上传文件至 'w9'

w9/Article.java

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+package com.example.datacollect.model;
+
+public class Article {
+    private String title;
+    private String url;
+    private String content;
+    private String author;
+    private String publishdate;
+
+    public Article(String title, String url, String content, String author, String publishdate) {
+        this.title = title;
+        this.url = url;
+        this.content = content;
+        this.author = author;
+        this.publishdate = publishdate;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+
+    public void setUrl(String url) {
+        this.url = url;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public void setAuthor(String author) {
+        this.author = author;
+    }
+
+    public String getPublishdate() {
+        return publishdate;
+    }
+
+    public void setPublishdate(String publishdate) {
+        this.publishdate = publishdate;
+    }
+
+    @Override
+    public String toString() {
+        return "Article{"
+                + "title='" + title + '\''
+                + ", url='" + url + '\''
+                + ", author='" + author + '\''
+                + ", publishdate='" + publishdate + '\''
+                + '}';
+    }
+}

w9/Command.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import java.util.List;
+
+public interface Command {
+    String getName();
+    void execute(String[] args, List<Article> articles);
+}

w9/CrawlCommand.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import com.example.datacollect.view.ConsoleView;
+import java.util.List;
+
+public class CrawlCommand implements Command {
+    private final ConsoleView view;
+
+    public CrawlCommand(ConsoleView view) {
+        this.view = view;
+    }
+
+    @Override
+    public String getName() {
+        return "crawl";
+    }
+
+    @Override
+    public void execute(String[] args, List<Article> articles) {
+        if (args.length < 2) {
+            view.printError("Usage: crawl <url>");
+            return;
+        }
+        view.printInfo("Stub: would crawl " + args[1]);
+    }
+}

w9/CrawlerController.java

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+package com.example.datacollect.controller;
+
+import com.example.datacollect.command.Command;
+import com.example.datacollect.command.ClearCommand;
+import com.example.datacollect.command.CrawlCommand;
+import com.example.datacollect.command.ExitCommand;
+import com.example.datacollect.command.HelpCommand;
+import com.example.datacollect.command.HistoryCommand;
+import com.example.datacollect.command.ListCommand;
+import com.example.datacollect.model.Article;
+import com.example.datacollect.view.ConsoleView;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.ArrayList;
+
+public class CrawlerController {
+    private final Map<String, Command> commands = new HashMap<>();
+    private final ConsoleView view;
+    private final List<Article> articles;
+    private final List<String> commandHistory = new ArrayList<>();
+
+    public CrawlerController(ConsoleView view, List<Article> articles) {
+        this.view = view;
+        this.articles = articles;
+        register(new HelpCommand(view));
+        register(new ListCommand(view));
+        register(new CrawlCommand(view));
+        register(new ExitCommand(view));
+        register(new ClearCommand(view));
+        register(new HistoryCommand(view, commandHistory));
+    }
+
+    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("Unknown command: " + cmdName);
+            return;
+        }
+        commandHistory.add(text);
+        command.execute(args, articles);
+    }
+}

w9/ExitCommand.java

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+package com.example.datacollect.command;
+
+import com.example.datacollect.model.Article;
+import com.example.datacollect.view.ConsoleView;
+import java.util.List;
+
+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, List<Article> articles) {
+        view.printSuccess("Bye!");
+        System.exit(0);
+    }
+}