需求就是要求有些页面需要用户登陆了之后才能访问，那么就需要是否登录验证，直接上代码：

这个可以单独写到一个类里面：

WebAuthenUsers.cs：

using System;using System.IO;using System.Net;using System.Text;using System.Web.Mvc;using WLSH.B2B.Shop.Common;using WLSH.B2B.Shop.Core;using WLSH.B2B.Shop.Core.DataBase;using WLSH.B2B.Shop.Core.DataOther;namespace WLSH.B2B.Shop.Web{    public class WebAuthenUsers : ActionFilterAttribute    {        /// 
        /// 执行Action之前操作        /// 
        ///         public override void OnActionExecuting(ActionExecutingContext filterContext)        {            //BaseServiceContents
     
       _baseContent = new BaseServiceContents
      
       ();            //Users users = _baseContent.Find(Guid.Parse("7CB684BD-667F-4CA3-91D2-A2AF2B802044"));            //filterContext.HttpContext.Session["UserInstance"] = users;            //构造未登陆时的转向url            var urlHelper = new UrlHelper(filterContext.RequestContext);            var url = urlHelper.Action("Login", "Home");            //3.返回文本执行            var contentResult = new ContentResult            {                Content = "
       "            };            //判断是否登陆            if (filterContext.HttpContext.Session == null || filterContext.HttpContext.Session["CustomerInstance"] == null) // || !IsTimeOut()            {                //1.转向操作                //filterContext.Result = new RedirectResult(url);                //2.执行js脚本，貌似只支持ajax请求                //ContentResult contentResult = new ContentResult();                //contentResult.Content = "alert('Hello World!');";                //contentResult.ContentType = "application/x-javascript";                filterContext.Result = contentResult;            }            //else            //{            //    //判断功能权限            //    var controllerName = filterContext.RouteData.Values["controller"].ToString();            //    var actionName = filterContext.RouteData.Values["action"].ToString();            //    string thisRequestUrl = string.Format(",/{0}/{1},", controllerName, actionName);            //    //Users users = App.Instance.HaveAuthorityUser ?? new Users();            //    if (users != null && users.RolesId != Guid.Empty)            //    {            //        //非超级管理员            //        if (users.RolesId != Guid.Parse("B22468F7-4352-4C07-9C9A-62222A67322A"))            //        {            //            string urlAllString = roleFeaturesRepository.GetRoleFeaturesUrlListByRoleId(users.RolesId.ToString());            //            if (!string.IsNullOrEmpty(urlAllString) && urlAllString.IndexOf(",") > -1)            //            {            //                urlAllString = "," + urlAllString + ",";            //                int index = StringHelper.GetStrCount(urlAllString, thisRequestUrl);            //                if (index < 0)            //                    filterContext.Result = contentResult;            //            }            //            else            //                filterContext.Result = contentResult;            //        }            //    }            //    else            //        filterContext.Result = contentResult;            //}            //处理Action之前操作内容根据我们提供的规则来定义这部分内容            base.OnActionExecuting(filterContext);        }        /// 
       
        /// 执行Action之后操作        /// 
        /// 
               public override void OnActionExecuted(ActionExecutedContext filterContext)        {            base.OnActionExecuted(filterContext);        }    }}
      
     

使用方法：

/// 
        /// 购物车页面        /// 
        /// 
             [WebAuthenUsers]        public ActionResult Index()        {            Guid userid = App.Instance.HaveAuthorityCustomer.Id;            if (userid != new Guid())            {                ViewBag.cartList = _cartsRepository.GetCartList(userid.ToString().Trim());            }            return View();        }

[WebAuthenUsers]也可以加在

这前面，表示这个controller都需要登录验证