From cd2efff86351250f10ceaf1146fc670beb61d521 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E8=8C=83=E9=A6=A8=E9=81=A5?= <3603458499qq.com> Date: Fri, 29 May 2026 23:20:38 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B8=85=E7=90=86=EF=BC=9A=E5=8F=AA=E4=BF=9D?= =?UTF-8?q?=E7=95=99=20project/=20=E6=96=87=E4=BB=B6=E5=A4=B9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .gitignore | 36 --- README.md | 2 - src/main/java/com/example/shape/Circle.java | 50 ---- .../java/com/example/shape/Rectangle.java | 69 ----- src/main/java/com/example/shape/Shape.java | 19 -- .../example/shape/ShapeCalculatorTest.java | 26 -- .../java/com/example/shape/ShapeUtil.java | 24 -- src/main/java/com/example/shape/Triangle.java | 69 ----- w1/HelloWorld.java | 5 - w1/TemperatureConverter.java | 74 ----- w10/Command.java | 8 - w9/Course.java | 127 --------- w9/CourseAnalysis.java | 261 ------------------ w9/CourseSystemTest.java | 136 --------- w9/DatabaseUtil.java | 195 ------------- w9/HnuCourseSystem.java | 127 --------- w9/Pair.java | 89 ------ 17 files changed, 1317 deletions(-) delete mode 100644 .gitignore delete mode 100644 README.md delete mode 100644 src/main/java/com/example/shape/Circle.java delete mode 100644 src/main/java/com/example/shape/Rectangle.java delete mode 100644 src/main/java/com/example/shape/Shape.java delete mode 100644 src/main/java/com/example/shape/ShapeCalculatorTest.java delete mode 100644 src/main/java/com/example/shape/ShapeUtil.java delete mode 100644 src/main/java/com/example/shape/Triangle.java delete mode 100644 w1/HelloWorld.java delete mode 100644 w1/TemperatureConverter.java delete mode 100644 w10/Command.java delete mode 100644 w9/Course.java delete mode 100644 w9/CourseAnalysis.java delete mode 100644 w9/CourseSystemTest.java delete mode 100644 w9/DatabaseUtil.java delete mode 100644 w9/HnuCourseSystem.java delete mode 100644 w9/Pair.java diff --git a/.gitignore b/.gitignore deleted file mode 100644 index f362360..0000000 --- a/.gitignore +++ /dev/null @@ -1,36 +0,0 @@ -# Build outputs -target/ -*.class - -# IDE -.idea/ -*.iml -.vscode/ - -# Logs -*.log - -# OS -.DS_Store -Thumbs.db - -# Database -*.db -*.db-journal - -# Temp files -*.xml -*.ps1 -report.txt -Untitled-*.java -*.tmp -*.temp - -# Maven -pom.xml.tag -pom.xml.releaseBackup -pom.xml.versionsBackup -pom.xml.next -release.properties -dependency-reduced-pom.xml -build.log \ No newline at end of file diff --git a/README.md b/README.md deleted file mode 100644 index a8687f1..0000000 --- a/README.md +++ /dev/null @@ -1,2 +0,0 @@ -# java - diff --git a/src/main/java/com/example/shape/Circle.java b/src/main/java/com/example/shape/Circle.java deleted file mode 100644 index d29a20c..0000000 --- a/src/main/java/com/example/shape/Circle.java +++ /dev/null @@ -1,50 +0,0 @@ -package com.example.shape; - -/** - * 圆形类 - * 继承自Shape抽象类，实现getArea()方法 - */ -public class Circle extends Shape { - private double radius; - - /** - * 构造方法 - * @param radius 圆的半径 - */ - public Circle(double radius) { - this.radius = radius; - } - - /** - * 计算圆形面积 - * @return 圆形的面积 - */ - @Override - public double getArea() { - return Math.PI * radius * radius; - } - - /** - * 获取圆的半径 - * @return 圆的半径 - */ - public double getRadius() { - return radius; - } - - /** - * 设置圆的半径 - * @param radius 圆的半径 - */ - public void setRadius(double radius) { - this.radius = radius; - } - - /** - * 绘制圆形 - */ - @Override - public void draw() { - System.out.println("绘制一个半径为 " + radius + " 的圆形"); - } -} \ No newline at end of file diff --git a/src/main/java/com/example/shape/Rectangle.java b/src/main/java/com/example/shape/Rectangle.java deleted file mode 100644 index 73766f5..0000000 --- a/src/main/java/com/example/shape/Rectangle.java +++ /dev/null @@ -1,69 +0,0 @@ -package com.example.shape; - -/** - * 矩形类 - * 继承自Shape抽象类，实现getArea()方法 - */ -public class Rectangle extends Shape { - private double width; - private double height; - - /** - * 构造方法 - * @param width 矩形的宽度 - * @param height 矩形的高度 - */ - public Rectangle(double width, double height) { - this.width = width; - this.height = height; - } - - /** - * 计算矩形面积 - * @return 矩形的面积 - */ - @Override - public double getArea() { - return width * height; - } - - /** - * 获取矩形的宽度 - * @return 矩形的宽度 - */ - public double getWidth() { - return width; - } - - /** - * 设置矩形的宽度 - * @param width 矩形的宽度 - */ - public void setWidth(double width) { - this.width = width; - } - - /** - * 获取矩形的高度 - * @return 矩形的高度 - */ - public double getHeight() { - return height; - } - - /** - * 设置矩形的高度 - * @param height 矩形的高度 - */ - public void setHeight(double height) { - this.height = height; - } - - /** - * 绘制矩形 - */ - @Override - public void draw() { - System.out.println("绘制一个宽为 " + width + "，高为 " + height + " 的矩形"); - } -} \ No newline at end of file diff --git a/src/main/java/com/example/shape/Shape.java b/src/main/java/com/example/shape/Shape.java deleted file mode 100644 index 004ab8b..0000000 --- a/src/main/java/com/example/shape/Shape.java +++ /dev/null @@ -1,19 +0,0 @@ -package com.example.shape; - -/** - * 图形抽象类 - * 包含抽象方法getArea()，用于计算图形面积 - * 包含抽象方法draw()，用于绘制图形 - */ -public abstract class Shape { - /** - * 计算图形面积 - * @return 图形的面积 - */ - public abstract double getArea(); - - /** - * 绘制图形 - */ - public abstract void draw(); -} \ No newline at end of file diff --git a/src/main/java/com/example/shape/ShapeCalculatorTest.java b/src/main/java/com/example/shape/ShapeCalculatorTest.java deleted file mode 100644 index 1f478bc..0000000 --- a/src/main/java/com/example/shape/ShapeCalculatorTest.java +++ /dev/null @@ -1,26 +0,0 @@ -package com.example.shape; - -/** - * 图形面积计算器测试类 - */ -public class ShapeCalculatorTest { - public static void main(String[] args) { - // 创建圆形对象，半径为5 - Circle circle = new Circle(5); - System.out.println("圆形的半径: " + circle.getRadius()); - ShapeUtil.printArea(circle); - ShapeUtil.ranShape(circle); - - // 创建矩形对象，宽为4，高为6 - Rectangle rectangle = new Rectangle(4, 6); - System.out.println("矩形的宽: " + rectangle.getWidth() + ", 高: " + rectangle.getHeight()); - ShapeUtil.printArea(rectangle); - ShapeUtil.ranShape(rectangle); - - // 创建三角形对象，底为8，高为3 - Triangle triangle = new Triangle(8, 3); - System.out.println("三角形的底: " + triangle.getBase() + ", 高: " + triangle.getHeight()); - ShapeUtil.printArea(triangle); - ShapeUtil.ranShape(triangle); - } -} \ No newline at end of file diff --git a/src/main/java/com/example/shape/ShapeUtil.java b/src/main/java/com/example/shape/ShapeUtil.java deleted file mode 100644 index 7a1b64b..0000000 --- a/src/main/java/com/example/shape/ShapeUtil.java +++ /dev/null @@ -1,24 +0,0 @@ -package com.example.shape; - -/** - * 图形工具类 - * 提供打印图形面积的方法和绘制图形的方法 - */ -public class ShapeUtil { - /** - * 打印图形的面积 - * @param shape 图形对象 - */ - public static void printArea(Shape shape) { - double area = shape.getArea(); - System.out.println("图形的面积为: " + area); - } - - /** - * 绘制图形 - * @param s 图形对象 - */ - public static void ranShape(Shape s) { - s.draw(); - } -} \ No newline at end of file diff --git a/src/main/java/com/example/shape/Triangle.java b/src/main/java/com/example/shape/Triangle.java deleted file mode 100644 index 371a028..0000000 --- a/src/main/java/com/example/shape/Triangle.java +++ /dev/null @@ -1,69 +0,0 @@ -package com.example.shape; - -/** - * 三角形类 - * 继承自Shape抽象类，实现getArea()方法 - */ -public class Triangle extends Shape { - private double base; - private double height; - - /** - * 构造方法 - * @param base 三角形的底 - * @param height 三角形的高 - */ - public Triangle(double base, double height) { - this.base = base; - this.height = height; - } - - /** - * 计算三角形面积 - * @return 三角形的面积 - */ - @Override - public double getArea() { - return base * height / 2; - } - - /** - * 获取三角形的底 - * @return 三角形的底 - */ - public double getBase() { - return base; - } - - /** - * 设置三角形的底 - * @param base 三角形的底 - */ - public void setBase(double base) { - this.base = base; - } - - /** - * 获取三角形的高 - * @return 三角形的高 - */ - public double getHeight() { - return height; - } - - /** - * 设置三角形的高 - * @param height 三角形的高 - */ - public void setHeight(double height) { - this.height = height; - } - - /** - * 绘制三角形 - */ - @Override - public void draw() { - System.out.println("绘制一个底为 " + base + "，高为 " + height + " 的三角形"); - } -} \ No newline at end of file diff --git a/w1/HelloWorld.java b/w1/HelloWorld.java deleted file mode 100644 index 3d781ec..0000000 --- a/w1/HelloWorld.java +++ /dev/null @@ -1,5 +0,0 @@ -public class HelloWorld { - public static void main(String[] args) { - System.out.println("Hello, World!"); - } -} \ No newline at end of file diff --git a/w1/TemperatureConverter.java b/w1/TemperatureConverter.java deleted file mode 100644 index b941cd8..0000000 --- a/w1/TemperatureConverter.java +++ /dev/null @@ -1,74 +0,0 @@ -import java.util.Scanner; - -/** - * 温度转换器程序（Java版本） - * 