java代码发送JSON格式的httpPOST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 net.sf.json.JSONObject;

public class AppAddTest {

public static final String ADD_URL = "www.2cto.com";

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.connect();

//POST请求

DataOutputStream out = new DataOutputStream(

connection.getOutputStream());

JSONObject obj = new JSONObject();

obj.element("app_name", "asdf");

obj.element("app_ip", "10.21.243.234");

obj.element("app_port", 8080);

obj.element("app_type", "001");

obj.element("app_area", "asd");

out.writeBytes(obj.toString());

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();

}

}