package com.common.util;

import java.io.BufferedReader;
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 java.util.Date;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.common.weixin.access.util.MyX509TrustManager;

/**
 * 公眾平臺通用接口工具類
 * 
 * @author
 * @date 2013-08-09
 */
public class HttpConnectUtil {
private static Logger log = LoggerFactory.getLogger(HttpConnectUtil.class);

/**
* 發(fā)起https請求并獲取結果
* 
* @param requestUrl 請求地址
* @param requestMethod 請求方式（GET、POST）
* @param outputStr 提交的數(shù)據(jù)
* @return JSONObject(通過JSONObject.get(key)的方式獲取json對象的屬性值)
*/
public static String httpRequest(String requestUrl, String requestMethod, String outputStr) {
String result = null;
StringBuffer buffer = new StringBuffer();
try {
URL url = new URL(requestUrl);
HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
// 設置通用的請求屬性
httpUrlConn.setRequestProperty("accept", "*/*");
httpUrlConn.setRequestProperty("connection", "Keep-Alive");
httpUrlConn.setRequestProperty("Charset", "utf-8");
   
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
// 設置請求方式（GET/POST）
httpUrlConn.setRequestMethod(requestMethod);
if ("GET".equalsIgnoreCase(requestMethod))
httpUrlConn.connect();
// 當有數(shù)據(jù)需要提交時
if (null != outputStr) {
OutputStream outputStream = httpUrlConn.getOutputStream();
// 注意編碼格式，防止中文亂碼
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 將返回的輸入流轉換成字符串
InputStream 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();
// 釋放資源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
result = buffer.toString();
//jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("Weixin server connection timed out.");
} catch (Exception e) {
log.error("https request error:{}", e);
}
return result;
}
/**
* 發(fā)起https請求并獲取結果
* 
* @param requestUrl 請求地址
* @param requestMethod 請求方式（GET、POST）
* @param outputStr 提交的數(shù)據(jù)
* @return 結果字符串
*/
public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) throws Exception{
String result = null;
StringBuffer buffer = new StringBuffer();
try {
   // 創(chuàng)建SSLContext對象，并使用我們指定的信任管理器初始化 
   TrustManager[] tm = { new MyX509TrustManager() }; 
   SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE"); 
   sslContext.init(null, tm, new java.security.SecureRandom()); 
   // 從上述SSLContext對象中得到SSLSocketFactory對象 
   SSLSocketFactory ssf = sslContext.getSocketFactory(); 
 
   URL url = new URL(requestUrl); 
   HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); 
   httpUrlConn.setSSLSocketFactory(ssf); 
// 設置通用的請求屬性
httpUrlConn.setRequestProperty("accept", "*/*");
httpUrlConn.setRequestProperty("connection", "Keep-Alive");
httpUrlConn.setRequestProperty("Charset", "utf-8");  
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
// 設置請求方式（GET/POST）
httpUrlConn.setRequestMethod(requestMethod);
if ("GET".equalsIgnoreCase(requestMethod))
httpUrlConn.connect();
// 當有數(shù)據(jù)需要提交時
if (null != outputStr) {
OutputStream outputStream = httpUrlConn.getOutputStream();
// 注意編碼格式，防止中文亂碼
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 將返回的輸入流轉換成字符串
InputStream 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();
// 釋放資源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
result = buffer.toString();
//jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error(requestUrl + " server connection timed out.");
throw new Exception("連接服務器超時");
} catch (Exception e) {
log.error(requestUrl +" https request error:{}", e);
throw new Exception("HTTPS請求錯誤");
}
return result;
} 
public static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;
} 
}