java/新闻网爬虫/ListCommand.java

package com.cctv.news.command;

import com.cctv.news.view.OutputView;
import java.util.List;

public class ListCommand implements Command {
    private final OutputView view;
    private final List<String> articles;

    public ListCommand(OutputView view, List<String> articles) {
        this.view = view;
        this.articles = articles;
    }

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

    @Override
    public String getHelp() {
        return "list - 显示已抓取的文章列表";
    }

    @Override
    public void execute(String[] args) {
        if (articles.isEmpty()) {
            view.showMessage("目前没有已抓取的文章，请先使用 crawl 命令。");
        } else {
            view.showMessage("已抓取的文章列表:");
            for (int i = 0; i < articles.size(); i++) {
                view.showArticles((i + 1) + ". " + articles.get(i));
            }
        }
    }
}