/// <summary>

    /// 自定义的action过滤器 和result过滤器

    /// </summary>

    public class ActionFilterDemo : ActionFilterAttribute

    {

        /// <summary>

        /// 在方法执行之前被触发

        /// </summary>

        /// <param name="filterContext"></param>

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            //判断如果在控制器上贴有SkipAttribute特性标签则跳过下面代码的执行

            if (filterContext.ActionDescriptor.ControllerDescriptor.IsDefined(typeof(SkipAttribute), false))

            {

                return;

            }

            filterContext.HttpContext.Response.Write("1 、OnActionExecuting----<br />");

            //1.0 获取触发当前方法的action名称

            var actionName = filterContext.ActionDescriptor.ActionName;

            //2.0 获取action方法所在的控制器

            var cName = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName;

            filterContext.HttpContext.Response.Write("      1.1 、控制器+action=" + cName + actionName + "<br />");

            //3.0 获取action的参数

            string res = "无参数";

            var prmas = filterContext.ActionParameters;

            if (prmas != null && prmas.Any())

            {

                res = "";

                //打印参数名称和值

                foreach (var ps in prmas)

                {

                    res += "参数名称=" + ps.Key + ",参数值=" + ps.Value + " | ";

                }

            }

            filterContext.HttpContext.Response.Write("      1.2 、参数结果：" + res + "<br />");

            //4.0 获取当前action上的指定的特性标签HttpGet

            object[] atts = filterContext.ActionDescriptor.GetCustomAttributes(typeof(HttpGetAttribute), false);

            var allAtts = filterContext.ActionDescriptor.GetCustomAttributes(false);//获取所有的特性标签

            //4.0.1 判断当前action方法上是否贴有HttpGet的特性标签

            bool isok = filterContext.ActionDescriptor.IsDefined(typeof(HttpGetAttribute), false);

            //5.0 获取当前aciton所在的控制器上的特性标签和判断特性标签

            var allcatts = filterContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes(false);

            var isOK1 = filterContext.ActionDescriptor.ControllerDescriptor.IsDefined(typeof(HttpGetAttribute), false);

            //6.0 其实OnActionExecuting是在方法执行之前执行的  那么当然也可以用来改造验证同意登陆啦  下面是我自己的尝试

             //获取当前登录url   登陆完毕需要跳转回来的

              bool  isLogin=false;   //根据项目的登陆方式判断是否登陆

              if (!isLogin)

              {

                  string call_back = System.Web.HttpContext.Current.Request.Url.ToString();

                  ContentResult result = new ContentResult();

                  result.Content = "<script>alert('请先登录');window.location.href='http://www.xxoo.com/Passport/Login?callback_url=" + call_back + "'</script>";

                  filterContext.Result = result;

                  return;

              }

            base.OnActionExecuting(filterContext);

        }

        /// <summary>

        /// 方法逻辑代码执行以后被触发

        /// </summary>

        /// <param name="filterContext"></param>

        public override void OnActionExecuted(ActionExecutedContext filterContext)

        {

            filterContext.HttpContext.Response.Write("3 、OnActionExecuted----<br />");

            base.OnActionExecuted(filterContext);

        }

        /// <summary>

        /// 方法准备返回结果的时候被触发

        /// </summary>

        /// <param name="filterContext"></param>

        public override void OnResultExecuting(ResultExecutingContext filterContext)

        {

            filterContext.HttpContext.Response.Write("4 、OnResultExecuting----<br />");

            base.OnResultExecuting(filterContext);

        }

        /// <summary>

        /// 方法返回结果后被触发

        /// </summary>

        /// <param name="filterContext"></param>

        public override void OnResultExecuted(ResultExecutedContext filterContext)

        {

            filterContext.HttpContext.Response.Write("6 、OnResultExecuted----<br />");

            base.OnResultExecuted(filterContext);

        }

    }

/// <summary>

    /// 作用：用于捕获action中的未被try{}catch{}捕获的异常

    /// </summary>

    public class ExpAttribute : HandleErrorAttribute

    {

        public override void OnException(ExceptionContext filterContext)

        {

            //1.0获取异常信息

            Exception exp = filterContext.Exception;

            //2.0 将信息写入日志或者db中方便查询

           // System.IO.File.AppendAllText(filterContext.HttpContext.Server.MapPath("/Log/log.txt"), exp.ToString());

            //3.0 通知MVC框架，现在这个异常已经被我处理掉，你不需要将黄页显示给用户

            filterContext.ExceptionHandled = false;

            //4.0 跳转到错误提醒页面

            //filterContext.Result

            filterContext.HttpContext.Response.Redirect("/Error/Error", true);

            base.OnException(filterContext);

        }

    }

public class FilterConfig

    {

        public static void RegisterGlobalFilters(GlobalFilterCollection filters)

        {

            filters.Add(new HandleErrorAttribute());

            //将ActionFilterDemo 注册成为一个全局过滤器,实现当前网站中的任何action方法被执行的时候都

            //会触发过滤器中的相关方法

            filters.Add(new ActionFilterDemo());

            filters.Add(new AuthAttribute());

            filters.Add(new ExpAttribute());

        }

    }

 public class MvcApplication : System.Web.HttpApplication

    {

        protected void Application_Start()

        {

            AreaRegistration.RegisterAllAreas();

            WebApiConfig.Register(GlobalConfiguration.Configuration);

            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);  //自定义的过滤器

            RouteConfig.RegisterRoutes(RouteTable.Routes);

            BundleConfig.RegisterBundles(BundleTable.Bundles);

        }

    }