package com.newflypig.demo;
/**
 * 使用jdk自帶的HttpURLConnection向URL發(fā)送POST請(qǐng)求并輸出響應(yīng)結(jié)果
 * 參數(shù)使用流傳遞，并且硬編碼為字符串"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");
    //建立連接
    URL url=new URL(urlPath);
    HttpURLConnection httpConn=(HttpURLConnection)url.openConnection();
    //設(shè)置參數(shù)
    httpConn.setDoOutput(true);   //需要輸出
    httpConn.setDoInput(true);   //需要輸入
    httpConn.setUseCaches(false);  //不允許緩存
    httpConn.setRequestMethod("POST");   //設(shè)置POST方式連接
    //設(shè)置請(qǐng)求屬性
    httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    httpConn.setRequestProperty("Connection", "Keep-Alive");// 維持長(zhǎng)連接
    httpConn.setRequestProperty("Charset", "UTF-8");
    //連接,也可以不用明文connect，使用下面的httpConn.getOutputStream()會(huì)自動(dòng)connect
    httpConn.connect();
    //建立輸入流，向指向的URL傳入?yún)?shù)
    DataOutputStream dos=new DataOutputStream(httpConn.getOutputStream());
    dos.writeBytes(param);
    dos.flush();
    dos.close();
    //獲得響應(yīng)狀態(tài)
    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());
    } 
  }
}