- **Service 层**: |
||||
|
- 集成 Spring Cache (@Cacheable),对耗时的排行榜查询进行 10 分钟缓存。 |
||||
|
- 实现 `refreshData` 方法,支持在爬虫抓取后自动更新数据库并清空缓存。 |
||||
|
|
||||
|
### 第 4 步:增强爬虫功能 |
||||
|
- 更新 `MovieCrawler.java`,利用 Jsoup 提取电影海报 URL 和作品类型。 |
||||
|
- 实现 `DataInitializer` (CommandLineRunner),在应用启动时自动触发爬取任务并将数据持久化到 H2 数据库。 |
||||
|
|
||||
|
### 第 5 步:开发响应式 Web 前端 |
||||
|
- 使用 **Bootstrap 5** 结合 **Thymeleaf** 开发导演排行榜页面 (`director_rankings.html`)。 |
||||
|
- **功能点**: |
||||
|
- **分页显示**: 默认每页 20 位导演。 |
||||
|
- **搜索与过滤**: 支持导演名模糊搜索和作品类型下拉过滤。 |
||||
|
- **交互设计**: 点击导演姓名可跳转至该导演的作品详情页 (`director_movies.html`)。 |
||||
|
- **加载状态**: 添加 Spinner 加载动画和响应时间监测。 |
||||
|
|
||||
|
### 第 6 步:性能优化与验证 |
||||
|
- 配置 Caffeine 缓存规格,平衡内存占用与响应速度。 |
||||
|
- 在 Controller 层记录请求耗时,确保在大数据量下依然满足 <500ms 的性能要求。 |
||||
|
|
||||
|
--- |
||||
|
|
||||
|
## 三、 遇到的挑战与解决方案 |
||||
|
1. **JPA 聚合查询复杂性**: 导演排行榜涉及 `COUNT`, `AVG`, `SUM` 等多个聚合函数。通过 `new com.movieratings.model.DirectorStats(...)` 构造器投影解决了 JPA 返回原始 Object 数组难以处理的问题。 |
||||
|
2. **响应式图片展示**: 海报图片大小不一。通过 CSS `object-fit: cover` 确保在排行榜缩略图和详情页大图显示中均保持比例协调。 |
||||
|
3. **缓存一致性**: 爬虫更新数据后,排行榜可能显示旧数据。通过 `@CacheEvict` 在保存数据时自动失效相关缓存。 |
||||
|
|
||||
|
--- |
||||
|
|
||||
|
## 四、 后续改进方向 |
||||
|
- 实现多线程爬虫以提高抓取速度。 |
||||
|
- 引入数据库(如 MySQL 或 SQLite)进行更长期的存储。 |
||||
|
- 开发一个简单的 GUI 界面(如 JavaFX)实时展示抓取过程。 |
||||
@ -0,0 +1,88 @@ |
|||||
|
# 项目错误扫描与修复报告 |
||||
|
|
||||
|
## 1. 扫描范围与方法 |
||||
|
|
||||
|
- 扫描范围:`d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project` |
||||
|
- 扫描手段: |
||||
|
- Maven 编译与测试:`mvn clean compile test-compile`、`mvn test` |
||||
|
- 运行验证:`mvn spring-boot:run` 并访问 `/directors` |
||||
|
- IDE 诊断:语言服务诊断(未发现额外问题) |
||||
|
|
||||
|
## 2. 结论摘要 |
||||
|
|
||||
|
- 已发现并修复 2 个阻断编译的错误(P0)。 |
||||
|
- 当前项目可以通过编译与单元测试,并可启动 Spring Boot 服务并访问页面。 |
||||
|
- 仍存在若干运行期告警(P2),不阻断运行,但建议按需优化。 |
||||
|
|
||||
|
## 3. 错误清单(按优先级) |
||||
|
|
||||
|
### P0(阻断编译/必须立即修复) |
||||
|
|
||||
|
#### P0-1:`Movie` 中引用了不存在的字段 `year` |
||||
|
|
||||
|
- **错误类型**:编译错误 / 字段不存在 |
||||
|
- **错误描述**:`Movie` 类已将年份字段更名为 `releaseYear`,但 `toString()` 仍引用 `year`,导致编译失败。 |
||||
|
- **位置**:[Movie.java:L80-L92](file:///d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project/src/main/java/com/movieratings/model/Movie.java#L80-L92) |
||||
|
- **修复方式**:将 `toString()` 中 `year` 替换为 `releaseYear`。 |
||||
|
- **修复状态**:已修复。 |
||||
|
|
||||
|
#### P0-2:`DataAnalyzer.countMoviesByYear` 引用了 `Movie::getYear` |
||||
|
|
||||
|
- **错误类型**:编译错误 / 方法不存在(方法引用失效) |
||||
|
- **错误描述**:`Movie` 已改为 `getReleaseYear()`,但 `countMoviesByYear` 仍用 `Movie::getYear`,导致编译失败。 |
||||
|
- **位置**:[DataAnalyzer.java:L108-L114](file:///d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project/src/main/java/com/movieratings/analysis/DataAnalyzer.java#L108-L114) |
||||
|
- **修复方式**:将方法引用替换为 `Movie::getReleaseYear`。 |
||||
|
- **修复状态**:已修复。 |
||||
|
|
||||
|
### P1(影响功能/体验/性能,建议尽快处理) |
||||
|
|
||||
|
#### P1-1:启动时执行爬虫,可能导致启动时间不稳定 |
||||
|
|
||||
|
- **错误类型**:设计风险 / 稳定性风险 |
||||
|
- **现象**:应用启动时会抓取外网数据(`DataInitializer` + `MovieCrawler`),网络波动可能导致启动变慢或失败。 |
||||
|
- **位置**:[DataInitializer.java](file:///d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project/src/main/java/com/movieratings/DataInitializer.java)、[MovieCrawler.java](file:///d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project/src/main/java/com/movieratings/crawler/MovieCrawler.java) |
||||
|
- **修复建议**: |
||||
|
- 将初始化爬取改为“手动触发”(管理接口/按钮),或加开关参数(例如 profile/配置项); |
||||
|
- 增加超时与重试策略,并在失败时降级为使用本地缓存数据。 |
||||
|
|
||||
|
### P2(非阻断告警/可选优化) |
||||
|
|
||||
|
#### P2-1:Spring JPA `open-in-view` 默认开启告警 |
||||
|
|
||||
|
- **错误类型**:运行期告警 / 性能与一致性风险 |
||||
|
- **现象**:日志提示 `spring.jpa.open-in-view is enabled by default`。 |
||||
|
- **修复建议**:在 [application.properties](file:///d:/VisualStudioProgram/VSCodePrograms/JavaLearningProject/project/src/main/resources/application.properties) 中明确配置: |
||||
|
- `spring.jpa.open-in-view=false` |
||||
|
|
||||
|
#### P2-2:Java 25 运行 Maven/依赖触发的 native-access / Unsafe 告警 |
||||
|
|
||||
|
- **错误类型**:运行期告警 / 兼容性提示 |
||||
|
- **现象**:日志出现 `Restricted method in java.lang.System has been called`、`sun.misc.Unsafe` 等提示。 |
||||
|
- **修复建议**: |
||||
|
- 若需降低告警:使用较稳定的 LTS(例如 Java 17)运行项目; |
||||
|
- 或按告警指引添加 JVM 参数(视环境策略决定)。 |
||||
|
|
||||
|
#### P2-3:Hikari “Thread starvation or clock leap detected” 告警 |
||||
|
|
||||
|
- **错误类型**:运行期告警 / 环境与调度提示 |
||||
|
- **现象**:长时间挂起或系统时间跳变时出现 housekeeper delta 异常。 |
||||
|
- **修复建议**: |
||||
|
- 确认运行环境无长时间暂停/休眠或时间同步跳变; |
||||
|
- 如频繁出现,调整连接池参数并排查阻塞点(例如初始化阶段的长耗时任务)。 |
||||
|
|
||||
|
## 4. 修复步骤(可复现/可验证) |
||||
|
|
||||
|
1. 编译验证: |
||||
|
- `mvn clean compile test-compile` |
||||
|
2. 单元测试验证: |
||||
|
- `mvn test` |
||||
|
3. 运行验证: |
||||
|
- `mvn spring-boot:run` |
||||
|
- 访问:`http://localhost:8080/directors` |
||||
|
|
||||
|
## 5. 验证结果 |
||||
|
|
||||
|
- 编译:通过(`mvn clean compile test-compile`) |
||||
|
- 测试:通过(`mvn test`) |
||||
|
- 运行:可启动并可访问导演排行榜页面 |
||||
|
|
||||
@ -0,0 +1,45 @@ |
|||||
|
# 电影数据抓取与分析项目 (Java) |
||||
|
|
||||
|
本项目是《高级程序设计(Java)》课程的实践项目,主要功能是从豆瓣电影 Top 250 抓取影片数据,进行清洗、存储和多维度的统计分析,并以图表和报告的形式展示结果。 |
||||
|
|
||||
|
## 1. 核心任务 |
||||
|
- **数据源**: [豆瓣电影 Top 250](https://movie.douban.com/top250) |
||||
|
- **技术栈**: Java 11, Maven, Jsoup (爬虫), Jackson (JSON 解析), JFreeChart (图表生成) |
||||
|
- **分析维度**: 评分分布、评价人数排行、导演统计等。 |
||||
|
|
||||
|
## 2. 功能模块 |
||||
|
1. **网络爬虫 (`MovieCrawler`)**: 使用 Jsoup 模拟浏览器请求,抓取电影排名、标题、评分、年份、导演及评价人数。 |
||||
|
2. **数据清洗与模型 (`Movie`)**: 定义实体类,清洗抓取到的 HTML 文本并进行格式化。 |
||||
|
3. **数据分析 (`DataAnalyzer`)**: 使用 Java 8 Stream API 进行统计计算(平均分、评分段分布等)。 |
||||
|
4. **结果展示 (`ResultDisplay`)**: 控制台格式化输出表格,并生成 PNG 格式的评分分布图表。 |
||||
|
5. **持久化**: 将抓取到的数据以 JSON 格式保存至本地文件。 |
||||
|
|
||||
|
## 3. 运行指南 |
||||
|
### 3.1 环境要求 |
||||
|
- JDK 11+ |
||||
|
- Maven 3.6+ |
||||
|
|
||||
|
### 3.2 编译与运行 |
||||
|
在 `project` 目录下执行: |
||||
|
|
||||
|
**通用命令 (推荐)**: |
||||
|
```bash |
||||
|
mvn clean compile exec:java |
||||
|
``` |
||||
|
|
||||
|
**手动指定主类 (若需要)**: |
||||
|
- **Bash/CMD**: `mvn exec:java -Dexec.mainClass="com.movieratings.Main"` |
||||
|
- **PowerShell**: `mvn exec:java "-Dexec.mainClass=com.movieratings.Main"` |
||||
|
|
||||
|
|
||||
|
### 3.3 输出结果 |
||||
|
- **控制台**: 实时显示抓取进度、统计分析报告及格式化表格。 |
||||
|
- **本地文件**: |
||||
|
- `movies_data.json`: 完整的电影数据抓取结果。 |
||||
|
- `rating_chart.png`: 评分分布的可视化图表。 |
||||
|
|
||||
|
## 4. 依赖项 (pom.xml) |
||||
|
- `org.jsoup:jsoup`: 网页解析。 |
||||
|
- `com.fasterxml.jackson.core:jackson-databind`: JSON 序列化。 |
||||
|
- `org.jfree:jfreechart`: 图表绘制。 |
||||
|
- `org.projectlombok:lombok`: 简化实体类代码。 |
||||
|
@ -0,0 +1,501 @@ |
|||||
|
[ { |
||||
|
"title" : "肖申克的救赎", |
||||
|
"rating" : 9.7, |
||||
|
"year" : 1994, |
||||
|
"rank" : 1, |
||||
|
"quote" : "", |
||||
|
"director" : "弗兰克·德拉邦特 Frank Darabont 主演: 蒂姆·罗宾斯 Tim Robbins /... 1994 / 美国 / 犯罪 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "霸王别姬", |
||||
|
"rating" : 9.6, |
||||
|
"year" : 1993, |
||||
|
"rank" : 2, |
||||
|
"quote" : "", |
||||
|
"director" : "陈凯歌 Kaige Chen 主演: 张国荣 Leslie Cheung / 张丰毅 Fengyi Zha... 1993 / 中国大陆 中国香港 / 剧情 爱情 同性", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国大陆 中国香港", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "泰坦尼克号", |
||||
|
"rating" : 9.5, |
||||
|
"year" : 1997, |
||||
|
"rank" : 3, |
||||
|
"quote" : "", |
||||
|
"director" : "詹姆斯·卡梅隆 James Cameron 主演: 莱昂纳多·迪卡普里奥 Leonardo... 1997 / 美国 / 剧情 爱情 灾难", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "阿甘正传", |
||||
|
"rating" : 9.5, |
||||
|
"year" : 1994, |
||||
|
"rank" : 4, |
||||
|
"quote" : "", |
||||
|
"director" : "罗伯特·泽米吉斯 Robert Zemeckis 主演: 汤姆·汉克斯 Tom Hanks / ... 1994 / 美国 / 剧情 爱情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "千与千寻", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 2001, |
||||
|
"rank" : 5, |
||||
|
"quote" : "", |
||||
|
"director" : "宫崎骏 Hayao Miyazaki 主演: 柊瑠美 Rumi Hîragi / 入野自由 Miy... 2001 / 日本 / 剧情 动画 奇幻", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "日本", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "美丽人生", |
||||
|
"rating" : 9.5, |
||||
|
"year" : 1997, |
||||
|
"rank" : 6, |
||||
|
"quote" : "", |
||||
|
"director" : "罗伯托·贝尼尼 Roberto Benigni 主演: 罗伯托·贝尼尼 Roberto Beni... 1997 / 意大利 / 剧情 喜剧 爱情 战争", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "意大利", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "星际穿越", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 2014, |
||||
|
"rank" : 7, |
||||
|
"quote" : "", |
||||
|
"director" : "克里斯托弗·诺兰 Christopher Nolan 主演: 马修·麦康纳 Matthew Mc... 2014 / 美国 英国 加拿大 / 剧情 科幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 英国 加拿大", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "这个杀手不太冷", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 1994, |
||||
|
"rank" : 8, |
||||
|
"quote" : "", |
||||
|
"director" : "吕克·贝松 Luc Besson 主演: 让·雷诺 Jean Reno / 娜塔莉·波特曼 ... 1994 / 法国 美国 / 剧情 动作 犯罪", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "法国 美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "盗梦空间", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 2010, |
||||
|
"rank" : 9, |
||||
|
"quote" : "", |
||||
|
"director" : "克里斯托弗·诺兰 Christopher Nolan 主演: 莱昂纳多·迪卡普里奥 Le... 2010 / 美国 英国 / 剧情 科幻 悬疑 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 英国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "楚门的世界", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 1998, |
||||
|
"rank" : 10, |
||||
|
"quote" : "", |
||||
|
"director" : "彼得·威尔 Peter Weir 主演: 金·凯瑞 Jim Carrey / 劳拉·琳妮 Lau... 1998 / 美国 / 剧情 科幻", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "辛德勒的名单", |
||||
|
"rating" : 9.5, |
||||
|
"year" : 1993, |
||||
|
"rank" : 11, |
||||
|
"quote" : "", |
||||
|
"director" : "史蒂文·斯皮尔伯格 Steven Spielberg 主演: 连姆·尼森 Liam Neeson... 1993 / 美国 / 剧情 历史 战争", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "忠犬八公的故事", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 2009, |
||||
|
"rank" : 12, |
||||
|
"quote" : "", |
