此方法用於伺服器請求微信介面

 public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr)
	  {
	    JSONObject jsonObject = null;
	    StringBuffer buffer = new StringBuffer();
	    try
	    {
	      TrustManager[] tm = { new MyX509TrustManager() };
	      SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
	      sslContext.init(null, tm, new SecureRandom());

	      SSLSocketFactory ssf = sslContext.getSocketFactory();

	      URL url = new URL(requestUrl);
	      HttpsURLConnection httpUrlConn = (HttpsURLConnection)url.openConnection();
	      httpUrlConn.setSSLSocketFactory(ssf);

	      httpUrlConn.setDoOutput(true);
	      httpUrlConn.setDoInput(true);
	      httpUrlConn.setUseCaches(false);

	      httpUrlConn.setRequestMethod(requestMethod);

	      if ("GET".equalsIgnoreCase(requestMethod)) {
	        httpUrlConn.connect();
	      }

	      if (outputStr != null) {
	        OutputStream outputStream = httpUrlConn.getOutputStream();

	        outputStream.write(outputStr.getBytes("UTF-8"));
	        outputStream.close();
	      }

	      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();

	      inputStream.close();
	      inputStream = null;
	      httpUrlConn.disconnect();
	      jsonObject = JSONObject.fromObject(buffer.toString());
	    } catch (ConnectException ce) {
	      logger.error("Weixin server connection timed out.");
	    } catch (Exception e) {
	      logger.error("https request error:{}", e);
	    }
	    return jsonObject;
	  }