上传文件至 'w10'

w10/Command.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.repository.ArticleRepository;
+
+public interface Command {
+    String getName();
+    void execute(String[] args, ArticleRepository repository);
+}

w10/CrawlCommand.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.repository.ArticleRepository;
+import com.example.datacollect.strategy.CrawlStrategy;
+import com.example.datacollect.strategy.StrategyFactory;
+import com.example.datacollect.view.ConsoleView;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+
+public class CrawlCommand implements Command {
+    private final ConsoleView view;
+    private final StrategyFactory strategyFactory;
+
+    public CrawlCommand(ConsoleView view, StrategyFactory strategyFactory) {
+        this.view = view;
+        this.strategyFactory = strategyFactory;
+    }
+
+    @Override
+    public String getName() {
+        return "crawl";
+    }
+
+    @Override
+    public void execute(String[] args, ArticleRepository repository) {
+        if (args.length < 2) {
+            view.printError("Usage: crawl <url>");
+            return;
+        }
+        String url = args[1];
+
+        CrawlStrategy strategy = strategyFactory.getStrategy(url);
+        if (strategy == null) {
+            view.printError("No strategy found for: " + url);
+            return;
+        }
+
+        try {
+            view.printInfo("Crawling: " + url);
+            Document doc = Jsoup.connect(url).get();
+            var articles = strategy.parse(url, doc);
+            for (var article : articles) {
+                repository.add(article);
+            }
+            view.printSuccess("Crawled " + articles.size() + " articles.");
+        } catch (Exception e) {
+            view.printError("Failed to crawl: " + e.getMessage());
+        }
+    }
+}

w10/ExitCommand.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.repository.ArticleRepository;
+import com.example.datacollect.view.ConsoleView;
+
+public class ExitCommand implements Command {
+    private final ConsoleView view;
+
+    public ExitCommand(ConsoleView view) {
+        this.view = view;
+    }
+
+    @Override
+    public String getName() {
+        return "exit";
+    }
+
+    @Override
+    public void execute(String[] args, ArticleRepository repository) {
+        view.printSuccess("Bye!");
+        System.exit(0);
+    }
+}

w10/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("Commands: crawl <url>, list, help, exit");
+    }
+}

w10/Main.java

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+package com.example.datacollect;
+
+import com.example.datacollect.controller.CrawlerController;
+import com.example.datacollect.repository.ArticleRepository;
+import com.example.datacollect.strategy.StrategyFactory;
+import com.example.datacollect.view.ConsoleView;
+
+public class Main {
+
+    public static void main(String[] args) {
+        ConsoleView view = new ConsoleView();
+        ArticleRepository repository = new ArticleRepository();
+        StrategyFactory strategyFactory = new StrategyFactory();
+        CrawlerController controller = new CrawlerController(view, repository, strategyFactory);
+
+        view.printSuccess("Welcome to CLI Crawler (w10_3)! Type help for commands.");
+        while (true) {
+            controller.handle(view.readLine());
+        }
+    }
+}