支持摄氏度(C)与华氏度(F)之间互转 - * - * 对应Python原始程序的功能移植 - */ -public class TemperatureConverter { - - /** - * 将摄氏度转换为华氏度 - * - * @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 - * - * @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; - } - - public static void main(String[] args) { - Scanner scanner = new Scanner(System.in); - - // 提示用户输入，格式示例：“36.6 C”或“97 F” - System.out.print("请输入要转换的温度与单位（例如 36.6 C 或 97 F）："); - String input = scanner.nextLine().trim(); - - // 检查输入是否为空 - if (input.isEmpty()) { - System.out.println("输入为空，程序退出。"); - scanner.close(); - return; - } - - // 按空格分割输入 - String[] parts = input.split("\\s+"); - - try { - // 允许用户输入两个部分：数值与单位 - double value = Double.parseDouble(parts[0]); - String unit = (parts.length > 1) ? parts[1].toUpperCase() : "C"; - - // 判断单位并进行相应转换 - if (unit.startsWith("C")) { - // 从摄氏度转换为华氏度 - double f = celsiusToFahrenheit(value); - System.out.printf("%.2f °C = %.2f °F%n", value, f); - } else if (unit.startsWith("F")) { - // 从华氏度转换为摄氏度 - double c = fahrenheitToCelsius(value); - System.out.printf("%.2f °F = %.2f °C%n", value, c); - } else { - System.out.println("未知单位，请使用 C 或 F。"); - } - - } catch (NumberFormatException e) { - System.out.println("输入解析失败，请按示例输入数值与单位，例如：36.6 C"); - } catch (ArrayIndexOutOfBoundsException e) { - System.out.println("输入格式错误，请按示例输入数值与单位，例如：36.6 C"); - } finally { - scanner.close(); - } - } -} \ No newline at end of file diff --git a/w10/Command.java b/w10/Command.java deleted file mode 100644 index 029cadc..0000000 --- a/w10/Command.java +++ /dev/null @@ -1,8 +0,0 @@ -package com.example.datacollect.command; - -import com.example.datacollect.repository.ArticleRepository; - -public interface Command { - String getName(); - void execute(String[] args, ArticleRepository repository); -} diff --git a/w9/Course.java b/w9/Course.java deleted file mode 100644 index 10ef333..0000000 --- a/w9/Course.java +++ /dev/null @@ -1,127 +0,0 @@ -package com.example.entity; - -import java.time.LocalDateTime; - -/** - * 课程实体类 - * 不依赖Spring Boot，使用普通Java类实现 - */ -public class Course { - private Long id; - private String courseCode; - private String courseName; - private Double credit; - private String teacher; - private String department; - private Integer capacity; - private Integer enrolled; - private String classTime; - private String classRoom; - private String courseType; - private String semester; - private LocalDateTime createTime; - - public Long getId() { - return id; - } - - public void setId(Long id) { - this.id = id; - } - - public String getCourseCode() { - return courseCode; - } - - public void setCourseCode(String courseCode) { - this.courseCode = courseCode; - } - - public String getCourseName() { - return courseName; - } - - public void setCourseName(String courseName) { - this.courseName = courseName; - } - - public Double getCredit() { - return credit; - } - - public void setCredit(Double credit) { - this.credit = credit; - } - - public String getTeacher() { - return teacher; - } - - public void setTeacher(String teacher) { - this.teacher = teacher; - } - - public String getDepartment() { - return department; - } - - public void setDepartment(String department) { - this.department = department; - } - - public Integer getCapacity() { - return capacity; - } - - public void setCapacity(Integer capacity) { - this.capacity = capacity; - } - - public Integer getEnrolled() { - return enrolled; - } - - public void setEnrolled(Integer enrolled) { - this.enrolled = enrolled; - } - - public String getClassTime() { - return classTime; - } - - public void setClassTime(String classTime) { - this.classTime = classTime; - } - - public String getClassRoom() { - return classRoom; - } - - public void setClassRoom(String classRoom) { - this.classRoom = classRoom; - } - - public String getCourseType() { - return courseType; - } - - public void setCourseType(String courseType) { - this.courseType = courseType; - } - - public String getSemester() { - return semester; - } - - public void setSemester(String semester) { - this.semester = semester; - } - - public LocalDateTime getCreateTime() { - return createTime; - } - - public void setCreateTime(LocalDateTime createTime) { - this.createTime = createTime; - } -} \ No newline at end of file diff --git a/w9/CourseAnalysis.java b/w9/CourseAnalysis.java deleted file mode 100644 index 7eba498..0000000 --- a/w9/CourseAnalysis.java +++ /dev/null @@ -1,261 +0,0 @@ -package com.example; - -import com.example.entity.Course; - -import java.util.List; -import java.util.Map; -import java.util.HashMap; -import java.util.ArrayList; -import java.util.stream.Collectors; - -/** - * 课程分析类 - * 不依赖Spring Boot，使用普通Java类实现 - */ -public class CourseAnalysis { - - // 无参构造方法 - public CourseAnalysis() { - } - - // 获取课程类型分布 - public Map getCourseTypeDistribution() { - return DatabaseUtil.getCourseTypeDistribution(); - } - - // 获取院系课程分布 - public Map getDepartmentDistribution() { - return DatabaseUtil.getDepartmentDistribution(); - } - - // 获取学分分布 - public Map getCreditDistribution() { - Map distribution = new HashMap<>(); - List courses = DatabaseUtil.getAllCourses(); - - for (Course course : courses) { - double credit = course.getCredit(); - distribution.put(credit, distribution.getOrDefault(credit, 0) + 1); - } - - return distribution; - } - - // 获取热门课程 - public List> getTopCourses() { - return DatabaseUtil.getTopCourses(); - } - - // 获取课程容量使用率 - public List> getCourseUsageRate() { - List> usageRates = new ArrayList<>(); - List courses = DatabaseUtil.getAllCourses(); - - for (Course course : courses) { - Map usageRate = new HashMap<>(); - usageRate.put("courseName", course.getCourseName()); - usageRate.put("capacity", course.getCapacity()); - usageRate.put("enrolled", course.getEnrolled()); - double rate = course.getCapacity() > 0 ? (double) course.getEnrolled() / course.getCapacity() * 100 : 0; - usageRate.put("usageRate", rate); - usageRates.add(usageRate); - } - - // 按使用率排序 - usageRates.sort((a, b) -> Double.compare((Double) b.get("usageRate"), (Double) a.get("usageRate"))); - - return usageRates; - } - - // 获取整体统计信息 - public Map getOverallStatistics() { - Map statistics = new HashMap<>(); - try { - List allCourses = DatabaseUtil.getAllCourses(); - - // 总课程数 - statistics.put("totalCourses", allCourses.size()); - - // 总学分 - double totalCredits = allCourses.stream() - .mapToDouble(Course::getCredit) - .sum(); - statistics.put("totalCredits", totalCredits); - - // 平均学分 - double avgCredit = allCourses.isEmpty() ? 0 : totalCredits / allCourses.size(); - statistics.put("averageCredit", avgCredit); - - // 总容量 - int totalCapacity = allCourses.stream() - .mapToInt(Course::getCapacity) - .sum(); - statistics.put("totalCapacity", totalCapacity); - - // 总已选人数 - int totalEnrolled = allCourses.stream() - .mapToInt(Course::getEnrolled) - .sum(); - statistics.put("totalEnrolled", totalEnrolled); - - // 总体使用率 - double overallUsageRate = totalCapacity > 0 ? (double) totalEnrolled / totalCapacity * 100 : 0; - statistics.put("overallUsageRate", overallUsageRate); - - // 课程类型数量 - long requiredCourses = allCourses.stream() - .filter(course -> "必修课".equals(course.getCourseType())) - .count(); - statistics.put("requiredCourses", requiredCourses); - - long electiveCourses = allCourses.stream() - .filter(course -> "选修课".equals(course.getCourseType())) - .count(); - statistics.put("electiveCourses", electiveCourses); - - // 院系数量 - long departmentCount = allCourses.stream() - .map(Course::getDepartment) - .distinct() - .count(); - statistics.put("departmentCount", departmentCount); - } catch (Exception e) { - System.err.println("获取整体统计信息失败：" + e.getMessage()); - // 返回默认值 - statistics.put("totalCourses", 0); - statistics.put("totalCredits", 0.0); - statistics.put("averageCredit", 0.0); - statistics.put("totalCapacity", 0); - statistics.put("totalEnrolled", 0); - statistics.put("overallUsageRate", 0.0); - statistics.put("requiredCourses", 0); - statistics.put("electiveCourses", 0); - statistics.put("departmentCount", 0); - } - return statistics; - } - - // 获取按院系分组的课程统计 - public Map> getDepartmentStatistics() { - Map> deptStats = new HashMap<>(); - try { - List allCourses = DatabaseUtil.getAllCourses(); - - // 按院系分组 - Map> coursesByDept = allCourses.stream() - .collect(Collectors.groupingBy(Course::getDepartment)); - - for (Map.Entry> entry : coursesByDept.entrySet()) { - String department = entry.getKey(); - List deptCourses = entry.getValue(); - - Map stats = new HashMap<>(); - stats.put("courseCount", deptCourses.size()); - - double deptCredits = deptCourses.stream() - .mapToDouble(Course::getCredit) - .sum(); - stats.put("totalCredits", deptCredits); - - int deptCapacity = deptCourses.stream() - .mapToInt(Course::getCapacity) - .sum(); - stats.put("totalCapacity", deptCapacity); - - int deptEnrolled = deptCourses.stream() - .mapToInt(Course::getEnrolled) - .sum(); - stats.put("totalEnrolled", deptEnrolled); - - double deptUsageRate = deptCapacity > 0 ? (double) deptEnrolled / deptCapacity * 100 : 0; - stats.put("usageRate", deptUsageRate); - - deptStats.put(department, stats); - } - } catch (Exception e) { - System.err.println("获取院系统计信息失败：" + e.getMessage()); - } - return deptStats; - } - - // 获取教师课程统计 - public Map> getTeacherStatistics() { - Map> teacherStats = new HashMap<>(); - try { - List allCourses = DatabaseUtil.getAllCourses(); - - // 按教师分组 - Map> coursesByTeacher = allCourses.stream() - .collect(Collectors.groupingBy(Course::getTeacher)); - - for (Map.Entry> entry : coursesByTeacher.entrySet()) { - String teacher = entry.getKey(); - List teacherCourses = entry.getValue(); - - Map stats = new HashMap<>(); - stats.put("courseCount", teacherCourses.size()); - - double totalCredits = teacherCourses.stream() - .mapToDouble(Course::getCredit) - .sum(); - stats.put("totalCredits", totalCredits); - - int totalEnrolled = teacherCourses.stream() - .mapToInt(Course::getEnrolled) - .sum(); - stats.put("totalEnrolled", totalEnrolled); - - teacherStats.put(teacher, stats); - } - } catch (Exception e) { - System.err.println("获取教师统计信息失败：" + e.getMessage()); - } - return teacherStats; - } - - // 获取课程容量利用率分析 - public Map getCapacityAnalysis() { - Map analysis = new HashMap<>(); - try { - List allCourses = DatabaseUtil.getAllCourses(); - - int totalCapacity = allCourses.stream() - .mapToInt(Course::getCapacity) - .sum(); - - int totalEnrolled = allCourses.stream() - .mapToInt(Course::getEnrolled) - .sum(); - - int availableCapacity = totalCapacity - totalEnrolled; - - // 计算不同使用率区间的课程数量 - long highUsage = allCourses.stream() - .filter(course -> course.getCapacity() > 0 && - (double) course.getEnrolled() / course.getCapacity() >= 0.9) - .count(); - - long mediumUsage = allCourses.stream() - .filter(course -> course.getCapacity() > 0 && - (double) course.getEnrolled() / course.getCapacity() >= 0.5 && - (double) course.getEnrolled() / course.getCapacity() < 0.9) - .count(); - - long lowUsage = allCourses.stream() - .filter(course -> course.getCapacity() > 0 && - (double) course.getEnrolled() / course.getCapacity() < 0.5) - .count(); - - analysis.put("totalCapacity", totalCapacity); - analysis.put("totalEnrolled", totalEnrolled); - analysis.put("availableCapacity", availableCapacity); - analysis.put("highUsageCourses", highUsage); - analysis.put("mediumUsageCourses", mediumUsage); - analysis.put("lowUsageCourses", lowUsage); - - } catch (Exception e) { - System.err.println("获取容量分析失败：" + e.getMessage()); - } - return analysis; - } -} \ No newline at end of file diff --git a/w9/CourseSystemTest.java b/w9/CourseSystemTest.java deleted file mode 100644 index 9c799f5..0000000 --- a/w9/CourseSystemTest.java +++ /dev/null @@ -1,136 +0,0 @@ -package com.example; - -import com.example.entity.Course; - -/** - * 测试类，用于验证湖大选课系统功能 - */ -public class CourseSystemTest { - - public static void main(String[] args) { - // 初始化数据库 - DatabaseUtil.initDatabase(); - - // 清空现有数据 - DatabaseUtil.clearCourses(); - - // 添加测试数据 - addTestData(); - - // 创建CourseAnalysis实例 - CourseAnalysis analysis = new CourseAnalysis(); - - // 测试整体统计信息 - System.out.println("===== 测试整体统计信息 ====="); - System.out.println(analysis.getOverallStatistics()); - - // 测试课程类型分布 - System.out.println("\n===== 测试课程类型分布 ====="); - System.out.println(analysis.getCourseTypeDistribution()); - - // 测试院系统计 - System.out.println("\n===== 测试院系统计 ====="); - System.out.println(analysis.getDepartmentDistribution()); - - // 测试学分分布 - System.out.println("\n===== 测试学分分布 ====="); - System.out.println(analysis.getCreditDistribution()); - - // 测试热门课程 - System.out.println("\n===== 测试热门课程 ====="); - System.out.println(analysis.getTopCourses()); - - // 测试课程容量使用率 - System.out.println("\n===== 测试课程容量使用率 ====="); - System.out.println(analysis.getCourseUsageRate()); - - // 测试按院系分组的统计 - System.out.println("\n===== 测试按院系分组的统计 ====="); - System.out.println(analysis.getDepartmentStatistics()); - - // 测试教师课程统计 - System.out.println("\n===== 测试教师课程统计 ====="); - System.out.println(analysis.getTeacherStatistics()); - - // 测试课程容量利用率分析 - System.out.println("\n===== 测试课程容量利用率分析 ====="); - System.out.println(analysis.getCapacityAnalysis()); - - System.out.println("\n===== 测试完成 ====="); - } - - // 添加测试数据 - private static void