session.，cookie失效，返回到登录页

 

 

  public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            Account account = AccountModel.GetCurrentAccount();
            if (account == null)
            {
                filterContext.HttpContext.Response.Write(" <script type='text/javascript'> window.top.location='/Account'; </script>");
                filterContext.Result = new EmptyResult();
                return;
            }