import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintWriter;import org.jsoup.Jsoup;import org.jsoup.nodes.Document;import org.jsoup.nodes.Element;import org.jsoup.select.Elements;public class HrefTest {       /**    * 输出文件方法    * @param filePath    * @param sb    * @throws IOException    */    public static void outHref(String filePath,StringBuffer sb) throws IOException{                try {            File file = new File(filePath);            PrintWriter writer = new PrintWriter(new FileOutputStream(file));               writer.write(sb.toString());             writer.close();                     } catch (FileNotFoundException e) {            e.printStackTrace();        }    }    /**     * 定位元素     * @param args     */    public static void main(String[] args) {        String  filePath="/Users/liuqi/Desktop/result.log";        final String url="http://www.baidu.com/";        String str="";        StringBuffer sb=new StringBuffer();        try {            Document doc=Jsoup.connect(url).get();            Elements links=doc.getElementsByTag("a");            for(Element link:links){                if(link.attr("href").contains("baidu"))                     str=link.attr("href").toString();                     sb.append(str+"\n");                     System.out.println(link.attr("href"));                     outHref(filePath, sb);            }                    } catch (IOException e) {            e.printStackTrace();        }            }    }

需要加载jsoup-1.10.1.jar这个jar