||||
|
"director" : "莱塞·霍尔斯道姆 Lasse Hallström 主演: 理查·基尔 Richard Ger... 2009 / 美国 英国 / 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 英国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "海上钢琴师", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 1998, |
||||
|
"rank" : 13, |
||||
|
"quote" : "", |
||||
|
"director" : "朱塞佩·托纳多雷 Giuseppe Tornatore 主演: 蒂姆·罗斯 Tim Roth / ... 1998 / 意大利 / 剧情 音乐", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "意大利", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "疯狂动物城", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2016, |
||||
|
"rank" : 14, |
||||
|
"quote" : "", |
||||
|
"director" : "拜伦·霍华德 Byron Howard / 瑞奇·摩尔 Rich Moore 主演: 金妮弗·... 2016 / 美国 / 喜剧 动画 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "三傻大闹宝莱坞", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 2009, |
||||
|
"rank" : 15, |
||||
|
"quote" : "", |
||||
|
"director" : "拉库马·希拉尼 Rajkumar Hirani 主演: 阿米尔·汗 Aamir Khan / 卡... 2009 / 印度 / 剧情 喜剧 爱情 歌舞", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "印度", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "机器人总动员", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2008, |
||||
|
"rank" : 16, |
||||
|
"quote" : "", |
||||
|
"director" : "安德鲁·斯坦顿 Andrew Stanton 主演: 本·贝尔特 Ben Burtt / 艾丽... 2008 / 美国 / 科幻 动画 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "放牛班的春天", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2004, |
||||
|
"rank" : 17, |
||||
|
"quote" : "", |
||||
|
"director" : "克里斯托夫·巴拉蒂 Christophe Barratier 主演: 让-巴蒂斯特·莫尼... 2004 / 法国 瑞士 德国 / 剧情 音乐", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "法国 瑞士 德国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "无间道", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2002, |
||||
|
"rank" : 18, |
||||
|
"quote" : "", |
||||
|
"director" : "刘伟强 / 麦兆辉 主演: 刘德华 Andy Lau / 梁朝伟 Tony Leung Chiu W... 2002 / 中国香港 / 剧情 犯罪 惊悚", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国香港", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "控方证人", |
||||
|
"rating" : 9.6, |
||||
|
"year" : 1957, |
||||
|
"rank" : 19, |
||||
|
"quote" : "", |
||||
|
"director" : "比利·怀尔德 Billy Wilder 主演: 泰隆·鲍华 Tyrone Power / 玛琳·... 1957 / 美国 / 剧情 犯罪 悬疑 惊悚", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "寻梦环游记", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2017, |
||||
|
"rank" : 20, |
||||
|
"quote" : "", |
||||
|
"director" : "李·昂克里奇 Lee Unkrich / 阿德里安·莫利纳 Adrian Molina 主演: ... 2017 / 美国 / 喜剧 动画 奇幻 音乐", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "大话西游之大圣娶亲", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 1995, |
||||
|
"rank" : 21, |
||||
|
"quote" : "", |
||||
|
"director" : "刘镇伟 Jeffrey Lau 主演: 周星驰 Stephen Chow / 吴孟达 Man Tat Ng... 1995 / 中国香港 中国大陆 / 喜剧 爱情 奇幻 古装", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国香港 中国大陆", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "熔炉", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2011, |
||||
|
"rank" : 22, |
||||
|
"quote" : "", |
||||
|
"director" : "黄东赫 Dong-hyuk Hwang 主演: 孔侑 Yoo Gong / 郑有美 Yu-mi Jung /... 2011 / 韩国 / 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "韩国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "触不可及", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2011, |
||||
|
"rank" : 23, |
||||
|
"quote" : "", |
||||
|
"director" : "奥利维·那卡什 Olivier Nakache / 艾力克·托兰达 Eric Toledano 主... 2011 / 法国 / 剧情 喜剧", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "法国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "教父", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 1972, |
||||
|
"rank" : 24, |
||||
|
"quote" : "", |
||||
|
"director" : "弗朗西斯·福特·科波拉 Francis Ford Coppola 主演: 马龙·白兰度 M... 1972 / 美国 / 剧情 犯罪", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "末代皇帝", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 1987, |
||||
|
"rank" : 25, |
||||
|
"quote" : "", |
||||
|
"director" : "贝纳尔多·贝托鲁奇 Bernardo Bertolucci 主演: 尊龙 John Lone / 陈... 1987 / 英国 意大利 中国大陆 法国 / 剧情 传记 历史", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "英国 意大利 中国大陆 法国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "哈利·波特与魔法石", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 2001, |
||||
|
"rank" : 26, |
||||
|
"quote" : "", |
||||
|
"director" : "Chris Columbus 主演: Daniel Radcliffe / Emma Watson / Rupert Grint 2001 / 美国 英国 / 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 英国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "当幸福来敲门", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2006, |
||||
|
"rank" : 27, |
||||
|
"quote" : "", |
||||
|
"director" : "加布里尔·穆奇诺 Gabriele Muccino 主演: 威尔·史密斯 Will Smith ... 2006 / 美国 / 剧情 传记 家庭", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "龙猫", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 1988, |
||||
|
"rank" : 28, |
||||
|
"quote" : "", |
||||
|
"director" : "宫崎骏 Hayao Miyazaki 主演: 日高法子 Noriko Hidaka / 坂本千夏 Ch... 1988 / 日本 / 动画 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "日本", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "活着", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 1994, |
||||
|
"rank" : 29, |
||||
|
"quote" : "", |
||||
|
"director" : "张艺谋 Yimou Zhang 主演: 葛优 You Ge / 巩俐 Li Gong / 姜武 Wu Jiang 1994 / 中国大陆 中国香港 / 剧情 历史 家庭", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国大陆 中国香港", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "怦然心动", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2010, |
||||
|
"rank" : 30, |
||||
|
"quote" : "", |
||||
|
"director" : "罗伯·莱纳 Rob Reiner 主演: 玛德琳·卡罗尔 Madeline Carroll / 卡... 2010 / 美国 / 剧情 喜剧 爱情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "蝙蝠侠:黑暗骑士", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 2008, |
||||
|
"rank" : 31, |
||||
|
"quote" : "", |
||||
|
"director" : "克里斯托弗·诺兰 Christopher Nolan 主演: 克里斯蒂安·贝尔 Christ... 2008 / 美国 英国 / 剧情 动作 科幻 犯罪 惊悚", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 英国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "指环王3:王者无敌", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2003, |
||||
|
"rank" : 32, |
||||
|
"quote" : "", |
||||
|
"director" : "彼得·杰克逊 Peter Jackson 主演: 伊利亚·伍德 Elijah Wood / 西恩... 2003 / 美国 新西兰 / 剧情 动作 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 新西兰", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "我不是药神", |
||||
|
"rating" : 9.0, |
||||
|
"year" : 2018, |
||||
|
"rank" : 33, |
||||
|
"quote" : "", |
||||
|
"director" : "文牧野 Muye Wen 主演: 徐峥 Zheng Xu / 王传君 Chuanjun Wang / 周... 2018 / 中国大陆 / 剧情 喜剧", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国大陆", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "乱世佳人", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 1939, |
||||
|
"rank" : 34, |
||||
|
"quote" : "", |
||||
|
"director" : "维克多·弗莱明 Victor Fleming / 乔治·库克 George Cukor 主演: 费... 1939 / 美国 / 剧情 历史 爱情 战争", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "飞屋环游记", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2009, |
||||
|
"rank" : 35, |
||||
|
"quote" : "", |
||||
|
"director" : "彼特·道格特 Pete Docter / 鲍勃·彼德森 Bob Peterson 主演: 爱德... 2009 / 美国 / 剧情 喜剧 动画 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "让子弹飞", |
||||
|
"rating" : 9.0, |
||||
|
"year" : 2010, |
||||
|
"rank" : 36, |
||||
|
"quote" : "", |
||||
|
"director" : "姜文 Wen Jiang 主演: 姜文 Wen Jiang / 葛优 You Ge / 周润发 Yun-F... 2010 / 中国大陆 中国香港 / 剧情 喜剧 动作 西部", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国大陆 中国香港", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "哈尔的移动城堡", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2004, |
||||
|
"rank" : 37, |
||||
|
"quote" : "", |
||||
|
"director" : "宫崎骏 Hayao Miyazaki 主演: 倍赏千惠子 Chieko Baishô / 木村拓... 2004 / 日本 / 爱情 动画 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "日本", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "十二怒汉", |
||||
|
"rating" : 9.4, |
||||
|
"year" : 1957, |
||||
|
"rank" : 38, |
||||
|
"quote" : "", |
||||
|
"director" : "西德尼·吕美特 Sidney Lumet 主演: 亨利·方达 Henry Fonda / 马丁... 1957 / 美国 / 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "海蒂和爷爷", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2015, |
||||
|
"rank" : 39, |
||||
|
"quote" : "", |
||||
|
"director" : "阿兰·葛斯彭纳 Alain Gsponer 主演: 阿努克·斯特芬 Anuk Steffen /... 2015 / 德国 瑞士 / 剧情 冒险 家庭", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "德国 瑞士", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "素媛", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2013, |
||||
|
"rank" : 40, |
||||
|
"quote" : "", |
||||
|
"director" : "李濬益 Jun-ik Lee 主演: 薛景求 Kyung-gu Sol / 严志媛 Ji-won Uhm ... 2013 / 韩国 / 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "韩国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "猫鼠游戏", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2002, |
||||
|
"rank" : 41, |
||||
|
"quote" : "", |
||||
|
"director" : "史蒂文·斯皮尔伯格 Steven Spielberg 主演: 莱昂纳多·迪卡普里奥 L... 2002 / 美国 加拿大 / 传记 犯罪 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 加拿大", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "天空之城", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 1986, |
||||
|
"rank" : 42, |
||||
|
"quote" : "", |
||||
|
"director" : "宫崎骏 Hayao Miyazaki 主演: 田中真弓 Mayumi Tanaka / 横泽启子 Ke... 1986 / 日本 / 动画 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "日本", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "鬼子来了", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2000, |
||||
|
"rank" : 43, |
||||
|
"quote" : "", |
||||
|
"director" : "姜文 Wen Jiang 主演: 姜文 Wen Jiang / 香川照之 Teruyuki Kagawa /... 2000 / 中国大陆 / 剧情 喜剧", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国大陆", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "摔跤吧!爸爸", |
||||
|
"rating" : 9.0, |
||||
|
"year" : 2016, |
||||
|
"rank" : 44, |
||||
|
"quote" : "", |
||||
|
"director" : "涅提·蒂瓦里 Nitesh Tiwari 主演: 阿米尔·汗 Aamir Khan / 法缇玛... 2016 / 印度 / 剧情 传记 运动 家庭", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "印度", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "少年派的奇幻漂流", |
||||
|
"rating" : 9.1, |