addTestData() { - Course course1 = new Course(); - course1.setCourseCode("CS101"); - course1.setCourseName("计算机科学导论"); - course1.setCredit(3.0); - course1.setTeacher("张教授"); - course1.setDepartment("计算机学院"); - course1.setCapacity(100); - course1.setEnrolled(95); - course1.setClassTime("周一 8:00-10:00"); - course1.setClassRoom("A101"); - course1.setCourseType("必修课"); - course1.setSemester("2024春季"); - DatabaseUtil.saveCourse(course1); - - Course course2 = new Course(); - course2.setCourseCode("CS102"); - course2.setCourseName("数据结构"); - course2.setCredit(4.0); - course2.setTeacher("李教授"); - course2.setDepartment("计算机学院"); - course2.setCapacity(80); - course2.setEnrolled(75); - course2.setClassTime("周二 10:00-12:00"); - course2.setClassRoom("A102"); - course2.setCourseType("必修课"); - course2.setSemester("2024春季"); - DatabaseUtil.saveCourse(course2); - - Course course3 = new Course(); - course3.setCourseCode("MATH101"); - course3.setCourseName("高等数学"); - course3.setCredit(5.0); - course3.setTeacher("王教授"); - course3.setDepartment("数学学院"); - course3.setCapacity(120); - course3.setEnrolled(110); - course3.setClassTime("周三 8:00-10:00"); - course3.setClassRoom("B101"); - course3.setCourseType("必修课"); - course3.setSemester("2024春季"); - DatabaseUtil.saveCourse(course3); - - Course course4 = new Course(); - course4.setCourseCode("ENG101"); - course4.setCourseName("大学英语"); - course4.setCredit(2.0); - course4.setTeacher("刘教授"); - course4.setDepartment("外国语学院"); - course4.setCapacity(150); - course4.setEnrolled(120); - course4.setClassTime("周四 14:00-16:00"); - course4.setClassRoom("C101"); - course4.setCourseType("选修课"); - course4.setSemester("2024春季"); - DatabaseUtil.saveCourse(course4); - - Course course5 = new Course(); - course5.setCourseCode("PHYS101"); - course5.setCourseName("大学物理"); - course5.setCredit(4.0); - course5.setTeacher("陈教授"); - course5.setDepartment("物理学院"); - course5.setCapacity(90); - course5.setEnrolled(85); - course5.setClassTime("周五 10:00-12:00"); - course5.setClassRoom("D101"); - course5.setCourseType("必修课"); - course5.setSemester("2024春季"); - DatabaseUtil.saveCourse(course5); - - System.out.println("测试数据添加完成，共添加 5 门课程"); - } -} \ No newline at end of file diff --git a/w9/DatabaseUtil.java b/w9/DatabaseUtil.java deleted file mode 100644 index aa461e0..0000000 --- a/w9/DatabaseUtil.java +++ /dev/null @@ -1,195 +0,0 @@ -package com.example; - -import com.example.entity.Course; - -import java.sql.*; -import java.util.ArrayList; -import java.util.List; -import java.util.Map; -import java.util.HashMap; - -/** - * 数据库工具类 - * 提供数据库操作相关方法 - */ -public class DatabaseUtil { - // 数据库URL - private static final String DB_URL = "jdbc:sqlite:course.db"; - - // 静态初始化块，加载SQLite驱动 - static { - try { - Class.forName("org.sqlite.JDBC"); - System.out.println("SQLite驱动加载成功"); - } catch (ClassNotFoundException e) { - System.err.println("SQLite驱动加载失败: " + e.getMessage()); - } - } - - // 初始化数据库 - public static void initDatabase() { - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement()) { - - // 创建courses表 - String createTableSQL = "CREATE TABLE IF NOT EXISTS courses (" + - "id INTEGER PRIMARY KEY AUTOINCREMENT," + - "course_code TEXT," + - "course_name TEXT," + - "credit REAL," + - "teacher TEXT," + - "department TEXT," + - "capacity INTEGER," + - "enrolled INTEGER," + - "class_time TEXT," + - "class_room TEXT," + - "course_type TEXT," + - "semester TEXT," + - "create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP" + - ")"; - stmt.executeUpdate(createTableSQL); - - System.out.println("数据库初始化成功"); - } catch (SQLException e) { - System.err.println("数据库初始化失败: " + e.getMessage()); - } - } - - // 获取所有课程 - public static List getAllCourses() { - List courses = new ArrayList<>(); - String sql = "SELECT * FROM courses"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement(); - ResultSet rs = stmt.executeQuery(sql)) { - - while (rs.next()) { - Course course = new Course(); - course.setId(rs.getLong("id")); - course.setCourseCode(rs.getString("course_code")); - course.setCourseName(rs.getString("course_name")); - course.setCredit(rs.getDouble("credit")); - course.setTeacher(rs.getString("teacher")); - course.setDepartment(rs.getString("department")); - course.setCapacity(rs.getInt("capacity")); - course.setEnrolled(rs.getInt("enrolled")); - course.setClassTime(rs.getString("class_time")); - course.setClassRoom(rs.getString("class_room")); - course.setCourseType(rs.getString("course_type")); - course.setSemester(rs.getString("semester")); - courses.add(course); - } - } catch (SQLException e) { - System.err.println("获取课程列表失败: " + e.getMessage()); - } - - return courses; - } - - // 获取课程类型分布 - public static Map getCourseTypeDistribution() { - Map distribution = new HashMap<>(); - String sql = "SELECT course_type, COUNT(*) as count FROM courses GROUP BY course_type"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement(); - ResultSet rs = stmt.executeQuery(sql)) { - - while (rs.next()) { - String type = rs.getString("course_type"); - int count = rs.getInt("count"); - distribution.put(type, count); - } - } catch (SQLException e) { - System.err.println("获取课程类型分布失败: " + e.getMessage()); - } - - return distribution; - } - - // 获取院系分布 - public static Map getDepartmentDistribution() { - Map distribution = new HashMap<>(); - String sql = "SELECT department, COUNT(*) as count FROM courses GROUP BY department"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement(); - ResultSet rs = stmt.executeQuery(sql)) { - - while (rs.next()) { - String department = rs.getString("department"); - int count = rs.getInt("count"); - distribution.put(department, count); - } - } catch (SQLException e) { - System.err.println("获取院系分布失败: " + e.getMessage()); - } - - return distribution; - } - - // 获取热门课程 - public static List> getTopCourses() { - List> topCourses = new ArrayList<>(); - String sql = "SELECT course_name, teacher, department, capacity, enrolled FROM courses ORDER BY enrolled DESC LIMIT 10"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement(); - ResultSet rs = stmt.executeQuery(sql)) { - - while (rs.next()) { - Map course = new HashMap<>(); - course.put("courseName", rs.getString("course_name")); - course.put("teacher", rs.getString("teacher")); - course.put("department", rs.getString("department")); - course.put("capacity", rs.getInt("capacity")); - course.put("enrolled", rs.getInt("enrolled")); - topCourses.add(course); - } - } catch (SQLException e) { - System.err.println("获取热门课程失败: " + e.getMessage()); - } - - return topCourses; - } - - // 保存课程 - public static void saveCourse(Course course) { - String sql = "INSERT INTO courses (course_code, course_name, credit, teacher, department, capacity, enrolled, class_time, class_room, course_type, semester) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - PreparedStatement pstmt = conn.prepareStatement(sql)) { - - pstmt.setString(1, course.getCourseCode()); - pstmt.setString(2, course.getCourseName()); - pstmt.setDouble(3, course.getCredit()); - pstmt.setString(4, course.getTeacher()); - pstmt.setString(5, course.getDepartment()); - pstmt.setInt(6, course.getCapacity()); - pstmt.setInt(7, course.getEnrolled()); - pstmt.setString(8, course.getClassTime()); - pstmt.setString(9, course.getClassRoom()); - pstmt.setString(10, course.getCourseType()); - pstmt.setString(11, course.getSemester()); - - pstmt.executeUpdate(); - } catch (SQLException e) { - System.err.println("保存课程失败: " + e.getMessage()); - } - } - - // 清空课程数据 - public static void clearCourses() { - String sql = "DELETE FROM courses"; - - try (Connection conn = DriverManager.getConnection(DB_URL); - Statement stmt = conn.createStatement()) { - - stmt.executeUpdate(sql); - System.out.println("课程数据清空成功"); - } catch (SQLException e) { - System.err.println("清空课程数据失败: " + e.getMessage()); - } - } -} \ No newline at end of file diff --git a/w9/HnuCourseSystem.java b/w9/HnuCourseSystem.java deleted file mode 100644 index 1234481..0000000 --- a/w9/HnuCourseSystem.java +++ /dev/null @@ -1,127 +0,0 @@ -package com.example; - -import java.util.List; -import java.util.Map; -import java.util.Scanner; - -/** - * 湖大选课系统主应用类 - * 不依赖Spring Boot，使用普通Java类实现 - */ -public class HnuCourseSystem { - - public static void main(String[] args) { - // 初始化数据库 - DatabaseUtil.initDatabase(); - - // 创建CourseAnalysis实例 - CourseAnalysis analysis = new CourseAnalysis(); - - // 显示菜单 - try (Scanner scanner = new Scanner(System.in)) { - int choice; - - do { - System.out.println("===== 湖大选课系统 ====="); - System.out.println("1. 查看整体统计信息"); - System.out.println("2. 查看课程类型分布"); - System.out.println("3. 查看院系统计"); - System.out.println("4. 查看学分分布"); - System.out.println("5. 查看热门课程"); - System.out.println("6. 查看课程容量使用率"); - System.out.println("7. 查看按院系分组的统计"); - System.out.println("0. 