java发送JSON格式的http通讯的post请求

package com.test;
 
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
 
import net.sf.json.JSONObject;
 
public class AppHttp {
	public static final String ADD_URL = "http://10.20.121.233:8928/ccs/openInterface/compSystemRece.do";
 
    public static void appadd() {
 
     try{
            //创建连接
            URL url = new URL(ADD_URL);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setRequestMethod("POST");
            connection.setUseCaches(false);
            connection.setInstanceFollowRedirects(true);
            
            //connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            connection.setRequestProperty("Content-Type","application/json; charset=UTF-8");       
            
            connection.connect();
 
            //POST请求
            DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            JSONObject obj = new JSONObject();
 
            obj.put("orderId", "4444444444444"); // 订单号
            
			SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	        System.out.println(sf.format(new Date()));
			obj.put("compTime",sf.format(new Date())); // 投诉时间
 
			obj.put("comperAddress", "我是一个兵"); // 投诉人地址
			
            //System.out.println(obj.toString());
          
            //out.writeBytes(obj.toString());//这个中文会乱码
            out.write(obj.toString().getBytes("UTF-8"));//这样可以处理中文乱码问题
            out.flush();
            out.close();
            
            //读取响应
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String lines;
            StringBuffer sb = new StringBuffer("");
            while ((lines = reader.readLine()) != null) {
                lines = new String(lines.getBytes(), "utf-8");
                sb.append(lines);
            }
            System.out.println(sb);
            reader.close();
            // 断开连接
            connection.disconnect();
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 
    }
 
    public static void main(String[] args) {
        appadd();
    }
 
}

二、所需要的jar包

commons-lang-2.4.jar commons-logging-1.1.1.jar ezmorph-1.0.6.jar json-lib-0.9.jar 四个jar包。

下载这四个jar包的地址 ： http://download.csdn.net/detail/arui_email/7130543