function submitWechatOfficialAccountsPay()
{
    var strPayType = "03"; 
   var requestJsonStr = setPayOrderRequestJson(strPayType);
    $.ajaxSettings.async = false;
   $.post("/servlet/showStoreEChannel", {   
      type : "payOrder",       
      requestJson :requestJsonStr
   }, function(jsonStr,status) { 
      if (null != jsonStr && "" != jsonStr){
           var obj = $.parseJSON(jsonStr);
             if (null != obj && "" != obj)
             {
                 if(obj.errorCode=="0000")
                 { 
               var strPayUrl = obj.payUrl;                    fm.action =  strPayUrl;
               fm.submit();
               
            }else {
                var errorMessage  = obj.errorMessage;
                     alert(errorMessage);
                     return ;
            }
         }else {
            alert("Error");
            return;
         }
      }else {
            alert("Error");
            return ;
          }
   });
}