public JsonResult LoginIn(string name = "", string pwd = "")
        {
            LoginDal        dal        = new LoginDal();
            List <employee> emy        = dal.LoginSel(name, pwd);
            JsonResult      jsonResult = new JsonResult();

            if (emy != null && emy.Count >= 1)
            {
                string     json   = JsonConvert.SerializeObject(emy.FirstOrDefault());
                HttpCookie cookie = new HttpCookie("Login", Convert.ToBase64String(System.Text.Encoding.UTF8.GetBytes(json)));
                Response.Cookies.Add(cookie);
                jsonResult.Data = new { data = json, state = "200" };
                jsonResult.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
                return(jsonResult);
            }
            else
            {
                jsonResult.Data = new { data = "未找到用户!", state = "403" };
                return(jsonResult);
            }
        }