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package com.newflypig.demo;

/**

* 使用jdk自帶的HttpURLConnection向URL傳送POST請求並輸出響應結果

* 引數使用流傳遞，並且硬編碼為字串"name=XXX"的格式

*/

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

public class SendPostDemo {

public static void main(String[] args) throws Exception{

String urlPath = new String("http://localhost:8080/Test1/HelloWorld"

//String urlPath = new String("http://localhost:8080/Test1/HelloWorld?name=丁丁".getBytes("UTF-8"));

String param="name="+URLEncoder.encode("丁丁","UTF-8");

//建立連線

URL url=new URL(urlPath);

HttpURLConnection httpConn=(HttpURLConnection)url.openConnection();

//設定引數

httpConn.setDoOutput(true);     //需要輸出

httpConn.setDoInput(true);      //需要輸入

httpConn.setUseCaches(false);   //不允許快取

httpConn.setRequestMethod("POST");      //設定POST方式連線

//設定請求屬性

httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

httpConn.setRequestProperty("Connection", "Keep-Alive");// 維持長連線

httpConn.setRequestProperty("Charset", "UTF-8");

//連線,也可以不用明文connect，使用下面的httpConn.getOutputStream()會自動connect

httpConn.connect();

//建立輸入流，向指向的URL傳入引數

DataOutputStream dos=new DataOutputStream(httpConn.getOutputStream());

dos.writeBytes(param);

dos.flush();

dos.close();

//獲得響應狀態

int resultCode=httpConn.getResponseCode();

if(HttpURLConnection.HTTP_OK==resultCode){

StringBuffer sb=new StringBuffer();

String readLine=new String();

BufferedReader responseReader=new BufferedReader(new InputStreamReader(httpConn.getInputStream(),"UTF-8"));

while((readLine=responseReader.readLine())!=null){

sb.append(readLine).append("\n");

}

responseReader.close();

System.out.println(sb.toString());

}   

}

}