java请求url返回json

　　　　

 package cn.it.test;

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;

 public class Demo02 {

     /**
      * @param args
      */
     public static void main(String[] args) {
         String url = "http://10.19.92.132:8080/wssp/formlistenerservlet?fid=2b95e5b8:13b96f5bdff:-7fff&forminstid=e0827606155a41e29a6470f142e626f3&procinst_id=55550899:157d0434850:-7fd8&urlAppuid=1c9263c0671e48eaa8ea2bc121e9c5a2";
         String json = loadJSON(url);
         System.out.println(json);
     }

     public static String loadJSON(String url) {
         StringBuilder json = new StringBuilder();
         try {
             URL oracle = new URL(url);
             URLConnection yc = oracle.openConnection();
             BufferedReader in = new BufferedReader(new InputStreamReader(
                     yc.getInputStream(),"utf-8"));//防止乱码
             String inputLine = null;
             while ((inputLine = in.readLine()) != null) {
                 json.append(inputLine);
             }
             in.close();
         } catch (MalformedURLException e) {
         } catch (IOException e) {
         }
         return json.toString();
     }
 }