[ValidateAntiForgeryToken]//防止重复提交
        public ActionResult Register2(Models.user u)
        {
            AjaxResult ajaxResult = new AjaxResult();

            if (ModelState.IsValid)//通过校验
            {
                if (Op_User.Add(u))
                {
                    ajaxResult.Result    = DoResult.Success;
                    ajaxResult.PromptMsg = "注册成功";
                    //修改到登录
                    return(RedirectToAction("Login"));
                }
                else
                {
                    ajaxResult.Result    = DoResult.Failed;
                    ajaxResult.PromptMsg = "注册失败,请重试";
                }
            }
            else
            {
                ajaxResult.Result    = DoResult.Failed;
                ajaxResult.PromptMsg = "输入错误:未填全或者格式错误";
            }
            return(Redirect("Login"));
        }