| package com.newflypig.demo;
/**
* 使用jdk自带的HttpURLConnection向URL发送POST请求并输出响应结果
* 参数使用流传递，并且硬编码为字符串"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");
//建立连接
URL url=new URL(urlPath);
HttpURLConnection httpConn=(HttpURLConnection)url.openConnection();
//设置参数
httpConn.setDoOutput(true); //需要输出
httpConn.setDoInput(true); //需要输入
httpConn.setUseCaches(false); //不允许缓存
httpConn.setRequestMethod("POST"); //设置POST方式连接
//设置请求属性
httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
httpConn.setRequestProperty("Connection", "Keep-Alive");// 维持长连接
httpConn.setRequestProperty("Charset", "UTF-8");
//连接,也可以不用明文connect，使用下面的httpConn.getOutputStream()会自动connect
httpConn.connect();
//建立输入流，向指向的URL传入参数
DataOutputStream dos=new DataOutputStream(httpConn.getOutputStream());
dos.writeBytes(param);
dos.flush();
dos.close();
//获得响应状态
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());
}
}
}
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