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最近在写Android，因为get请求太常用了，就做了个封装，课本整合，

public class HttpUtil {     public static void sendHttpRequest(final String address,final                                         HttpCallbackListener listener){         new Thread(new Runnable() {             @Override             public void run() {                 HttpURLConnection connection=null;                 try{                     URL url=new URL(address);                     connection=(HttpURLConnection)url.openConnection();                     connection.setRequestMethod("GET");                     connection.setConnectTimeout(8000);                     connection.setReadTimeout(8000);                     connection.setDoInput(true);                     connection.setDoOutput(true);                     InputStream in=connection.getInputStream();                     BufferedReader reader=new BufferedReader(new InputStreamReader(in));                     StringBuilder response=new StringBuilder();                     String line;                     while ((line=reader.readLine())!=null){                         response.append(line);                     }                     if(listener!=null){                         listener.onFinish(response.toString());                     }                 }catch (Exception e){                     if(listener!=null){                         listener.onError(e);                     }                 }finally {                     if(connection!=null){                         connection.disconnect();                     }                 }             }         }).start();     } } public interface HttpCallbackListener {     void onFinish(String response);     void onError(Exception e); } activity中使用

    private void sendToGetCoin(int car_id){

        String coinUrl="http://"+ MyIp.ip+":8080/CarSafe/IntegrationServlet?car_id="+car_id;         HttpUtil.sendHttpRequest(coinUrl, new HttpCallbackListener() {             @Override             public void onFinish(String response) {               Message message=new Message();                 message.what=SHOW_COIN;                 message.obj=response;                 handler.sendMessage(message);//这样就完成了和主线程通信，通过主线程显示出来             }             @Override             public void onError(Exception e) {             }         });     }

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