Java HTML/XML - 如何用Jsoup从网站抓取所有数据

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import java.io.IOException;

public class Main {
    public static void main(String[] args) throws IOException {
        System.out.println(getPrivacyNotice("http://www.w3cschool.cn/","div"));
    }
    public static String getPrivacyNotice(String url, String tag)throws IOException {
        Document doc= Jsoup.connect(url).get();
        return doc.select(tag).first().text();
    }
}