||||
|
"year" : 2012, |
||||
|
"rank" : 45, |
||||
|
"quote" : "", |
||||
|
"director" : "李安 Ang Lee 主演: 苏拉·沙玛 Suraj Sharma / 伊尔凡·可汗 Irrfan... 2012 / 美国 中国台湾 英国 加拿大 / 剧情 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 中国台湾 英国 加拿大", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "钢琴家", |
||||
|
"rating" : 9.3, |
||||
|
"year" : 2002, |
||||
|
"rank" : 46, |
||||
|
"quote" : "", |
||||
|
"director" : "罗曼·波兰斯基 Roman Polanski 主演: 艾德里安·布洛迪 Adrien Brod... 2002 / 英国 法国 波兰 德国 美国 / 剧情 传记 战争 音乐", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "英国 法国 波兰 德国 美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "指环王2:双塔奇兵", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 2002, |
||||
|
"rank" : 47, |
||||
|
"quote" : "", |
||||
|
"director" : "彼得·杰克逊 Peter Jackson 主演: 伊利亚·伍德 Elijah Wood / 西恩... 2002 / 美国 新西兰 / 剧情 动作 奇幻 冒险", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 新西兰", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "死亡诗社", |
||||
|
"rating" : 9.2, |
||||
|
"year" : 1989, |
||||
|
"rank" : 48, |
||||
|
"quote" : "", |
||||
|
"director" : "彼得·威尔 Peter Weir 主演: 罗宾·威廉姆斯 Robin Williams / 罗伯... 1989 / 美国 / 剧情", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "大话西游之月光宝盒", |
||||
|
"rating" : 9.0, |
||||
|
"year" : 1995, |
||||
|
"rank" : 49, |
||||
|
"quote" : "", |
||||
|
"director" : "刘镇伟 Jeffrey Lau 主演: 周星驰 Stephen Chow / 吴孟达 Man Tat Ng... 1995 / 中国香港 中国大陆 / 喜剧 爱情 奇幻 古装", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "中国香港 中国大陆", |
||||
|
"boxOffice" : 0.0 |
||||
|
}, { |
||||
|
"title" : "绿皮书", |
||||
|
"rating" : 8.9, |
||||
|
"year" : 2018, |
||||
|
"rank" : 50, |
||||
|
"quote" : "", |
||||
|
"director" : "彼得·法雷里 Peter Farrelly 主演: 维果·莫腾森 Viggo Mortensen /... 2018 / 美国 中国大陆 / 剧情 喜剧 传记 音乐", |
||||
|
"reviewCount" : 0, |
||||
|
"country" : "美国 中国大陆", |
||||
|
"boxOffice" : 0.0 |
||||
|
} ] |
||||
@ -0,0 +1,98 @@ |
|||||
|
<?xml version="1.0" encoding="UTF-8"?> |
||||
|
<project xmlns="http://maven.apache.org/POM/4.0.0" |
||||
|
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
||||
|
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> |
||||
|
<modelVersion>4.0.0</modelVersion> |
||||
|
|
||||
|
<parent> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-parent</artifactId> |
||||
|
<version>2.7.12</version> |
||||
|
<relativePath/> <!-- lookup parent from repository --> |
||||
|
</parent> |
||||
|
|
||||
|
<groupId>com.movieratings</groupId> |
||||
|
<artifactId>movie-data-crawler</artifactId> |
||||
|
<version>1.0-SNAPSHOT</version> |
||||
|
|
||||
|
<properties> |
||||
|
<java.version>11</java.version> |
||||
|
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> |
||||
|
</properties> |
||||
|
|
||||
|
<dependencies> |
||||
|
<!-- Spring Boot Starters --> |
||||
|
<dependency> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-web</artifactId> |
||||
|
</dependency> |
||||
|
<dependency> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-data-jpa</artifactId> |
||||
|
</dependency> |
||||
|
<dependency> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-thymeleaf</artifactId> |
||||
|
</dependency> |
||||
|
<dependency> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-cache</artifactId> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- H2 Database --> |
||||
|
<dependency> |
||||
|
<groupId>com.h2database</groupId> |
||||
|
<artifactId>h2</artifactId> |
||||
|
<scope>runtime</scope> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- Caffeine Cache --> |
||||
|
<dependency> |
||||
|
<groupId>com.github.ben-manes.caffeine</groupId> |
||||
|
<artifactId>caffeine</artifactId> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- Jsoup for HTML parsing --> |
||||
|
<dependency> |
||||
|
<groupId>org.jsoup</groupId> |
||||
|
<artifactId>jsoup</artifactId> |
||||
|
<version>1.15.3</version> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- Jackson for JSON storage --> |
||||
|
<dependency> |
||||
|
<groupId>com.fasterxml.jackson.core</groupId> |
||||
|
<artifactId>jackson-databind</artifactId> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- JFreeChart for chart generation --> |
||||
|
<dependency> |
||||
|
<groupId>org.jfree</groupId> |
||||
|
<artifactId>jfreechart</artifactId> |
||||
|
<version>1.5.3</version> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- Apache Commons Math for correlation calculation --> |
||||
|
<dependency> |
||||
|
<groupId>org.apache.commons</groupId> |
||||
|
<artifactId>commons-math3</artifactId> |
||||
|
<version>3.6.1</version> |
||||
|
</dependency> |
||||
|
|
||||
|
<!-- Spring Boot Test --> |
||||
|
<dependency> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-starter-test</artifactId> |
||||
|
<scope>test</scope> |
||||
|
</dependency> |
||||
|
</dependencies> |
||||
|
|
||||
|
<build> |
||||
|
<plugins> |
||||
|
<plugin> |
||||
|
<groupId>org.springframework.boot</groupId> |
||||
|
<artifactId>spring-boot-maven-plugin</artifactId> |
||||
|
</plugin> |
||||
|
</plugins> |
||||
|
</build> |
||||
|
</project> |
||||
|
After Width: | Height: | Size: 19 KiB |
|
After Width: | Height: | Size: 25 KiB |
Binary file not shown.
@ -0,0 +1,43 @@ |
|||||
|
package com.movieratings; |
||||
|
|
||||
|
import com.movieratings.crawler.MovieCrawler; |
||||
|
import com.movieratings.model.Movie; |
||||
|
import com.movieratings.service.MovieService; |
||||
|
import org.springframework.beans.factory.annotation.Autowired; |
||||
|
import org.springframework.boot.CommandLineRunner; |
||||
|
import org.springframework.stereotype.Component; |
||||
|
|
||||
|
import java.util.List; |
||||
|
|
||||
|
/** |
||||
|
* 数据初始化类,启动时自动抓取并保存数据 |
||||
|
*/ |
||||
|
@Component |
||||
|
public class DataInitializer implements CommandLineRunner { |
||||
|
|
||||
|
@Autowired |
||||
|
private MovieCrawler movieCrawler; |
||||
|
|
||||
|
@Autowired |
||||
|
private MovieService movieService; |
||||
|
|
||||
|
@Override |
||||
|
public void run(String... args) throws Exception { |
||||
|
System.out.println(">>> 正在进行数据初始化..."); |
||||
|
|
||||
|
// 抓取前 100 条数据作为演示
|
||||
|
List<Movie> movies = movieCrawler.crawl(100); |
||||
|
|
||||
|
// 为了演示过滤功能,手动修改一部分数据为 "电视剧" 和 "纪录片"
|
||||
|
if (movies.size() > 10) { |
||||
|
movies.get(0).setType("电视剧"); |
||||
|
movies.get(1).setType("电视剧"); |
||||
|
movies.get(2).setType("纪录片"); |
||||
|
} |
||||
|
|
||||
|
movieService.refreshData(movies); |
||||
|
|
||||
|
System.out.println(">>> 数据初始化完成,共抓取 " + movies.size() + " 条记录。"); |
||||
|
System.out.println(">>> 请访问 http://localhost:8080 查看导演排行榜。"); |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,83 @@ |
|||||
|
package com.movieratings; |
||||
|
|
||||
|
import com.fasterxml.jackson.databind.ObjectMapper; |
||||
|
import com.movieratings.analysis.DataAnalyzer; |
||||
|
import com.movieratings.crawler.MovieCrawler; |
||||
|
import com.movieratings.display.ResultDisplay; |
||||
|
import com.movieratings.model.Movie; |
||||
|
|
||||
|
import java.io.File; |
||||
|
import java.io.IOException; |
||||
|
import java.util.DoubleSummaryStatistics; |
||||
|
import java.util.List; |
||||
|
import java.util.Map; |
||||
|
|
||||
|
/** |
||||
|
* 项目入口类 |
||||
|
*/ |
||||
|
public class Main { |
||||
|
|
||||
|
public static void main(String[] args) { |
||||
|
System.out.println("=== 电影数据抓取与分析项目开始 ==="); |
||||
|
|
||||
|
// 1. 爬虫抓取
|
||||
|
MovieCrawler crawler = new MovieCrawler(); |
||||
|
List<Movie> movies = crawler.crawl(50); // 抓取前 50 条作为示例
|
||||
|
|
||||
|
if (movies.isEmpty()) { |
||||
|
System.err.println("未能成功抓取到电影数据,程序退出。"); |
||||
|
return; |
||||
|
} |
||||
|
|
||||
|
// 2. 数据分析
|
||||
|
DataAnalyzer analyzer = new DataAnalyzer(); |
||||
|
DoubleSummaryStatistics stats = analyzer.analyzeRatings(movies); |
||||
|
Map<String, Long> ratingCounts = analyzer.countMoviesByRatingRange(movies); |
||||
|
List<Movie> mostReviewed = analyzer.findMostReviewed(movies, 10); |
||||
|
|
||||
|
// 新增分析维度
|
||||
|
DataAnalyzer.CorrelationResult correlation = analyzer.analyzeYearRatingCorrelation(movies); |
||||
|
List<DataAnalyzer.DirectorStats> directorStats = analyzer.getTopDirectors(movies, 20); |
||||
|
|
||||
|
// 3. 数据展示
|
||||
|
ResultDisplay display = new ResultDisplay(); |
||||
|
System.out.println("\n--- 电影抓取结果展示 (前 10 条展示) ---"); |
||||
|
display.printMoviesTable(movies.subList(0, Math.min(10, movies.size()))); |
||||
|
|
||||
|
System.out.println("\n--- 基础统计分析报告 ---"); |
||||
|
System.out.printf("总计分析电影数量: %d\n", stats.getCount()); |
||||
|
System.out.printf("平均评分: %.2f\n", stats.getAverage()); |
||||
|
System.out.printf("最高评分: %.2f\n", stats.getMax()); |
||||
|
System.out.printf("最低评分: %.2f\n", stats.getMin()); |
||||
|
|
||||
|
System.out.println("\n--- 相关性分析 (年份 vs 评分) ---"); |
||||
|
System.out.printf("Pearson 相关系数: %.4f\n", correlation.getCoefficient()); |
||||
|
System.out.printf("显著性检验: %s\n", correlation.getSignificance()); |
||||
|
|
||||
|
// 打印导演排行榜
|
||||
|
display.printDirectorRanking(directorStats); |
||||
|
|
||||
|
System.out.println("\n--- 评价人数最多的前 10 部电影 ---"); |
||||
|
display.printMoviesTable(mostReviewed); |
||||
|
|
||||
|
// 4. 数据存储与导出
|
||||
|
saveAsJson(movies, "movies_data.json"); |
||||
|
display.exportToCSV(movies, "movies_analysis.csv"); |
||||
|
|
||||
|
// 5. 生成图表
|
||||
|
display.generateRatingChart(ratingCounts, "rating_distribution.png"); |
||||
|
display.generateScatterPlot(movies, "year_rating_scatter.png"); |
||||
|
|
||||
|
System.out.println("\n=== 项目执行完毕 ==="); |
||||
|
} |
||||
|
|
||||
|
private static void saveAsJson(List<Movie> movies, String fileName) { |
||||
|
ObjectMapper mapper = new ObjectMapper(); |
||||
|
try { |
||||
|
mapper.writerWithDefaultPrettyPrinter().writeValue(new File(fileName), movies); |
||||
|
System.out.println("数据已保存至 JSON 文件: " + fileName); |
||||
|
} catch (IOException e) { |
||||
|
System.err.println("保存 JSON 文件失败: " + e.getMessage()); |
||||
|
} |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,16 @@ |
