new Thread(new Runnable() {

   @Override

   public void run() {

    String urlString = " ....";

    HttpURLConnection conn = null;

    try {

     URL url = new URL(urlString);

     conn = (HttpURLConnection) url.openConnection();

     conn.setRequestMethod("GET");

     conn.setConnectTimeout(8000);

     conn.setReadTimeout(8000);

     InputStream in = conn.getInputStream();

     // 下面对获得的输入流进行读取

     BufferedReader reader = new BufferedReader(

       new InputStreamReader(in));

     StringBuilder sb = new StringBuilder();

     String line;

     while ((line = reader.readLine()) != null) {

      sb.append(line);

     }

     Message msg = new Message();

     msg.what = 1;

     msg.obj = sb.toString();

     handler.sendMessage(msg);

    } catch (Exception e) {

     e.printStackTrace();

    } finally {

     if (conn != null)

      conn.disconnect();

    }

   }// run方法结束

  });// 线程结束