java/新闻网爬虫/HelpCommand.java

package com.cctv.news.command;

import com.cctv.news.view.OutputView;

public class HelpCommand implements Command {
    private final OutputView view;

    public HelpCommand(OutputView view) {
        this.view = view;
    }

    @Override
    public String getName() {
        return "help";
    }

    @Override
    public String getHelp() {
        return "help - 显示帮助信息";
    }

    @Override
    public void execute(String[] args) {
        view.showMessage("可用命令:");
        view.showMessage("  help  - 显示帮助信息");
        view.showMessage("  list  - 显示已抓取的文章列表");
        view.showMessage("  crawl - 爬取央视新闻");
        view.showMessage("  exit  - 退出程序");
    }
}