调整httpget方法

codegit/CallCenterCommon/CallCenter.Utility/Http/HttpMethods.cs

@@ -19,7 +19,7 @@ namespace CallCenter.Utility
         /// <param name="url">URL.</param>
         /// <param name="param">POST的数据</param>
         /// <returns></returns>
-        public static string HttpPost(string url, string param = null)
+        public static string HttpPost(string url, string param = null,string contenttype= "application/x-www-form-urlencoded")
         {
             HttpWebRequest request;
 
@@ -36,7 +36,8 @@ namespace CallCenter.Utility
             }
 
             request.Method = "POST";
-            request.ContentType = "application/x-www-form-urlencoded";
+            request.ContentType = contenttype;
+            //request.ContentType = "application/json";
             request.Accept = "*/*";
             request.Timeout = 15000;
             request.AllowAutoRedirect = false;