public abstract class BaseController : Controller

    {

        public User LoginUser { get;private set; }

        protected RestResult Rest(object data)

        {

            return new RestResult(data);

        }

        protected override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            LoginUser = Session["LoginUser"] as User;

            if (LoginUser == null)

            {

                Response.Redirect("system/index");

            }

            base.OnActionExecuting(filterContext);

        }

        protected virtual  void SetLoginUser(User user)

        {

            Session["LoginUser"] = user;

        }

    }