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();
    }
}