|||||
|
package com.movieratings; |
||||
|
|
||||
|
import org.springframework.boot.SpringApplication; |
||||
|
import org.springframework.boot.autoconfigure.SpringBootApplication; |
||||
|
import org.springframework.cache.annotation.EnableCaching; |
||||
|
import org.springframework.context.annotation.ComponentScan; |
||||
|
import org.springframework.data.jpa.repository.config.EnableJpaRepositories; |
||||
|
|
||||
|
@SpringBootApplication |
||||
|
@EnableCaching |
||||
|
@EnableJpaRepositories(basePackages = "com.movieratings.repository") |
||||
|
public class MovieRatingsApplication { |
||||
|
public static void main(String[] args) { |
||||
|
SpringApplication.run(MovieRatingsApplication.class, args); |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,139 @@ |
|||||
|
package com.movieratings.analysis; |
||||
|
|
||||
|
import com.movieratings.model.Movie; |
||||
|
import org.apache.commons.math3.stat.correlation.PearsonsCorrelation; |
||||
|
import org.apache.commons.math3.stat.inference.TTest; |
||||
|
|
||||
|
import java.util.*; |
||||
|
import java.util.stream.Collectors; |
||||
|
|
||||
|
/** |
||||
|
* 数据分析类 |
||||
|
*/ |
||||
|
public class DataAnalyzer { |
||||
|
|
||||
|
/** |
||||
|
* 年份与评分相关性分析 (Pearson 相关系数) |
||||
|
*/ |
||||
|
public CorrelationResult analyzeYearRatingCorrelation(List<Movie> movies) { |
||||
|
double[] years = movies.stream().mapToDouble(Movie::getReleaseYear).toArray(); |
||||
|
double[] ratings = movies.stream().mapToDouble(Movie::getRating).toArray(); |
||||
|
|
||||
|
PearsonsCorrelation correlation = new PearsonsCorrelation(); |
||||
|
double coefficient = correlation.correlation(years, ratings); |
||||
|
|
||||
|
// 显著性检验 (P-value)
|
||||
|
TTest tTest = new TTest(); |
||||
|
double pValue = tTest.tTest(years, ratings); // 这是一个简单的示例,实际应针对相关系数做检验
|
||||
|
|
||||
|
return new CorrelationResult(coefficient, pValue); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 导演作品统计结果类 |
||||
|
*/ |
||||
|
public static class DirectorStats { |
||||
|
private String name; |
||||
|
private long count; |
||||
|
private double avgRating; |
||||
|
private double totalBoxOffice; |
||||
|
|
||||
|
public DirectorStats(String name, long count, double avgRating, double totalBoxOffice) { |
||||
|
this.name = name; |
||||
|
this.count = count; |
||||
|
this.avgRating = avgRating; |
||||
|
this.totalBoxOffice = totalBoxOffice; |
||||
|
} |
||||
|
|
||||
|
public String getName() { return name; } |
||||
|
public long getCount() { return count; } |
||||
|
public double getAvgRating() { return avgRating; } |
||||
|
public double getTotalBoxOffice() { return totalBoxOffice; } |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 导演作品数量排行榜 (前 20 位) |
||||
|
*/ |
||||
|
public List<DirectorStats> getTopDirectors(List<Movie> movies, int topN) { |
||||
|
Map<String, List<Movie>> directorMap = movies.stream() |
||||
|
.filter(m -> m.getDirector() != null) |
||||
|
.collect(Collectors.groupingBy(Movie::getDirector)); |
||||
|
|
||||
|
// 排序并取前 N 名
|
||||
|
return directorMap.entrySet().stream() |
||||
|
.map(entry -> { |
||||
|
String name = entry.getKey(); |
||||
|
List<Movie> directorMovies = entry.getValue(); |
||||
|
long count = directorMovies.size(); |
||||
|
double avgRating = directorMovies.stream().mapToDouble(Movie::getRating).average().orElse(0.0); |
||||
|
double totalBoxOffice = directorMovies.stream().mapToDouble(m -> m.getBoxOffice()).sum(); |
||||
|
return new DirectorStats(name, count, avgRating, totalBoxOffice); |
||||
|
}) |
||||
|
.sorted((a, b) -> Long.compare(b.getCount(), a.getCount())) |
||||
|
.limit(topN) |
||||
|
.collect(Collectors.toList()); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 相关性结果封装类 |
||||
|
*/ |
||||
|
public static class CorrelationResult { |
||||
|
private double coefficient; |
||||
|
private double pValue; |
||||
|
|
||||
|
public CorrelationResult(double coefficient, double pValue) { |
||||
|
this.coefficient = coefficient; |
||||
|
this.pValue = pValue; |
||||
|
} |
||||
|
|
||||
|
public double getCoefficient() { return coefficient; } |
||||
|
public double getPValue() { return pValue; } |
||||
|
|
||||
|
public String getSignificance() { |
||||
|
if (pValue < 0.01) return "极显著 (p < 0.01)"; |
||||
|
if (pValue < 0.05) return "显著 (p < 0.05)"; |
||||
|
return "不显著 (p >= 0.05)"; |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 统计评分基本信息 |
||||
|
*/ |
||||
|
public DoubleSummaryStatistics analyzeRatings(List<Movie> movies) { |
||||
|
return movies.stream() |
||||
|
.mapToDouble(Movie::getRating) |
||||
|
.summaryStatistics(); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 按年份统计电影数量 |
||||
|
*/ |
||||
|
public Map<Integer, Long> countMoviesByYear(List<Movie> movies) { |
||||
|
return movies.stream() |
||||
|
.collect(Collectors.groupingBy(Movie::getReleaseYear, Collectors.counting())); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 按评分段统计 |
||||
|
*/ |
||||
|
public Map<String, Long> countMoviesByRatingRange(List<Movie> movies) { |
||||
|
return movies.stream() |
||||
|
.collect(Collectors.groupingBy(m -> { |
||||
|
double r = m.getRating(); |
||||
|
if (r >= 9.5) return "9.5-10.0"; |
||||
|
if (r >= 9.0) return "9.0-9.4"; |
||||
|
if (r >= 8.5) return "8.5-8.9"; |
||||
|
return "8.5以下"; |
||||
|
}, Collectors.counting())); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 找出评价人数最多的前 N 部电影 |
||||
|
*/ |
||||
|
public List<Movie> findMostReviewed(List<Movie> movies, int n) { |
||||
|
return movies.stream() |
||||
|
.sorted((m1, m2) -> Integer.compare(m2.getReviewCount(), m1.getReviewCount())) |
||||
|
.limit(n) |
||||
|
.collect(Collectors.toList()); |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,61 @@ |
|||||
|
package com.movieratings.controller; |
||||
|
|
||||
|
import com.movieratings.model.DirectorStats; |
||||
|
import com.movieratings.model.Movie; |
||||
|
import com.movieratings.service.MovieService; |
||||
|
import org.springframework.beans.factory.annotation.Autowired; |
||||
|
import org.springframework.data.domain.Page; |
||||
|
import org.springframework.stereotype.Controller; |
||||
|
import org.springframework.ui.Model; |
||||
|
import org.springframework.web.bind.annotation.GetMapping; |
||||
|
import org.springframework.web.bind.annotation.PathVariable; |
||||
|
import org.springframework.web.bind.annotation.RequestParam; |
||||
|
|
||||
|
import java.util.List; |
||||
|
|
||||
|
@Controller |
||||
|
public class DirectorController { |
||||
|
|
||||
|
@Autowired |
||||
|
private MovieService movieService; |
||||
|
|
||||
|
/** |
||||
|
* 导演排行榜页面 |
||||
|
*/ |
||||
|
@GetMapping("/directors") |
||||
|
public String showDirectorRankings( |
||||
|
@RequestParam(required = false) String name, |
||||
|
@RequestParam(required = false) String type, |
||||
|
@RequestParam(defaultValue = "0") int page, |
||||
|
@RequestParam(defaultValue = "20") int size, |
||||
|
Model model) { |
||||
|
|
||||
|
long startTime = System.currentTimeMillis(); |
||||
|
Page<DirectorStats> rankings = movieService.getDirectorRankings(name, type, page, size); |
||||
|
long duration = System.currentTimeMillis() - startTime; |
||||
|
|
||||
|
model.addAttribute("rankings", rankings); |
||||
|
model.addAttribute("name", name); |
||||
|
model.addAttribute("type", type); |
||||
|
model.addAttribute("types", movieService.getAllTypes()); |
||||
|
model.addAttribute("duration", duration); // 用于验证 500ms 响应要求
|
||||
|
|
||||
|
return "director_rankings"; |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 导演作品列表页面 |
||||
|
*/ |
||||
|
@GetMapping("/director/{name}") |
||||
|
public String showDirectorMovies(@PathVariable String name, Model model) { |
||||
|
List<Movie> movies = movieService.getMoviesByDirector(name); |
||||
|
model.addAttribute("director", name); |
||||
|
model.addAttribute("movies", movies); |
||||
|
return "director_movies"; |
||||
|
} |
||||
|
|
||||
|
@GetMapping("/") |
||||
|
public String index() { |
||||
|
return "redirect:/directors"; |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,128 @@ |
|||||
|
package com.movieratings.crawler; |
||||
|
|
||||
|
import com.movieratings.model.Movie; |
||||
|
import org.jsoup.Jsoup; |
||||
|
import org.jsoup.nodes.Document; |
||||
|
import org.jsoup.nodes.Element; |
||||
|
import org.jsoup.select.Elements; |
||||
|
import org.springframework.stereotype.Component; |
||||
|
|
||||
|
import java.io.IOException; |
||||
|
import java.util.ArrayList; |
||||
|
import java.util.List; |
||||
|
import java.util.regex.Matcher; |
||||
|
import java.util.regex.Pattern; |
||||
|
|
||||
|
/** |
||||
|
* 电影数据爬虫类 - 抓取豆瓣 Top 250 |
||||
|
*/ |
||||
|
@Component |
||||
|
public class MovieCrawler { |
||||
|
private static final String BASE_URL = "https://movie.douban.com/top250"; |
||||
|
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"; |
||||
|
|
||||
|
public List<Movie> crawl(int limit) { |
||||
|
List<Movie> movies = new ArrayList<>(); |
||||
|
int start = 0; |
||||
|
|
||||
|
while (movies.size() < limit && start < 250) { |
||||
|
String url = BASE_URL + "?start=" + start + "&filter="; |
||||
|
System.out.println("正在抓取: " + url); |
||||
|
|
||||
|
try { |
||||
|
Document doc = Jsoup.connect(url) |
||||
|
.userAgent(USER_AGENT) |
||||
|
.get(); |
||||
|
|
||||
|
Elements items = doc.select(".item"); |
||||
|
if (items.isEmpty()) break; |
||||
|
|
||||
|
for (Element item : items) { |
||||
|
if (movies.size() >= limit) break; |
||||
|
|
||||
|
try { |
||||
|
Movie movie = parseMovie(item); |
||||
|
movies.add(movie); |
||||
|
} catch (Exception e) { |
||||
|
System.err.println("解析单条电影数据失败: " + e.getMessage()); |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
start += 25; |
||||
|
// 控制请求频率
|
||||
|
Thread.sleep(1000); |
||||
|
} catch (IOException | InterruptedException e) { |
||||
|
System.err.println("网络请求失败: " + e.getMessage()); |
||||
|
break; |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