退出系统"); - System.out.print("请选择操作: "); - - choice = scanner.nextInt(); - scanner.nextLine(); // 消费换行符 - - switch (choice) { - case 1 -> { - // 查看整体统计信息 - System.out.println("\n整体统计信息:"); - Map overallStats = analysis.getOverallStatistics(); - for (Map.Entry entry : overallStats.entrySet()) { - System.out.println(entry.getKey() + ": " + entry.getValue()); - } - } - - case 2 -> { - // 查看课程类型分布 - System.out.println("\n课程类型分布:"); - Map typeDistribution = analysis.getCourseTypeDistribution(); - for (Map.Entry entry : typeDistribution.entrySet()) { - System.out.println(entry.getKey() + ": " + entry.getValue()); - } - } - - case 3 -> { - // 查看院系统计 - System.out.println("\n院系统计:"); - Map deptDistribution = analysis.getDepartmentDistribution(); - for (Map.Entry entry : deptDistribution.entrySet()) { - System.out.println(entry.getKey() + ": " + entry.getValue()); - } - } - - case 4 -> { - // 查看学分分布 - System.out.println("\n学分分布:"); - Map creditDistribution = analysis.getCreditDistribution(); - for (Map.Entry entry : creditDistribution.entrySet()) { - System.out.println(entry.getKey() + "学分: " + entry.getValue() + "门"); - } - } - - case 5 -> { - // 查看热门课程 - System.out.println("\n热门课程:"); - List> topCourses = analysis.getTopCourses(); - for (int i = 0; i < topCourses.size(); i++) { - Map course = topCourses.get(i); - System.out.println((i + 1) + ". " + course.get("courseName") + " - " + course.get("teacher")); - System.out.println(" 院系: " + course.get("department") + ", 容量: " + course.get("capacity") + ", 已选: " + course.get("enrolled")); - } - } - - case 6 -> { - // 查看课程容量使用率 - System.out.println("\n课程容量使用率:"); - List> usageRates = analysis.getCourseUsageRate(); - for (int i = 0; i < Math.min(10, usageRates.size()); i++) { - Map usage = usageRates.get(i); - System.out.println((i + 1) + ". " + usage.get("courseName")); - System.out.println(" 容量: " + usage.get("capacity") + ", 已选: " + usage.get("enrolled") + ", 使用率: " + String.format("%.2f%%", usage.get("usageRate"))); - } - } - - case 7 -> { - // 查看按院系分组的统计 - System.out.println("\n按院系分组的统计:"); - Map> deptStats = analysis.getDepartmentStatistics(); - for (Map.Entry> entry : deptStats.entrySet()) { - String department = entry.getKey(); - Map stats = entry.getValue(); - System.out.println("院系: " + department); - System.out.println(" 课程数量: " + stats.get("courseCount")); - System.out.println(" 总学分: " + stats.get("totalCredits")); - System.out.println(" 总容量: " + stats.get("totalCapacity")); - System.out.println(" 总已选人数: " + stats.get("totalEnrolled")); - System.out.println(" 使用率: " + String.format("%.2f%%", stats.get("usageRate"))); - } - } - - case 0 -> System.out.println("退出系统..."); - - default -> System.out.println("无效选择，请重新输入"); - } - - if (choice != 0) { - System.out.println("\n按Enter键继续..."); - scanner.nextLine(); - } - - } while (choice != 0); - } - } -} diff --git a/w9/Pair.java b/w9/Pair.java deleted file mode 100644 index 6fc8436..0000000 --- a/w9/Pair.java +++ /dev/null @@ -1,89 +0,0 @@ -package com.example; - -/** - * 泛型Pair类，用于存储两个不同类型的值 - * @param 键的类型 - * @param 值的类型 - */ -public class Pair { - private K key; - private V value; - - /** - * 构造方法 - * @param key 键 - * @param value 值 - */ - public Pair(K key, V value) { - this.key = key; - this.value = value; - } - - /** - * 获取键 - * @return 键 - */ - public K getKey() { - return key; - } - - /** - * 设置键 - * @param key 键 - */ - public void setKey(K key) { - this.key = key; - } - - /** - * 获取值 - * @return 值 - */ - public V getValue() { - return value; - } - - /** - * 设置值 - * @param value 值 - */ - public void setValue(V value) { - this.value = value; - } - - @Override - public String toString() { - return "Pair{" + - "key=" + key + - ", value=" + value + - '}'; - } - - @Override - public boolean equals(Object o) { - if (this == o) return true; - if (o == null || getClass() != o.getClass()) return false; - Pair pair = (Pair) o; - if (key != null ? !key.equals(pair.key) : pair.key != null) return false; - return value != null ? value.equals(pair.value) : pair.value == null; - } - - @Override - public int hashCode() { - int result = key != null ? key.hashCode() : 0; - result = 31 * result + (value != null ? value.hashCode() : 0); - return result; - } - - /** - * 静态工厂方法，创建Pair实例 - * @param key 键 - * @param value 值 - * @param 键的类型 - * @param 值的类型 - * @return Pair实例 - */ - public static Pair of(K key, V value) { - return new Pair<>(key, value); - } -}