Aop检查Session,全局过滤器和No全局过滤器

全局过滤器：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace UpdateService.Filter
{
    public class AccessControl : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            bool flag = false;
            List<FilterAttribute> list = filterContext.ActionDescriptor.GetFilterAttributes(false).ToList();
            list.AddRange(filterContext.ActionDescriptor.ControllerDescriptor.GetFilterAttributes(false).ToList());
            foreach (var item in list)
            {
                bool b = item.Match(new AccessControlNoFilter());
                if (b == true)
                {
                    flag = true;
                    break;
                }
            }
            if (flag == true)
            {
                base.OnActionExecuting(filterContext);
            }
            else
            {

                HttpContextBase context = filterContext.HttpContext;
                HttpResponseBase response = filterContext.HttpContext.Response;
                HttpRequestBase request = filterContext.HttpContext.Request;
                if (context.Session["User"] == null)
                {
                    if (request.IsAjaxRequest())
                    {

                        HttpUnauthorizedResult httpStatus = new HttpUnauthorizedResult("Session Timeout");
                        filterContext.Result = httpStatus;
                        //禁用web.config中的form认证
                        //<!--<authentication mode="Forms">
                        //<forms loginUrl="~/Account/Login" timeout="2880" />
                        //</authentication>-->
                    }
                    else
                    {
                        ContentResult con = new ContentResult();
                        con.Content = "<script>alert('当前会话已超时!');location='/Home/Login';</script>";
                        filterContext.Result = con;
                    }
                }
                base.OnActionExecuting(filterContext);
            }

        }
    }
}

NO全局过滤器：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace UpdateService.Filter
{
    public class AccessControlNoFilter : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            base.OnActionExecuting(filterContext);
        }
    }
}

FilterConfig.cs

public class FilterConfig
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
           //全局Session检查
            filters.Add(new AccessControl());
        }
    }

Jquery:

$(function () {
    // 设置jQuery Ajax全局的参数
    $.ajaxSetup({
        complete: function (jqXHR, textStatus, errorThrown) {
if (jqXHR.statusText == "Session Timeout") {
                alert('当前会话已超时!');
                location = "/Home/Login";
            }

        }
    });
});