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
articles) { if (args.length < 2) { view.printError("Usage: crawl "); return; } String urlStr = args[1]; // URL 格式验证 try { new java.net.URL(urlStr).toURI(); } catch (Exception e) { view.printError("Invalid URL format: " + urlStr); return; } view.printInfo("Stub: would crawl " + urlStr); } }