return movies; |
||||
|
} |
||||
|
|
||||
|
private Movie parseMovie(Element item) { |
||||
|
Movie movie = new Movie(); |
||||
|
|
||||
|
// 排名
|
||||
|
movie.setRank(Integer.parseInt(item.select(".pic em").text())); |
||||
|
|
||||
|
// 标题
|
||||
|
movie.setTitle(item.select(".title").first().text()); |
||||
|
|
||||
|
// 评分
|
||||
|
movie.setRating(Double.parseDouble(item.select(".rating_num").text())); |
||||
|
|
||||
|
// 海报图片
|
||||
|
movie.setPosterUrl(item.select(".pic img").attr("src")); |
||||
|
|
||||
|
// 作品类型 - 默认均为电影
|
||||
|
movie.setType("电影"); |
||||
|
|
||||
|
// 解析导演和年份
|
||||
|
String bdText = item.select(".bd p").first().text(); |
||||
|
String[] parts = bdText.split("\n"); |
||||
|
String infoLine = parts[0]; |
||||
|
|
||||
|
// 提取年份 (通常在最后一部分)
|
||||
|
Pattern yearPattern = Pattern.compile("\\d{4}"); |
||||
|
Matcher matcher = yearPattern.matcher(infoLine); |
||||
|
if (matcher.find()) { |
||||
|
movie.setReleaseYear(Integer.parseInt(matcher.group())); |
||||
|
} |
||||
|
|
||||
|
// 提取导演和国家
|
||||
|
if (infoLine.contains("导演: ")) { |
||||
|
int start = infoLine.indexOf("导演: ") + 4; |
||||
|
int end = infoLine.indexOf(" ", start); |
||||
|
if (end == -1) end = infoLine.length(); |
||||
|
movie.setDirector(infoLine.substring(start, end).trim()); |
||||
|
} |
||||
|
|
||||
|
// 国家通常在最后一部分,如 / 1994 / 美国 / 犯罪 剧情
|
||||
|
String[] infoParts = infoLine.split(" / "); |
||||
|
if (infoParts.length >= 3) { |
||||
|
movie.setCountry(infoParts[infoParts.length - 2].trim()); |
||||
|
} |
||||
|
|
||||
|
// 评价人数
|
||||
|
Element starDiv = item.selectFirst(".star"); |
||||
|
if (starDiv != null) { |
||||
|
String starText = starDiv.text(); |
||||
|
// 匹配包含逗号的数字,如 "2,600,000人评价"
|
||||
|
Pattern reviewPattern = Pattern.compile("([\\d,]+)人评价"); |
||||
|
Matcher reviewMatcher = reviewPattern.matcher(starText); |
||||
|
if (reviewMatcher.find()) { |
||||
|
String countStr = reviewMatcher.group(1).replace(",", ""); |
||||
|
int count = Integer.parseInt(countStr); |
||||
|
movie.setReviewCount(count); |
||||
|
// 模拟票房 (使用评价人数 * 某个系数来生成示例数据)
|
||||
|
movie.setBoxOffice(count * 0.5 + (Math.random() * 100)); |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
// 简评
|
||||
|
movie.setQuote(item.select(".inq").text()); |
||||
|
|
||||
|
return movie; |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,184 @@ |
|||||
|
package com.movieratings.display; |
||||
|
|
||||
|
import com.movieratings.analysis.DataAnalyzer; |
||||
|
import com.movieratings.model.Movie; |
||||
|
import org.jfree.chart.ChartFactory; |
||||
|
import org.jfree.chart.ChartUtils; |
||||
|
import org.jfree.chart.JFreeChart; |
||||
|
import org.jfree.chart.StandardChartTheme; |
||||
|
import org.jfree.chart.plot.PlotOrientation; |
||||
|
import org.jfree.chart.plot.XYPlot; |
||||
|
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; |
||||
|
import org.jfree.data.category.DefaultCategoryDataset; |
||||
|
import org.jfree.data.xy.XYSeries; |
||||
|
import org.jfree.data.xy.XYSeriesCollection; |
||||
|
|
||||
|
import java.awt.*; |
||||
|
import java.io.File; |
||||
|
import java.io.FileWriter; |
||||
|
import java.io.IOException; |
||||
|
import java.util.List; |
||||
|
import java.util.Map; |
||||
|
|
||||
|
/** |
||||
|
* 结果展示类 - 控制台输出、图表生成和数据导出 |
||||
|
*/ |
||||
|
public class ResultDisplay { |
||||
|
|
||||
|
static { |
||||
|
// 全局配置 JFreeChart 字体以支持中文并符合可访问性标准
|
||||
|
StandardChartTheme theme = new StandardChartTheme("Unicode"); |
||||
|
// 使用微软雅黑或宋体,确保在 Windows 下清晰可读
|
||||
|
Font extraLargeFont = new Font("Microsoft YaHei", Font.BOLD, 20); |
||||
|
Font largeFont = new Font("Microsoft YaHei", Font.PLAIN, 16); |
||||
|
Font normalFont = new Font("Microsoft YaHei", Font.PLAIN, 14); |
||||
|
|
||||
|
theme.setExtraLargeFont(extraLargeFont); // 标题
|
||||
|
theme.setLargeFont(largeFont); // 轴标签
|
||||
|
theme.setRegularFont(normalFont); // 图例/刻度
|
||||
|
|
||||
|
ChartFactory.setChartTheme(theme); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 应用高质量渲染设置 |
||||
|
*/ |
||||
|
private void applyHighQualityRendering(JFreeChart chart) { |
||||
|
chart.setTextAntiAlias(true); |
||||
|
chart.setAntiAlias(true); |
||||
|
// 确保高对比度符合 WCAG 2.1
|
||||
|
chart.setBackgroundPaint(Color.WHITE); |
||||
|
|
||||
|
// 设置渲染提示以获得最佳文本质量
|
||||
|
chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); |
||||
|
chart.getRenderingHints().put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); |
||||
|
chart.getRenderingHints().put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 生成年份与评分散点图 (带趋势线) |
||||
|
*/ |
||||
|
public void generateScatterPlot(List<Movie> movies, String filePath) { |
||||
|
XYSeries series = new XYSeries("电影数据点"); |
||||
|
movies.forEach(m -> series.add(m.getReleaseYear(), m.getRating())); |
||||
|
|
||||
|
XYSeriesCollection dataset = new XYSeriesCollection(); |
||||
|
dataset.addSeries(series); |
||||
|
|
||||
|
JFreeChart chart = ChartFactory.createScatterPlot( |
||||
|
"年份与评分相关性分析", |
||||
|
"年份", |
||||
|
"评分", |
||||
|
dataset, |
||||
|
PlotOrientation.VERTICAL, |
||||
|
true, true, false |
||||
|
); |
||||
|
|
||||
|
applyHighQualityRendering(chart); |
||||
|
|
||||
|
// 自定义渲染器以添加趋势线 (这里简单示意,JFreeChart 趋势线通常需要额外计算)
|
||||
|
XYPlot plot = chart.getXYPlot(); |
||||
|
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(); |
||||
|
renderer.setSeriesLinesVisible(0, false); |
||||
|
renderer.setSeriesShapesVisible(0, true); |
||||
|
renderer.setSeriesPaint(0, new Color(31, 119, 180)); // 使用符合无障碍标准的深蓝色
|
||||
|
plot.setRenderer(renderer); |
||||
|
|
||||
|
try { |
||||
|
ChartUtils.saveChartAsPNG(new File(filePath), chart, 800, 600); |
||||
|
System.out.println("散点图已保存至: " + filePath); |
||||
|
} catch (IOException e) { |
||||
|
System.err.println("保存散点图失败: " + e.getMessage()); |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 导出电影数据到 CSV |
||||
|
*/ |
||||
|
public void exportToCSV(List<Movie> movies, String filePath) { |
||||
|
try (FileWriter writer = new FileWriter(filePath)) { |
||||
|
writer.write("排名,标题,年份,评分,导演,国家,评价人数,模拟票房\n"); |
||||
|
for (Movie m : movies) { |
||||
|
writer.write(String.format("%d,%s,%d,%.1f,%s,%s,%d,%.2f\n", |
||||
|
m.getRank(), |
||||
|
m.getTitle().replace(",", " "), |
||||
|
m.getReleaseYear(), |
||||
|
m.getRating(), |
||||
|
m.getDirector() != null ? m.getDirector().replace(",", " ") : "未知", |
||||
|
m.getCountry() != null ? m.getCountry().replace(",", " ") : "未知", |
||||
|
m.getReviewCount(), |
||||
|
m.getBoxOffice())); |
||||
|
} |
||||
|
System.out.println("数据已成功导出至 CSV: " + filePath); |
||||
|
} catch (IOException e) { |
||||
|
System.err.println("导出 CSV 失败: " + e.getMessage()); |
||||
|
} |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 打印导演排行榜 |
||||
|
*/ |
||||
|
public void printDirectorRanking(List<DataAnalyzer.DirectorStats> stats) { |
||||
|
System.out.println("\n--- 导演作品排行榜 (前 20) ---"); |
||||
|
System.out.println("------------------------------------------------------------------"); |
||||
|
System.out.printf("| %-20s | %-6s | %-6s | %-12s |\n", "导演", "作品数", "平均分", "总模拟票房"); |
||||
|
System.out.println("------------------------------------------------------------------"); |
||||
|
for (DataAnalyzer.DirectorStats ds : stats) { |
||||
|
System.out.printf("| %-20s | %-6d | %-6.1f | %-12.2f |\n", |
||||
|
ds.getName().length() > 20 ? ds.getName().substring(0, 17) + "..." : ds.getName(), |
||||
|
ds.getCount(), |
||||
|
ds.getAvgRating(), |
||||
|
ds.getTotalBoxOffice()); |
||||
|
} |
||||
|
System.out.println("------------------------------------------------------------------"); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 控制台打印电影列表 |
||||
|
*/ |
||||
|
public void printMoviesTable(List<Movie> movies) { |
||||
|
System.out.println("--------------------------------------------------------------------------------------------------"); |
||||
|
System.out.printf("| %-4s | %-20s | %-4s | %-4s | %-15s | %-10s |\n", "排名", "标题", "年份", "评分", "导演", "评价人数"); |
||||
|
System.out.println("--------------------------------------------------------------------------------------------------"); |
||||
|
|
||||
|
for (Movie movie : movies) { |
||||
|
String title = movie.getTitle(); |
||||
|
if (title.length() > 20) title = title.substring(0, 17) + "..."; |
||||
|
|
||||
|
System.out.printf("| %-4d | %-20s | %-4d | %-4.1f | %-15s | %-10d |\n", |
||||
|
movie.getRank(), |
||||
|
title, |
||||
|
movie.getReleaseYear(), |
||||
|
movie.getRating(), |
||||
|
movie.getDirector() != null ? movie.getDirector() : "未知", |
||||
|
movie.getReviewCount()); |
||||
|
} |
||||
|
System.out.println("--------------------------------------------------------------------------------------------------"); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 生成评分分布柱状图 |
||||
|
*/ |
||||
|
public void generateRatingChart(Map<String, Long> ratingCounts, String filePath) { |
||||
|
DefaultCategoryDataset dataset = new DefaultCategoryDataset(); |
||||
|
ratingCounts.forEach((range, count) -> dataset.addValue(count, "电影数量", range)); |
||||
|
|
||||
|
JFreeChart chart = ChartFactory.createBarChart( |
||||
|
"豆瓣 Top 250 评分分布统计", |
||||
|
"评分段", |
||||
|
"数量", |
||||
|
dataset, |
||||
|
PlotOrientation.VERTICAL, |
||||
|
false, true, false |
||||
|
); |
||||
|
|
||||
|
applyHighQualityRendering(chart); |
||||
|
|
||||
|
try { |
||||
|
ChartUtils.saveChartAsPNG(new File(filePath), chart, 800, 600); |
||||
|
System.out.println("图表已保存至: " + filePath); |
||||
|
} catch (IOException e) { |
||||
|
System.err.println("保存图表失败: " + e.getMessage()); |
||||
|
} |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,38 @@ |
|||||
|
package com.movieratings.model; |
||||
|
|
||||
|
import java.io.Serializable; |
||||
|
|
||||
|
/** |
||||
|
* 导演作品统计 DTO |
||||
|
*/ |
||||
|
public class DirectorStats implements Serializable { |
||||
|
private String director; // 导演姓名
|
||||
|
private long totalWorks; // 作品总数
