java/w9/command/HelpCommand.java

package com.example.datacollect.w9.command;

import com.example.datacollect.w9.model.Article;
import com.example.datacollect.w9.view.ConsoleView;
import java.util.List;

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, List<Article> articles) {
        view.printInfo("=== 可用命令 ===");
        System.out.println("help          显示帮助");
        System.out.println("list          列出所有文章");
        System.out.println("crawl <url>  爬取文章（或简写 c <url>）");
        System.out.println("history       查看命令历史");
        System.out.println("exit          退出程序");
    }
}