java/project/App.java

package com.crawler;

import com.crawler.command.Command;
import com.crawler.command.CrawlCommand;
import com.crawler.controller.CrawlerController;
import com.crawler.view.ConsoleView;

import java.util.Scanner;

public class App {
    public static void main(String[] args) {
        ConsoleView view = new ConsoleView();
        CrawlerController controller = new CrawlerController(view);
        Command crawlCommand = new CrawlCommand(controller);
        
        view.showWelcome();
        
        Scanner scanner = new Scanner(System.in);
        boolean running = true;
        
        while (running) {
            view.showMenu();
            String input = scanner.nextLine().trim();
            
            switch (input) {
                case "1":
                    crawlCommand.execute();
                    break;
                case "2":
                    running = false;
                    view.showMessage("程序退出");
                    break;
                default:
                    view.showError("无效选项，请重新输入");
            }
        }
        
        scanner.close();
    }
}