protected override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            if (filterContext.HttpContext.Request["NoPower"].HasValue() == false)

            {

                filterContext.Result = Redirect("http://www.baidu.com");

                return;

            }

            base.OnActionExecuting(filterContext);

        }

  if (HttpContext.Current.Request.HttpMethod == "POST" && MyMvcHelper.RequestIsAjax)

                {

                    filterContext.Result = new JsonMsg() { msg = @"请重新<a onclick=""jv.page(event).LoadView({url:'" + "~/Login".ResolveUrl() + @"'});"">登录</a>" };

                    HttpContext.Current.Response.StatusCode = ;

                    return;

                }

return;

//Controller 中定义协议标准

 protected override IActionInvoker CreateActionInvoker()

        {

            return new MyActionInvoker();

        }

 public class WeiXinWebViewActionInvoker : System.Web.Mvc.ControllerActionInvoker

    {

        public override bool InvokeAction(System.Web.Mvc.ControllerContext controllerContext, string actionName)

        {

            if (controllerContext.Controller as WeiXinWebViewController == null)

            {

                return base.InvokeAction(controllerContext, actionName);

            }

            //描述了控制器的相关信息

            var controllerDescriptor = this.GetControllerDescriptor(controllerContext);            //描述了相关Action的相关信息

            var actionDescriptor = this.FindAction(controllerContext, controllerDescriptor, actionName);

            if (controllerContext.HttpContext.Request.HttpMethod == "POST")

            {

                return base.InvokeAction(controllerContext, actionName);

            }

            var wxwv = controllerContext.Controller as WeiXinWebViewController;

            if (wxwv == null)

            {

                return base.InvokeAction(controllerContext, actionName);

            }

            var wxOAuthSetting = wxwv.GetOAuthCookie();

            if (wxOAuthSetting.HasValue() == false || wxOAuthSetting.Item1.HasValue() == false)

            {

                var url = controllerContext.HttpContext.Request.Url.AbsoluteUri;

                wxwv.OAuthIntro(url).ExecuteResult(controllerContext);

                return true;

            }

            try

            {

                return base.InvokeAction(controllerContext, actionName);

            }

            catch (Exception e)

            {

                (controllerContext.Controller as MyOpenController).TransferToErrorUrl(e.Message).ExecuteResult(controllerContext);

                return true;

            }

        }

    }