MVC Action控制方式

1.Controller 的OnActionExecuting中控制

 protected override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            if (filterContext.HttpContext.Request["NoPower"].HasValue() == false)
            {
                filterContext.Result = Redirect("http://www.baidu.com");
                return;
            }
            base.OnActionExecuting(filterContext);
        }

2.ActionFilterAttribute 控制

  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;

3.IActionInvoker 控制

//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;
            }

        }
    }