上传文件至 'w10'

w10/Command.java

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+package command;
+
+import repository.PaperRepository;
+
+public interface Command {
+    void execute(String[] args, PaperRepository repository);
+    String getDescription();
+    String getName();
+}

w10/CrawlCommand.java

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+package command;
+
+import model.Paper;
+import strategy.CrawlerStrategy;
+import strategy.StrategyFactory;
+import repository.PaperRepository;
+import view.ConsoleView;
+import java.util.List;
+
+public class CrawlCommand implements Command {
+    private ConsoleView view;
+    private StrategyFactory strategyFactory;
+    
+    public CrawlCommand(ConsoleView view, StrategyFactory strategyFactory) {
+        this.view = view;
+        this.strategyFactory = strategyFactory;
+    }
+    
+    @Override
+    public void execute(String[] args, PaperRepository repository) {
+        if (args.length < 2) {
+            view.showError("请提供要爬取的论文网站URL，格式: crawl <URL>");
+            return;
+        }
+        
+        String url = args[1];
+        
+        if (!isValidUrl(url)) {
+            view.showError("无效的URL格式，请提供有效的论文网站URL");
+            return;
+        }
+        
+        try {
+            view.showInfo("开始爬取论文...");
+            view.showInfo("目标URL: " + url);
+            
+            CrawlerStrategy crawler = strategyFactory.createCrawlerByUrl(url);
+            if (crawler == null) {
+                view.showError("不支持的网站，请提供支持的论文网站URL");
+                return;
+            }
+            
+            String platformName = crawler.getPlatformName();
+            repository.init(platformName);
+            
+            List<Paper> papers = crawler.crawl(url, 10);
+            
+            if (papers.isEmpty()) {
+                view.showInfo("未获取到论文");
+            } else {
+                List<Paper> uniquePapers = repository.removeDuplicates(papers);
+                repository.savePapers(uniquePapers);
+                view.showSuccess("成功爬取 " + uniquePapers.size() + " 篇论文");
+            }
+        } catch (Exception e) {
+            view.showError("爬取失败: " + e.getMessage());
+        }
+    }
+    
+    private boolean isValidUrl(String url) {
+        return url != null && (url.startsWith("http://") || url.startsWith("https://"));
+    }
+
+    @Override
+    public String getDescription() {
+        return "爬取指定URL的论文，格式: crawl <论文网站URL>";
+    }
+    
+    @Override
+    public String getName() {
+        return "crawl";
+    }
+}

w10/ExitCommand.java

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+package command;
+
+import view.ConsoleView;
+import repository.PaperRepository;
+
+public class ExitCommand implements Command {
+    private ConsoleView view;
+    
+    public ExitCommand(ConsoleView view) {
+        this.view = view;
+    }
+    
+    @Override
+    public void execute(String[] args, PaperRepository repository) {
+        view.showSuccess("程序已退出");
+        System.exit(0);
+    }
+    
+    @Override
+    public String getDescription() {
+        return "退出程序";
+    }
+    
+    @Override
+    public String getName() {
+        return "exit";
+    }
+}

w10/HelpCommand.java

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+package command;
+
+import view.ConsoleView;
+import java.util.List;
+import repository.PaperRepository;
+
+public class HelpCommand implements Command {
+    private ConsoleView view;
+    private List<Command> commands;
+    
+    public HelpCommand(ConsoleView view, List<Command> commands) {
+        this.view = view;
+        this.commands = commands;
+    }
+    
+    @Override
+    public void execute(String[] args, PaperRepository repository) {
+        view.showInfo("可用命令:");
+        for (Command command : commands) {
+            view.showCommandInfo(command);
+        }
+    }
+    
+    @Override
+    public String getDescription() {
+        return "显示帮助信息";
+    }
+    
+    @Override
+    public String getName() {
+        return "help";
+    }
+}

w10/ListCommand.java

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+package command;
+
+import model.Paper;
+import repository.PaperRepository;
+import view.ConsoleView;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+public class ListCommand implements Command {
+    private ConsoleView view;
+
+    public ListCommand(ConsoleView view) {
+        this.view = view;
+    }
+    
+    @Override
+    public void execute(String[] args, PaperRepository repository) {
+        try {
+            Map<String, List<Paper>> papersByPlatform = repository.loadAllPapersGroupedByPlatform();
+            
+            if (papersByPlatform.isEmpty()) {
+                view.showInfo("暂无论文，请先执行 crawl 命令爬取论文");
+            } else {
+                int totalCount = 0;
+                for (Entry<String, List<Paper>> entry : papersByPlatform.entrySet()) {
+                    totalCount += entry.getValue().size();
+                }
+                
+                view.showInfo("当前已获取 " + totalCount + " 篇论文，分布在 " + papersByPlatform.size() + " 个平台:");
+                System.out.println();
+                
+                int globalIndex = 1;
+                for (Entry<String, List<Paper>> entry : papersByPlatform.entrySet()) {
+                    String platformName = entry.getKey();
+                    List<Paper> papers = entry.getValue();
+                    
+                    System.out.println("【" + platformName + "】 (" + papers.size() + " 篇)");
+                    System.out.println("-".repeat(50));
+                    
+                    for (int i = 0; i < papers.size(); i++) {
+                        Paper paper = papers.get(i);
+                        view.showPaperInfo(globalIndex, paper);
+                        globalIndex++;
+                    }
+                    
+                    System.out.println();
+                }
+            }
+        } catch (Exception e) {
+            view.showError("查询失败: " + e.getMessage());
+        }
+    }
+    
+    @Override
+    public String getDescription() {
+        return "查询已获取的论文列表";
+    }
+    
+    @Override
+    public String getName() {
+        return "list";
+    }
+}