上传文件至 'project'

project/CrawlerController.java

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+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<String, Command> 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());
+        }
+    }
+}

project/CrawlerException.java

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+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;
+    }
+}

project/ErrorCode.java

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+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;
+    }
+}

project/HelpCommand.java

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+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 <url>     - 爬取指定URL的文章并保存");
+        view.printInfo("  analyze <url>   - 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");
+    }
+}

project/ListCommand.java

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+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());
+    }
+}