package com.yc.education.util;

import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.InputStreamReader;  
import java.io.OutputStream;  
import java.net.ConnectException;  
import java.net.HttpURLConnection;  
import java.net.URL;  
  
import net.sf.json.JSONObject;  
/** 
 * 发起http请求并获取结果  
 * @author zyz 
 * @date 20140522 
 * 
 */  
public class HttpRequestUtil {  
    /**  
     * 发起http请求并获取结果  
     *   
     * @param requestUrl 请求地址  
     * @param requestMethod 请求方式（GET、POST）  
     * @param outputStr 提交的数据  
     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)  
     */    
    public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {    
        JSONObject jsonObject = null;    
        StringBuffer buffer = new StringBuffer();  
        InputStream inputStream=null;  
        try {  
            URL url = new URL(requestUrl);  
            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();    
            httpUrlConn.setDoOutput(true);    
            httpUrlConn.setDoInput(true);    
            httpUrlConn.setUseCaches(false);  
            // 设置请求方式（GET/POST）    
            httpUrlConn.setRequestMethod(requestMethod);    
            if ("GET".equalsIgnoreCase(requestMethod))    
                httpUrlConn.connect();    
    
            // 当有数据需要提交时    
            if (null != outputStr) {    
                OutputStream outputStream = httpUrlConn.getOutputStream();    
                // 注意编码格式，防止中文乱码    
                outputStream.write(outputStr.getBytes("UTF-8"));    
                outputStream.close();    
            }  
            //将返回的输入流转换成字符串    
            inputStream = httpUrlConn.getInputStream();    
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");    
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);    
    
            String str = null;    
            while ((str = bufferedReader.readLine()) != null) {    
                buffer.append(str);    
            }    
            bufferedReader.close();    
            inputStreamReader.close();    
            // 释放资源    
            inputStream.close();    
            inputStream = null;    
            httpUrlConn.disconnect();    
          jsonObject = JSONObject.fromObject(buffer.toString());  
        } catch (ConnectException ce) {    
              ce.printStackTrace();  
              System.out.println("Weixin server connection timed out");  
        } catch (Exception e) {    
               e.printStackTrace();  
               System.out.println("http request error:{}");  
        }finally{  
            try {  
                if(inputStream!=null){  
                    inputStream.close();  
                }  
            } catch (IOException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }  
        }   
        return jsonObject;    
    }    
  
}  