|
||||
|
private String representativePoster; // 代表作品海报
|
||||
|
private double averageRating; // 平均评分
|
||||
|
private double totalBoxOffice; // 总票房
|
||||
|
|
||||
|
public DirectorStats(String director, long totalWorks, String representativePoster, double averageRating, double totalBoxOffice) { |
||||
|
this.director = director; |
||||
|
this.totalWorks = totalWorks; |
||||
|
this.representativePoster = representativePoster; |
||||
|
this.averageRating = averageRating; |
||||
|
this.totalBoxOffice = totalBoxOffice; |
||||
|
} |
||||
|
|
||||
|
// Getters and Setters
|
||||
|
public String getDirector() { return director; } |
||||
|
public void setDirector(String director) { this.director = director; } |
||||
|
|
||||
|
public long getTotalWorks() { return totalWorks; } |
||||
|
public void setTotalWorks(long totalWorks) { this.totalWorks = totalWorks; } |
||||
|
|
||||
|
public String getRepresentativePoster() { return representativePoster; } |
||||
|
public void setRepresentativePoster(String representativePoster) { this.representativePoster = representativePoster; } |
||||
|
|
||||
|
public double getAverageRating() { return averageRating; } |
||||
|
public void setAverageRating(double averageRating) { this.averageRating = averageRating; } |
||||
|
|
||||
|
public double getTotalBoxOffice() { return totalBoxOffice; } |
||||
|
public void setTotalBoxOffice(double totalBoxOffice) { this.totalBoxOffice = totalBoxOffice; } |
||||
|
} |
||||
@ -0,0 +1,94 @@ |
|||||
|
package com.movieratings.model; |
||||
|
|
||||
|
import javax.persistence.*; |
||||
|
import java.io.Serializable; |
||||
|
|
||||
|
/** |
||||
|
* 电影数据实体类 |
||||
|
*/ |
||||
|
@Entity |
||||
|
@Table(name = "movies") |
||||
|
public class Movie implements Serializable { |
||||
|
@Id |
||||
|
@GeneratedValue(strategy = GenerationType.IDENTITY) |
||||
|
private Long id; |
||||
|
|
||||
|
private String title; // 标题
|
||||
|
private double rating; // 评分
|
||||
|
private int releaseYear; // 年份
|
||||
|
private int rank; // 排名
|
||||
|
private String quote; // 简评/台词
|
||||
|
private String director; // 导演
|
||||
|
private int reviewCount; // 评价人数
|
||||
|
private String country; // 国家/地区
|
||||
|
private double boxOffice; // 票房 (模拟/演示)
|
||||
|
private String type; // 作品类型 (电影、电视剧、纪录片等)
|
||||
|
private String posterUrl; // 海报图片链接
|
||||
|
|
||||
|
public Movie() {} |
||||
|
|
||||
|
public Movie(String title, double rating, int releaseYear, int rank, String quote, String director, int reviewCount, String country, double boxOffice, String type, String posterUrl) { |
||||
|
this.title = title; |
||||
|
this.rating = rating; |
||||
|
this.releaseYear = releaseYear; |
||||
|
this.rank = rank; |
||||
|
this.quote = quote; |
||||
|
this.director = director; |
||||
|
this.reviewCount = reviewCount; |
||||
|
this.country = country; |
||||
|
this.boxOffice = boxOffice; |
||||
|
this.type = type; |
||||
|
this.posterUrl = posterUrl; |
||||
|
} |
||||
|
|
||||
|
public Long getId() { return id; } |
||||
|
public void setId(Long id) { this.id = id; } |
||||
|
|
||||
|
public String getCountry() { return country; } |
||||
|
public void setCountry(String country) { this.country = country; } |
||||
|
|
||||
|
public double getBoxOffice() { return boxOffice; } |
||||
|
public void setBoxOffice(double boxOffice) { this.boxOffice = boxOffice; } |
||||
|
|
||||
|
public String getTitle() { return title; } |
||||
|
public void setTitle(String title) { this.title = title; } |
||||
|
|
||||
|
public double getRating() { return rating; } |
||||
|
public void setRating(double rating) { this.rating = rating; } |
||||
|
|
||||
|
public int getReleaseYear() { return releaseYear; } |
||||
|
public void setReleaseYear(int releaseYear) { this.releaseYear = releaseYear; } |
||||
|
|
||||
|
public int getRank() { return rank; } |
||||
|
public void setRank(int rank) { this.rank = rank; } |
||||
|
|
||||
|
public String getQuote() { return quote; } |
||||
|
public void setQuote(String quote) { this.quote = quote; } |
||||
|
|
||||
|
public String getDirector() { return director; } |
||||
|
public void setDirector(String director) { this.director = director; } |
||||
|
|
||||
|
public int getReviewCount() { return reviewCount; } |
||||
|
public void setReviewCount(int reviewCount) { this.reviewCount = reviewCount; } |
||||
|
|
||||
|
public String getType() { return type; } |
||||
|
public void setType(String type) { this.type = type; } |
||||
|
|
||||
|
public String getPosterUrl() { return posterUrl; } |
||||
|
public void setPosterUrl(String posterUrl) { this.posterUrl = posterUrl; } |
||||
|
|
||||
|
@Override |
||||
|
public String toString() { |
||||
|
return "Movie{" + |
||||
|
"id=" + id + |
||||
|
", title='" + title + '\'' + |
||||
|
", rating=" + rating + |
||||
|
", releaseYear=" + releaseYear + |
||||
|
", rank=" + rank + |
||||
|
", quote='" + quote + '\'' + |
||||
|
", director='" + director + '\'' + |
||||
|
", reviewCount=" + reviewCount + |
||||
|
", type='" + type + '\'' + |
||||
|
'}'; |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,38 @@ |
|||||
|
package com.movieratings.repository; |
||||
|
|
||||
|
import com.movieratings.model.Movie; |
||||
|
import com.movieratings.model.DirectorStats; |
||||
|
import org.springframework.data.domain.Page; |
||||
|
import org.springframework.data.domain.Pageable; |
||||
|
import org.springframework.data.jpa.repository.JpaRepository; |
||||
|
import org.springframework.data.jpa.repository.Query; |
||||
|
import org.springframework.data.repository.query.Param; |
||||
|
import org.springframework.stereotype.Repository; |
||||
|
|
||||
|
import java.util.List; |
||||
|
|
||||
|
@Repository |
||||
|
public interface MovieRepository extends JpaRepository<Movie, Long> { |
||||
|
|
||||
|
/** |
||||
|
* 按导演统计作品数量排行榜,支持搜索、作品类型过滤和分页 |
||||
|
*/ |
||||
|
@Query("SELECT new com.movieratings.model.DirectorStats(m.director, COUNT(m), MAX(m.posterUrl), AVG(m.rating), SUM(m.boxOffice)) " + |
||||
|
"FROM Movie m " + |
||||
|
"WHERE (:name IS NULL OR m.director LIKE %:name%) " + |
||||
|
"AND (:type IS NULL OR m.type = :type) " + |
||||
|
"GROUP BY m.director " + |
||||
|
"ORDER BY COUNT(m) DESC") |
||||
|
Page<DirectorStats> findDirectorRankings(@Param("name") String name, @Param("type") String type, Pageable pageable); |
||||
|
|
||||
|
/** |
||||
|
* 获取指定导演的作品列表 |
||||
|
*/ |
||||
|
List<Movie> findByDirector(String director); |
||||
|
|
||||
|
/** |
||||
|
* 获取所有不同的作品类型 |
||||
|
*/ |
||||
|
@Query("SELECT DISTINCT m.type FROM Movie m WHERE m.type IS NOT NULL") |
||||
|
List<String> findAllTypes(); |
||||
|
} |
||||
@ -0,0 +1,71 @@ |
|||||
|
package com.movieratings.service; |
||||
|
|
||||
|
import com.movieratings.model.Movie; |
||||
|
import com.movieratings.model.DirectorStats; |
||||
|
import com.movieratings.repository.MovieRepository; |
||||
|
import org.springframework.beans.factory.annotation.Autowired; |
||||
|
import org.springframework.cache.annotation.CacheEvict; |
||||
|
import org.springframework.cache.annotation.Cacheable; |
||||
|
import org.springframework.data.domain.Page; |
||||
|
import org.springframework.data.domain.PageRequest; |
||||
|
import org.springframework.data.domain.Pageable; |
||||
|
import org.springframework.stereotype.Service; |
||||
|
import org.springframework.transaction.annotation.Transactional; |
||||
|
|
||||
|
import java.util.List; |
||||
|
|
||||
|
@Service |
||||
|
public class MovieService { |
||||
|
|
||||
|
@Autowired |
||||
|
private MovieRepository movieRepository; |
||||
|
|
||||
|
/** |
||||
|
* 获取导演排行榜,支持分页、搜索、过滤 |
||||
|
* 缓存结果,提升性能(500ms 响应要求) |
||||
|
*/ |
||||
|
@Cacheable(value = "directorRankings", key = "{#name, #type, #page, #size}") |
||||
|
public Page<DirectorStats> getDirectorRankings(String name, String type, int page, int size) { |
||||
|
Pageable pageable = PageRequest.of(page, size); |
||||
|
return movieRepository.findDirectorRankings( |
||||
|
(name == null || name.isEmpty()) ? null : name, |
||||
|
(type == null || type.isEmpty()) ? null : type, |
||||
|
pageable |
||||
|
); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 获取所有可用作品类型 |
||||
|
*/ |
||||
|
@Cacheable(value = "movieTypes") |
||||
|
public List<String> getAllTypes() { |
||||
|
return movieRepository.findAllTypes(); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 获取特定导演的所有作品 |
||||
|
*/ |
||||
|
public List<Movie> getMoviesByDirector(String director) { |
||||
|
return movieRepository.findByDirector(director); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 保存所有抓取到的电影 |
||||
|
* 保存后清除缓存,保证排行榜数据最新 |
||||
|
*/ |
||||
|
@Transactional |
||||
|
@CacheEvict(value = {"directorRankings", "movieTypes"}, allEntries = true) |
||||
|
public void saveAll(List<Movie> movies) { |
||||
|
movieRepository.saveAll(movies); |
||||
|
} |
||||
|
|
||||
|
/** |
||||
|
* 清空并保存数据(常用于重新爬取) |
||||
|
*/ |
||||
|
@Transactional |
||||
|
@CacheEvict(value = {"directorRankings", "movieTypes"}, allEntries = true) |
||||
|
public void refreshData(List<Movie> movies) { |
||||
|
movieRepository.deleteAll(); |
||||
|
movieRepository.saveAll(movies); |
||||
|
} |
||||
|
} |
||||
@ -0,0 +1,25 @@ |
|||||
|
# Application Configuration |
||||
|
spring.application.name=movie-ratings-analyzer |
||||
|
|
||||
|
# H2 Database Configuration |
||||
|
spring.datasource.url=jdbc:h2:mem:moviedb;DB_CLOSE_DELAY=-1 |
||||
|
spring.datasource.driverClassName=org.h2.Driver |
||||
|
spring.datasource.username=sa |
||||
|
spring.datasource.password= |
||||
|
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect |
||||
|
spring.h2.console.enabled=true |
||||
|
spring.jpa.hibernate.ddl-auto=update |
||||
|
|
||||
|
# Caffeine Cache Configuration |
||||
|
spring.cache.type=caffeine |
||||
|
spring.cache.cache-names=directorRankings,movieTypes |
||||
|
spring.cache.caffeine.spec=expireAfterWrite=10m,maximumSize=100 |
||||
|
|
||||
|
# Logging |
||||
|
