Mvc 3 使用Attribute进行权限控制

每个系统使用的权限控制方式都不一样，自定义鉴权Attribute，可以方便快速的进行处理。

 public class AppAuthorizeAttribute : AuthorizeAttribute
    {
        /// <summary>
        /// 登陆页面
        /// </summary>
        public class PageUrl
        {
            public string Controller { get; set; }
            public string Action { get; set; }
            public string Url
            {
                get { return string.Format("{0}/{1}", Controller, Action); }
            }
        }

        private PageUrl url;

        public override void OnAuthorization(AuthorizationContext filterContext)
        {
            
            if (filterContext == null)
            {
                throw new ArgumentNullException("filterContext");
            }
           
            //获取当前页面地址
            url = new PageUrl();
            url.Controller = filterContext.RouteData.Values["controller"] as string;
            url.Action = filterContext.RouteData.Values["action"] as string;

            //判断用户是否登录
            if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
            {
                // 未登录，跳转至登录页面
                filterContext.Result = new HttpUnauthorizedResult();
                return;
            }
            else 
            {
                if (!AuthorizeCore(filterContext.HttpContext))
                {
                    filterContext.Result = new RedirectResult("/Error/Index/您无权访问该页面，请联系管理员");
                }
                //redirect to login page
            }
        }

        /// <summary>
        /// 覆寫AuthorizeAttribute類別的AuthorizeCore方法
        /// </summary>
        /// <param name="httpContext"></param>
        /// <returns></returns>
        protected override bool AuthorizeCore(HttpContextBase httpContext)
        {
            bool result = false;

            if (httpContext.User.Identity.IsAuthenticated)
            {

                //进行权限校验
                //if(。。。。。)
                result = true;

            }
            return result;
        }

使用：

   [AppAuthorizeAttribute()]
        public ViewResult Index()
        {
            return View()
        }