public ActionResult HelloWorld(DemoForm demoForm)
        {
            ResponseResult response  = new ResponseResult();
            DemoModel      demoModel = new DemoModel();

            demoModel.UserName = demoForm.Message;
            if (string.IsNullOrEmpty(demoForm.SerialNumber))
            {
                Log4NetUtil.LogWarn(demoForm.ToJson());
                response.Code    = ResponseResultType.ParamError;
                response.Message = "参数错误";
                return(Content(response.ToJson()));
            }

            response.SerialNumber = "2";
            response.Code         = ResponseResultType.Success;
            response.Message      = _env.EnvironmentName;
            response.Data         = demoModel;

            return(Content(response.ToJson()));
        }