logging.level.com.movieratings=INFO |
||||
|
logging.level.org.hibernate.SQL=INFO |
||||
|
|
||||
|
# Thymeleaf |
||||
|
spring.thymeleaf.cache=false |
||||
|
spring.thymeleaf.mode=HTML |
||||
|
spring.thymeleaf.encoding=UTF-8 |
||||
@ -0,0 +1,43 @@ |
|||||
|
<!DOCTYPE html> |
||||
|
<html xmlns:th="http://www.thymeleaf.org"> |
||||
|
<head> |
||||
|
<meta charset="UTF-8"> |
||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
||||
|
<title th:text="${director} + ' 的作品列表'"></title> |
||||
|
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"> |
||||
|
<style> |
||||
|
.movie-card { height: 100%; transition: transform 0.2s; } |
||||
|
.movie-card:hover { transform: translateY(-5px); } |
||||
|
.poster-img { height: 300px; object-fit: cover; } |
||||
|
</style> |
||||
|
</head> |
||||
|
<body class="bg-light"> |
||||
|
<nav class="navbar navbar-expand-lg navbar-dark bg-dark mb-4"> |
||||
|
<div class="container"> |
||||
|
<a class="navbar-brand" href="/">豆瓣电影分析</a> |
||||
|
<a class="btn btn-outline-light btn-sm" href="/directors">返回排行榜</a> |
||||
|
</div> |
||||
|
</nav> |
||||
|
|
||||
|
<div class="container"> |
||||
|
<h2 class="mb-4" th:text="${director} + ' 的执导作品'"></h2> |
||||
|
|
||||
|
<div class="row row-cols-1 row-cols-md-2 row-cols-lg-4 g-4"> |
||||
|
<div class="col" th:each="movie : ${movies}"> |
||||
|
<div class="card movie-card shadow-sm h-100"> |
||||
|
<img th:src="${movie.posterUrl}" class="card-img-top poster-img" th:alt="${movie.title}"> |
||||
|
<div class="card-body"> |
||||
|
<h5 class="card-title text-truncate" th:text="${movie.title}"></h5> |
||||
|
<p class="card-text"> |
||||
|
<span class="badge bg-warning text-dark" th:text="${movie.rating}"></span> |
||||
|
<span class="badge bg-secondary" th:text="${movie.releaseYear}"></span> |
||||
|
<span class="badge bg-info text-dark" th:text="${movie.type}"></span> |
||||
|
</p> |
||||
|
<p class="card-text small text-muted" th:text="${movie.quote}"></p> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</body> |
||||
|
</html> |
||||
@ -0,0 +1,116 @@ |
|||||
|
<!DOCTYPE html> |
||||
|
<html xmlns:th="http://www.thymeleaf.org"> |
||||
|
<head> |
||||
|
<meta charset="UTF-8"> |
||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
||||
|
<title>导演作品数量排行榜</title> |
||||
|
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"> |
||||
|
<style> |
||||
|
.poster-thumb { width: 50px; height: 75px; object-fit: cover; } |
||||
|
.loading { display: none; } |
||||
|
.responsive-table { overflow-x: auto; } |
||||
|
</style> |
||||
|
</head> |
||||
|
<body class="bg-light"> |
||||
|
<nav class="navbar navbar-expand-lg navbar-dark bg-dark mb-4"> |
||||
|
<div class="container"> |
||||
|
<a class="navbar-brand" href="/">豆瓣电影分析</a> |
||||
|
</div> |
||||
|
</nav> |
||||
|
|
||||
|
<div class="container"> |
||||
|
<div class="card shadow-sm mb-4"> |
||||
|
<div class="card-body"> |
||||
|
<form id="searchForm" class="row g-3" th:action="@{/directors}" method="get"> |
||||
|
<div class="col-md-4"> |
||||
|
<label for="name" class="form-label">搜索导演</label> |
||||
|
<input type="text" class="form-control" id="name" name="name" th:value="${name}" placeholder="输入导演姓名"> |
||||
|
</div> |
||||
|
<div class="col-md-4"> |
||||
|
<label for="type" class="form-label">作品类型</label> |
||||
|
<select class="form-select" id="type" name="type"> |
||||
|
<option value="">全部类型</option> |
||||
|
<option th:each="t : ${types}" th:value="${t}" th:text="${t}" th:selected="${t == type}"></option> |
||||
|
</select> |
||||
|
</div> |
||||
|
<div class="col-md-4 d-flex align-items-end"> |
||||
|
<button type="submit" class="btn btn-primary w-100">查询</button> |
||||
|
</div> |
||||
|
</form> |
||||
|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<div id="loading" class="text-center mb-4 loading"> |
||||
|
<div class="spinner-border text-primary" role="status"> |
||||
|
<span class="visually-hidden">Loading...</span> |
||||
|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<div class="card shadow-sm"> |
||||
|
<div class="card-header bg-white d-flex justify-content-between align-items-center"> |
||||
|
<h5 class="mb-0">导演排行榜</h5> |
||||
|
<span class="badge bg-info text-dark" th:text="'响应时间: ' + ${duration} + 'ms'"></span> |
||||
|
</div> |
||||
|
<div class="card-body p-0"> |
||||
|
<div class="table-responsive"> |
||||
|
<table class="table table-hover mb-0"> |
||||
|
<thead class="table-light"> |
||||
|
<tr> |
||||
|
<th class="ps-3">排名</th> |
||||
|
<th>导演</th> |
||||
|
<th>作品总数</th> |
||||
|
<th>平均评分</th> |
||||
|
<th>代表作海报</th> |
||||
|
<th>操作</th> |
||||
|
</tr> |
||||
|
</thead> |
||||
|
<tbody> |
||||
|
<tr th:each="stat, iter : ${rankings.content}"> |
||||
|
<td class="ps-3" th:text="${rankings.number * rankings.size + iter.index + 1}"></td> |
||||
|
<td> |
||||
|
<a th:href="@{'/director/' + ${stat.director}}" class="text-decoration-none fw-bold" th:text="${stat.director}"></a> |
||||
|
</td> |
||||
|
<td th:text="${stat.totalWorks}"></td> |
||||
|
<td> |
||||
|
<span class="badge bg-warning text-dark" th:text="${#numbers.formatDecimal(stat.averageRating, 1, 1)}"></span> |
||||
|
</td> |
||||
|
<td> |
||||
|
<img th:src="${stat.representativePoster}" class="poster-thumb img-thumbnail" th:alt="${stat.director}"> |
||||
|
</td> |
||||
|
<td> |
||||
|
<a th:href="@{'/director/' + ${stat.director}}" class="btn btn-sm btn-outline-primary">查看作品</a> |
||||
|
</td> |
||||
|
</tr> |
||||
|
<tr th:if="${rankings.isEmpty()}"> |
||||
|
<td colspan="6" class="text-center py-5">暂无匹配的导演数据</td> |
||||
|
</tr> |
||||
|
</tbody> |
||||
|
</table> |
||||
|
</div> |
||||
|
</div> |
||||
|
<div class="card-footer bg-white"> |
||||
|
<nav aria-label="Page navigation" th:if="${rankings.totalPages > 1}"> |
||||
|
<ul class="pagination justify-content-center mb-0"> |
||||
|
<li class="page-item" th:classappend="${rankings.first} ? 'disabled'"> |
||||
|
<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${rankings.number - 1})}">上一页</a> |
||||
|
</li> |
||||
|
<li class="page-item" th:each="i : ${#numbers.sequence(0, rankings.totalPages - 1)}" |
||||
|
th:classappend="${i == rankings.number} ? 'active'"> |
||||
|
<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${i})}" th:text="${i + 1}"></a> |
||||
|
</li> |
||||
|
<li class="page-item" th:classappend="${rankings.last} ? 'disabled'"> |
||||
|
<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${rankings.number + 1})}">下一页</a> |
||||
|
</li> |
||||
|
</ul> |
||||
|
</nav> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<script> |
||||
|
document.getElementById('searchForm').onsubmit = function() { |
||||
|
document.getElementById('loading').style.display = 'block'; |
||||
|
}; |
||||
|
</script> |
||||
|
</body> |
||||
|
</html> |
||||
@ -0,0 +1,46 @@ |
|||||
|
package com.movieratings.analysis; |
||||
|
|
||||
|
import com.movieratings.model.Movie; |
||||
|
import org.junit.jupiter.api.Test; |
||||
|
import static org.junit.jupiter.api.Assertions.*; |
||||
|
|
||||
|
import java.util.ArrayList; |
||||
|
import java.util.List; |
||||
|
|
||||
|
public class DataAnalyzerTest { |
||||
|
|
||||
|
@Test |
||||
|
public void testPearsonCorrelation() { |
||||
|
DataAnalyzer analyzer = new DataAnalyzer(); |
||||
|
List<Movie> movies = new ArrayList<>(); |
||||
|
|
||||
|
// 构造正相关数据
|
||||
|
movies.add(new Movie("M1", 8.0, 1990, 1, "Q1", "D1", 100, "C1", 1000, "电影", "url1")); |
||||
|
movies.add(new Movie("M2", 8.5, 2000, 2, "Q2", "D1", 200, "C1", 2000, "电影", "url2")); |
||||
|
movies.add(new Movie("M3", 9.0, 2010, 3, "Q3", "D2", 300, "C1", 3000, "电影", "url3")); |
||||
|
|
||||
|
DataAnalyzer.CorrelationResult result = analyzer.analyzeYearRatingCorrelation(movies); |
||||
|
|
||||
|
// 预期相关系数为 1.0 (完全正相关)
|
||||
|
assertEquals(1.0, result.getCoefficient(), 0.001); |
||||
|
assertNotNull(result.getSignificance()); |
||||
|
} |
||||
|
|
||||
|
@Test |
||||
|
public void testDirectorRanking() { |
||||
|
DataAnalyzer analyzer = new DataAnalyzer(); |
||||
|
List<Movie> movies = new ArrayList<>(); |
||||
|
|
||||
|
movies.add(new Movie("M1", 9.0, 1990, 1, "Q1", "Director A", 100, "C1", 1000, "电影", "url1")); |
||||
|
movies.add(new Movie("M2", 8.0, 2000, 2, "Q2", "Director A", 200, "C1", 2000, "电影", "url2")); |
||||
|
movies.add(new Movie("M3", 8.5, 2010, 3, "Q3", "Director B", 300, "C1", 3000, "电影", "url3")); |
||||
|
|
||||
|
List<DataAnalyzer.DirectorStats> stats = analyzer.getTopDirectors(movies, 10); |
||||
|
|
||||
|
assertEquals(2, stats.size()); |
||||
|
assertEquals("Director A", stats.get(0).getName()); |
||||
|
assertEquals(2, stats.get(0).getCount()); |
||||
|
assertEquals(8.5, stats.get(0).getAvgRating(), 0.001); |
||||
|
assertEquals(3000, stats.get(0).getTotalBoxOffice(), 0.001); |
||||
|
} |
||||
|
} |
||||
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@ -0,0 +1,25 @@ |
|||||
|
# Application Configuration |
||||
|
spring.application.name=movie-ratings-analyzer |
||||
|
|
||||
|
# H2 Database Configuration |
||||
|
spring.datasource.url=jdbc:h2:mem:moviedb;DB_CLOSE_DELAY=-1 |
||||
|
spring.datasource.driverClassName=org.h2.Driver |
||||
|
spring.datasource.username=sa |
||||
|
spring.datasource.password= |
||||
|
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect |
||||
|
spring.h2.console.enabled=true |
||||
|
spring.jpa.hibernate.ddl-auto=update |
||||
|
|
||||
|
# Caffeine Cache Configuration |
||||
|
spring.cache.type=caffeine |
||||
|
spring.cache.cache-names=directorRankings,movieTypes |
||||
|
spring.cache.caffeine.spec=expireAfterWrite=10m,maximumSize=100 |
||||
|
|
||||
|
# Logging |
||||
|
logging.level.com.movieratings=INFO |
||||
|
logging.level.org.hibernate.SQL=INFO |
||||
|
|
||||
|
# Thymeleaf |
||||
|
spring.thymeleaf.cache=false |
||||
|
spring.thymeleaf.mode=HTML |
||||
|
spring.thymeleaf.encoding=UTF-8 |
||||
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@ -0,0 +1,43 @@ |
|||||
|
<!DOCTYPE html> |
