package com.jadyer.http;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
/**
* 使用Java原生API编写发送HTTP_POST请求的工具类
* @see 本工具类仅用于学习了解,实际中推荐使用HttpClientUtil工具类
* @see 地址为http://blog.csdn.net/jadyer/article/details/8087960
* @create Mar 4, 2013 2:47:57 PM
* @author 玄玉
*/
public class NativeHTTPUtil {
private NativeHTTPUtil(){}
/**
* 发送HTTP_POST请求
* @see 若发送的
sendData中含有中文,记得按照双方约定的字符集将中文URLEncoder.encode(string,encodeCharset)
* @see 本方法默认的连接和读取超时均为30秒
* @param reqURL 请求地址
* @param sendData 发送到远程主机的正文数据
* @return HTTP响应码`远程主机响应正文,如
若通信过程中发生异常则返回"HTTP响应码`Failed",如
"200`SUCCESS"若通信过程中发生异常则返回"HTTP响应码`Failed",如
"500`Failed"
*/
public static String sendPostRequest(String reqURL, String sendData){
HttpURLConnection httpURLConnection = null;
OutputStream out = null; //写
InputStream in = null; //读
int responseCode = 0; //远程主机响应的HTTP状态码
try{
URL sendUrl = new URL(reqURL);
httpURLConnection = (HttpURLConnection)sendUrl.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true); //指示应用程序要将数据写入URL连接,其值默认为false
httpURLConnection.setUseCaches(false);
httpURLConnection.setConnectTimeout(30000); //30秒连接超时
httpURLConnection.setReadTimeout(30000); //30秒读取超时
out = httpURLConnection.getOutputStream();
out.write(sendData.toString().getBytes());
out.flush(); //清空缓冲区,发送数据
//使用httpURLConnection.getResponseMessage()可以获取到[HTTP/1.0 200 OK]中的[OK]
responseCode = httpURLConnection.getResponseCode();
////处理返回结果
//BufferedReader br = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
//String row = null;
//String respData = "";
//if((row=br.readLine()) != null){ //readLine()方法在读到换行[\n]或回车[\r]时,即认为该行已终止
// respData = row; //HTTP协议POST方式的最后一行数据为正文数据
//}
//br.close();
in = httpURLConnection.getInputStream();
byte[] byteDatas = new byte[in.available()];
in.read(byteDatas);
return responseCode + "`" + new String(byteDatas);
}catch(Exception e){
System.out.println("与[" + reqURL + "]通信异常,堆栈信息为");
e.printStackTrace();
return responseCode + "`" + "Failed`";
}finally{
if(out != null){
try{
out.close();
}catch (Exception e){
System.out.println("关闭输出流时发生异常,堆栈信息如下");
e.printStackTrace();
}
}
if(in != null){
try{
in.close();
}catch(Exception e){
System.out.println("关闭输入流时发生异常,堆栈信息如下");
e.printStackTrace();
}
}
if(httpURLConnection != null){