在mvc4中的Global.asax中的會話超時重定向

Question

我試圖檢測會話何時結束，然後將用戶重定向到主頁，然後在我的全局asax文件中完成此操作。

我使用下面的代碼，我發現here

的Global.asax：

protected void Session_Start() 
    { 
     if (Context.Session != null) 
     { 
      if (Context.Session.IsNewSession) 
      { 
       string sCookieHeader = Request.Headers["Cookie"]; 
       if ((null != sCookieHeader) && (sCookieHeader.IndexOf("ASP.NET_SessionId") >= 0)) 
       { 
        //intercept current route 
        HttpContextBase currentContext = new HttpContextWrapper(HttpContext.Current); 
        RouteData routeData = RouteTable.Routes.GetRouteData(currentContext); 


        //Substitute route Data Token Values for the Area 
        routeData.DataTokens["area"] = ""; 
        routeData.DataTokens["UseNamespaceFallback"] = true; 


        //substitute route values 
        routeData.Values["controller"] = "home"; 
        routeData.Values["action"] = "index"; 
        routeData.Values.Add("timedOut", "true"); 
        //routeData.Values["id"] = "timedOut"; 

        IRouteHandler routeHandler = routeData.RouteHandler; 
        RequestContext requestContext = new RequestContext(currentContext, routeData); 

        IHttpHandler httpHandler = routeHandler.GetHttpHandler(requestContext); 
        httpHandler.ProcessRequest(Context); 

        Response.Flush(); 
        Response.End(); 
       } 
      } 
     } 
    } 

我覺得還好，因爲它在開發環境，但是當我嘗試我的服務器上（IIS7）我收到下面的錯誤。 「HttpApplication.AcquireRequestState」

我已經確定使用環節的問題，像here前

「HttpContext.SetSessionStateBehavior」只能被調用，但我只是不能得到它的工作。我認爲問題是在下面的行

IHttpHandler httpHandler = routeHandler.GetHttpHandler(requestContext); 
        httpHandler.ProcessRequest(Context); 

但是我似乎無法得到這個在服務器上工作。任何想法或建議？

Answer 1

您可以爲您的控制器的自定義操作過濾處理這個：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.Mvc; 
using System.Reflection; 


namespace Web { 


    public class SessionExpireFilterAttribute : ActionFilterAttribute { 


     public override void OnActionExecuting(ActionExecutingContext filterContext) { 
      HttpContext ctx = HttpContext.Current; 


      // check if session is supported 
      if (ctx.Session != null) { 


       // check if a new session id was generated 
       if (ctx.Session.IsNewSession) { 


        // If it says it is a new session, but an existing cookie exists, then it must 
        // have timed out 
        string sessionCookie = ctx.Request.Headers[ "Cookie" ]; 
        if ((null != sessionCookie) && (sessionCookie.IndexOf ("ASP.NET_SessionId") >= 0)) { 


         ctx.Response.Redirect ("~/Home/Login"); 
        } 
       } 
      } 


      base.OnActionExecuting (filterContext); 
     } 
    } 
} 

---

然後，我將這個過濾器適用於我的控制器操作方法如下所示：

using System; 
    using System.Collections.Generic; 
    using System.Linq; 
    using System.Web; 
    using System.Web.Mvc; 
    using System.Web.Mvc.Ajax; 

    namespace Web.Controllers { 

     public class HomeController : Controller { 

      [SessionExpireFilter] 
      public ActionResult Index() { 
       // This method will not execute if our session has expired 

       // render Home Page 
       return View(); 
      } 

      public ActionResult Login() { 
       // render Login page 
       return View(); 
      } 
     } 
    }