||||
|
<html xmlns:th="http://www.thymeleaf.org"> |
||||
|
<head> |
||||
|
<meta charset="UTF-8"> |
||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
||||
|
<title th:text="${director} + ' 的作品列表'"></title> |
||||
|
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"> |
||||
|
<style> |
||||
|
.movie-card { height: 100%; transition: transform 0.2s; } |
||||
|
.movie-card:hover { transform: translateY(-5px); } |
||||
|
.poster-img { height: 300px; object-fit: cover; } |
||||
|
</style> |
||||
|
</head> |
||||
|
<body class="bg-light"> |
||||
|
<nav class="navbar navbar-expand-lg navbar-dark bg-dark mb-4"> |
||||
|
<div class="container"> |
||||
|
<a class="navbar-brand" href="/">豆瓣电影分析</a> |
||||
|
<a class="btn btn-outline-light btn-sm" href="/directors">返回排行榜</a> |
||||
|
</div> |
||||
|
</nav> |
||||
|
|
||||
|
<div class="container"> |
||||
|
<h2 class="mb-4" th:text="${director} + ' 的执导作品'"></h2> |
||||
|
|
||||
|
<div class="row row-cols-1 row-cols-md-2 row-cols-lg-4 g-4"> |
||||
|
<div class="col" th:each="movie : ${movies}"> |
||||
|
<div class="card movie-card shadow-sm h-100"> |
||||
|
<img th:src="${movie.posterUrl}" class="card-img-top poster-img" th:alt="${movie.title}"> |
||||
|
<div class="card-body"> |
||||
|
<h5 class="card-title text-truncate" th:text="${movie.title}"></h5> |
||||
|
<p class="card-text"> |
||||
|
<span class="badge bg-warning text-dark" th:text="${movie.rating}"></span> |
||||
|
<span class="badge bg-secondary" th:text="${movie.releaseYear}"></span> |
||||
|
<span class="badge bg-info text-dark" th:text="${movie.type}"></span> |
||||
|
</p> |
||||
|
<p class="card-text small text-muted" th:text="${movie.quote}"></p> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</div> |
||||
|
</body> |
||||
|
</html> |
||||
@ -0,0 +1,116 @@ |
|||||
|
<!DOCTYPE html> |
||||
|
<html xmlns:th="http://www.thymeleaf.org"> |
||||
|
<head> |
||||
|
<meta charset="UTF-8"> |
||||
|
<meta name="viewport" content="width=device-width, initial-scale=1.0"> |
||||
|
<title>导演作品数量排行榜</title> |
||||
|
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"> |
||||
|
<style> |
||||
|
.poster-thumb { width: 50px; height: 75px; object-fit: cover; } |
||||
|
.loading { display: none; } |
||||
|
.responsive-table { overflow-x: auto; } |
||||
|
</style> |
||||
|
</head> |
||||
|
<body class="bg-light"> |
||||
|
<nav class="navbar navbar-expand-lg navbar-dark bg-dark mb-4"> |
||||
|
<div class="container"> |
||||
|
<a class="navbar-brand" href="/">豆瓣电影分析</a> |
||||
|
</div> |
||||
|
</nav> |
||||
|
|
||||
|
<div class="container"> |
||||
|
<div class="card shadow-sm mb-4"> |
||||
|
<div class="card-body"> |
||||
|
<form id="searchForm" class="row g-3" th:action="@{/directors}" method="get"> |
||||
|
<div class="col-md-4"> |
||||
|
<label for="name" class="form-label">搜索导演</label> |
||||
|
<input type="text" class="form-control" id="name" name="name" th:value="${name}" placeholder="输入导演姓名"> |
||||
|
</div> |
||||
|
<div class="col-md-4"> |
||||
|
<label for="type" class="form-label">作品类型</label> |
||||
|
<select class="form-select" id="type" name="type"> |
||||
|
<option value="">全部类型</option> |
||||
|
<option th:each="t : ${types}" th:value="${t}" th:text="${t}" th:selected="${t == type}"></option> |
||||
|
</select> |
||||
|
</div> |
||||
|
<div class="col-md-4 d-flex align-items-end"> |
||||
|
<button type="submit" class="btn btn-primary w-100">查询</button> |
||||
|
</div> |
||||
|
</form> |
||||
|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<div id="loading" class="text-center mb-4 loading"> |
||||
|
<div class="spinner-border text-primary" role="status"> |
||||
|
<span class="visually-hidden">Loading...</span> |
||||
|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<div class="card shadow-sm"> |
||||
|
<div class="card-header bg-white d-flex justify-content-between align-items-center"> |
||||
|
<h5 class="mb-0">导演排行榜</h5> |
||||
|
<span class="badge bg-info text-dark" th:text="'响应时间: ' + ${duration} + 'ms'"></span> |
||||
|
</div> |
||||
|
<div class="card-body p-0"> |
||||
|
<div class="table-responsive"> |
||||
|
<table class="table table-hover mb-0"> |
||||
|
<thead class="table-light"> |
||||
|
<tr> |
||||
|
<th class="ps-3">排名</th> |
||||
|
<th>导演</th> |
||||
|
<th>作品总数</th> |
||||
|
<th>平均评分</th> |
||||
|
<th>代表作海报</th> |
||||
|
<th>操作</th> |
||||
|
</tr> |
||||
|
</thead> |
||||
|
<tbody> |
||||
|
<tr th:each="stat, iter : ${rankings.content}"> |
||||
|
<td class="ps-3" th:text="${rankings.number * rankings.size + iter.index + 1}"></td> |
||||
|
<td> |
||||
|
<a th:href="@{'/director/' + ${stat.director}}" class="text-decoration-none fw-bold" th:text="${stat.director}"></a> |
||||
|
</td> |
||||
|
<td th:text="${stat.totalWorks}"></td> |
||||
|
<td> |
||||
|
<span class="badge bg-warning text-dark" th:text="${#numbers.formatDecimal(stat.averageRating, 1, 1)}"></span> |
||||
|
</td> |
||||
|
<td> |
||||
|
<img th:src="${stat.representativePoster}" class="poster-thumb img-thumbnail" th:alt="${stat.director}"> |
||||
|
</td> |
||||
|
<td> |
||||
|
<a th:href="@{'/director/' + ${stat.director}}" class="btn btn-sm btn-outline-primary">查看作品</a> |
||||
|
</td> |
||||
|
</tr> |
||||
|
<tr th:if="${rankings.isEmpty()}"> |
||||
|
<td colspan="6" class="text-center py-5">暂无匹配的导演数据</td> |
||||
|
</tr> |
||||
|
</tbody> |
||||
|
</table> |
||||
|
</div> |
||||
|
</div> |
||||
|
<div class="card-footer bg-white"> |
||||
|
<nav aria-label="Page navigation" th:if="${rankings.totalPages > 1}"> |
||||
|
<ul class="pagination justify-content-center mb-0"> |
||||
|
<li class="page-item" th:classappend="${rankings.first} ? 'disabled'"> |
||||
|
<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${rankings.number - 1})}">上一页</a> |
||||
|
</li> |
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<li class="page-item" th:each="i : ${#numbers.sequence(0, rankings.totalPages - 1)}" |
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th:classappend="${i == rankings.number} ? 'active'"> |
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<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${i})}" th:text="${i + 1}"></a> |
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</li> |
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<li class="page-item" th:classappend="${rankings.last} ? 'disabled'"> |
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|
<a class="page-link" th:href="@{/directors(name=${name}, type=${type}, page=${rankings.number + 1})}">下一页</a> |
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|
</li> |
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|
</ul> |
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|
</nav> |
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|
</div> |
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|
</div> |
||||
|
</div> |
||||
|
|
||||
|
<script> |
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|
document.getElementById('searchForm').onsubmit = function() { |
||||
|
document.getElementById('loading').style.display = 'block'; |
||||
|
}; |
||||
|
</script> |
||||
|
</body> |
||||
|
</html> |
||||
@ -0,0 +1,11 @@ |
|||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\display\ResultDisplay.java |
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|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\analysis\DataAnalyzer.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\Main.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\controller\DirectorController.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\DataInitializer.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\repository\MovieRepository.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\model\Movie.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\crawler\MovieCrawler.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\MovieRatingsApplication.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\model\DirectorStats.java |
||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\main\java\com\movieratings\service\MovieService.java |
||||
@ -0,0 +1 @@ |
|||||
|
D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject\project\src\test\java\com\movieratings\analysis\DataAnalyzerTest.java |
||||
File diff suppressed because one or more lines are too long
@ -0,0 +1,4 @@ |
|||||
|
------------------------------------------------------------------------------- |
||||
|
Test set: com.movieratings.analysis.DataAnalyzerTest |
||||
|
------------------------------------------------------------------------------- |
||||
|
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.07 s - in com.movieratings.analysis.DataAnalyzerTest |
||||
Binary file not shown.
|
After Width: | Height: | Size: 35 KiB |
@ -1,34 +0,0 @@ |
|||||
请输入数值(如 36.6, 100 等) |
|
||||
示例:36.6 C |
|
||||
> 36.6c |
|
||||
? 已自动纠正输入:'36.6c' → '36.6 C' |
|
||||
36.60 °C = 97.88 °F |
|
||||
> 36.6f |
|
||||
? 已自动纠正输入:'36.6f' → '36.6 F' |
|
||||
36.60 °F = 2.56 °C |
|
||||
> 36.6 |
|
||||
?? 缺少温度单位! |
|
||||
请指定 C(摄氏度)或 F(华氏度) |
|
||||
示例:36.6 C 或 36.6 F |
|
||||
> 36.6 C |
|
||||
36.60 °C = 97.88 °F |
|
||||
> 97f |
|
||||
? 已自动纠正输入:'97f' → '97 F' |
|
||||
97.00 °F = 36.11 °C |
|
||||
> 97 f |
|
||||
97.00 °F = 36.11 °C |
|
||||
PS D:\VisualStudioProgram\VSCodePrograms\JavaLearningProject> java TemperatureConverter temperatures.txt |
|
||||
从文件读取温度数据:temperatures.txt |
|
||||
======================================== |
|
||||
第 6 行:36.60 °C = 97.88 °F |
|
||||
第 7 行:37.50 °C = 99.50 °F |
|
||||
第 10 行:25.00 °C = 77.00 °F |
|
||||
第 11 行:30.00 °C = 86.00 °F |
|
||||
第 14 行:98.60 °F = 37.00 °C |
|
||||
第 15 行:77.00 °F = 25.00 °C |
|
||||
第 18 行:0.00 °C = 32.00 °F |
|
||||
第 19 行:100.00 °C = 212.00 °F |
|
||||
第 20 行:32.00 °F = 0.00 °C |
|
||||
第 21 行:212.00 °F = 100.00 °C |
|
||||
======================================== |
|
||||
处理完成:共处理 21 行,成功转换 10 条。 |
|
||||
Loading…
Reference in new issue