Jsoup获取url所有链接

package wang.test;
 
 
  import org.jsoup.Jsoup;
  import org.jsoup.helper.Validate;
  import org.jsoup.nodes.Document;
  import org.jsoup.nodes.Element;
  import org.jsoup.select.Elements;
 
  import java.io.IOException;
 
  /**
   * Example program to list links from a URL.
   */
  public class App2 {
      /**
       * @param args
       * @throws IOException
       */
      public static void main(String[] args) throws IOException {
          //Validate.isTrue(args.length == 1, "usage: supply url to fetch");
          //String url = args[0];
          String url ="http://politics.people.com.cn/n1/2018/1106/c1001-30383657.html";
          print("Fetching %s...", url);
 
          Document doc = Jsoup.connect(url).get();
          Elements links = doc.select("a[href]");
          Elements media = doc.select("[src]");
          Elements imports = doc.select("link[href]");
 
          print("\nMedia: (%d)", media.size());
          for (Element src : media) {
              if (src.tagName().equals("img"))
                  print(" * %s: <%s> %sx%s (%s)",
                          src.tagName(), src.attr("abs:src"), src.attr("width"), src.attr("height"),
                          trim(src.attr("alt"), 20));
              else
                  print(" * %s: <%s>", src.tagName(), src.attr("abs:src"));
          }
 
          print("\nImports: (%d)", imports.size());
          for (Element link : imports) {
              print(" * %s <%s> (%s)", link.tagName(),link.attr("abs:href"), link.attr("rel"));
          }
 
          print("\nLinks: (%d)", links.size());
          for (Element link : links) {
              print(" * a: <%s>  (%s)", link.attr("abs:href"), trim(link.text(), 35));
          }
      }
 
      private static void print(String msg, Object... args) {
          System.out.println(String.format(msg, args));
      }
 
      private static String trim(String s, int width) {
          if (s.length() > width)
              return s.substring(0, width-1) + ".";
          else
              return s;
      }
  }