From ffb1bfcd5adaded3dc469c826d5ebc8dfb8e8d7b Mon Sep 17 00:00:00 2001 From: wuqiuyu <2135752554@qq.com> Date: Sun, 31 May 2026 14:21:05 +0800 Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?= =?UTF-8?q?=20'project'?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- project/CrawlerController.java | 57 ++++++++++++++++++++++++++++++++++ project/CrawlerException.java | 19 ++++++++++++ project/ErrorCode.java | 28 +++++++++++++++++ project/HelpCommand.java | 27 ++++++++++++++++ project/ListCommand.java | 22 +++++++++++++ 5 files changed, 153 insertions(+) create mode 100644 project/CrawlerController.java create mode 100644 project/CrawlerException.java create mode 100644 project/ErrorCode.java create mode 100644 project/HelpCommand.java create mode 100644 project/ListCommand.java diff --git a/project/CrawlerController.java b/project/CrawlerController.java new file mode 100644 index 0000000..e014278 --- /dev/null +++ b/project/CrawlerController.java @@ -0,0 +1,57 @@ +package com.example.datacollect.controller; + +import com.example.datacollect.command.AnalyzeCommand; +import com.example.datacollect.command.Command; +import com.example.datacollect.command.CrawlCommand; +import com.example.datacollect.command.ExitCommand; +import com.example.datacollect.command.HelpCommand; +import com.example.datacollect.command.ListCommand; +import com.example.datacollect.exception.CrawlerException; +import com.example.datacollect.exception.ErrorCode; +import com.example.datacollect.repository.ArticleRepository; +import com.example.datacollect.strategy.StrategyFactory; +import com.example.datacollect.view.ConsoleView; +import java.util.HashMap; +import java.util.Map; + +public class CrawlerController { + private final Map commands = new HashMap<>(); + private final ConsoleView view; + private final ArticleRepository repository; + + public CrawlerController(ConsoleView view, ArticleRepository repository, StrategyFactory strategyFactory) { + this.view = view; + this.repository = repository; + register(new HelpCommand(view)); + register(new ListCommand(view)); + register(new CrawlCommand(view, strategyFactory)); + register(new ExitCommand(view)); + register(new AnalyzeCommand(view, strategyFactory)); + } + + private void register(Command command) { + commands.put(command.getName(), command); + } + + public void handle(String input) { + String text = input == null ? "" : input.trim(); + if (text.isEmpty()) { + return; + } + + String[] args = text.split("\\s+"); + String cmdName = args[0].toLowerCase(); + Command command = commands.get(cmdName); + if (command == null) { + view.printError("[" + ErrorCode.UNKNOWN_COMMAND.getCode() + "] " + ErrorCode.UNKNOWN_COMMAND.getMessage() + ": " + cmdName); + return; + } + try { + command.execute(args, repository); + } catch (CrawlerException e) { + view.printError("[" + e.getErrorCode().getCode() + "] " + e.getMessage()); + } catch (Exception e) { + view.printError("[ERR] 执行命令时发生错误: " + e.getMessage()); + } + } +} \ No newline at end of file diff --git a/project/CrawlerException.java b/project/CrawlerException.java new file mode 100644 index 0000000..4a68ea3 --- /dev/null +++ b/project/CrawlerException.java @@ -0,0 +1,19 @@ +package com.example.datacollect.exception; + +public class CrawlerException extends RuntimeException { + private final ErrorCode errorCode; + + public CrawlerException(ErrorCode errorCode, String message) { + super(message); + this.errorCode = errorCode; + } + + public CrawlerException(ErrorCode errorCode, String message, Throwable cause) { + super(message, cause); + this.errorCode = errorCode; + } + + public ErrorCode getErrorCode() { + return errorCode; + } +} \ No newline at end of file diff --git a/project/ErrorCode.java b/project/ErrorCode.java new file mode 100644 index 0000000..d282242 --- /dev/null +++ b/project/ErrorCode.java @@ -0,0 +1,28 @@ +package com.example.datacollect.exception; + +public enum ErrorCode { + UNKNOWN_COMMAND("CMD001", "未知命令"), + INVALID_URL("URL001", "无效的URL"), + STRATEGY_NOT_FOUND("STR001", "未找到匹配的解析策略"), + NETWORK_ERROR("NET001", "网络请求失败"), + PARSE_ERROR("PRS001", "网页解析失败"), + FILE_IO_ERROR("FIO001", "文件读写错误"), + INVALID_ARGUMENT("ARG001", "参数无效"), + DATA_ACCESS_ERROR("DTA001", "数据访问错误"); + + private final String code; + private final String message; + + ErrorCode(String code, String message) { + this.code = code; + this.message = message; + } + + public String getCode() { + return code; + } + + public String getMessage() { + return message; + } +} \ No newline at end of file diff --git a/project/HelpCommand.java b/project/HelpCommand.java new file mode 100644 index 0000000..a02f321 --- /dev/null +++ b/project/HelpCommand.java @@ -0,0 +1,27 @@ +package com.example.datacollect.command; + +import com.example.datacollect.repository.ArticleRepository; +import com.example.datacollect.view.ConsoleView; + +public class HelpCommand implements Command { + private final ConsoleView view; + + public HelpCommand(ConsoleView view) { + this.view = view; + } + + @Override + public String getName() { + return "help"; + } + + @Override + public void execute(String[] args, ArticleRepository repository) { + view.printInfo("可用命令："); + view.printInfo(" crawl - 爬取指定URL的文章并保存"); + view.printInfo(" analyze - 分析指定URL（不保存数据）"); + view.printInfo(" list - 列出已保存的文章"); + view.printInfo(" help - 显示此帮助信息"); + view.printInfo(" exit - 退出程序"); + } +} \ No newline at end of file diff --git a/project/ListCommand.java b/project/ListCommand.java new file mode 100644 index 0000000..86734f3 --- /dev/null +++ b/project/ListCommand.java @@ -0,0 +1,22 @@ +package com.example.datacollect.command; + +import com.example.datacollect.repository.ArticleRepository; +import com.example.datacollect.view.ConsoleView; + +public class ListCommand implements Command { + private final ConsoleView view; + + public ListCommand(ConsoleView view) { + this.view = view; + } + + @Override + public String getName() { + return "list"; + } + + @Override + public void execute(String[] args, ArticleRepository repository) { + view.display(repository.getAll()); + } +}