jquery - 为什么在asp.net mvc中的会话超时后jquery ajax调用失败？

Question

当我的会话变量中有一个值时，我的 ajax 调用可以正常工作......但是当会话超时时，它似乎无法返回空的 json 结果......

public JsonResult GetClients(int currentPage, int pageSize)
        {
            if (Session["userId"]!=null)
            {
                var clients = clirep.FindAllClients(Convert.ToInt32(Session["userId"])).AsQueryable();
                var count = clients.Count();
                var results = new PagedList<ClientBO>(clients, currentPage - 1, pageSize);
                var genericResult = new { Count = count, Results = results ,isRedirect=false};
                return Json(genericResult);
            }
            else
            {
                var genericResult = new {redirectUrl = Url.Action("Create", "Registration"), isRedirect = true };
                return Json(genericResult);
            }

        }

但是其他部分似乎不起作用....

   success: function(data) {
       alert(data.Results);
        if (data.isRedirect) {
            window.location.href = data.redirectUrl;
        }
   }

编辑：

我的 global.asax 有这个，

public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                "Clients",                                             
                "Clients/{action}/{id}",                          
                new { controller = "Clients", action = "Index", id = "" }  
            );

            routes.MapRoute(
               "Registrations",                                              
               "{controller}/{action}/{id}",                          
               new { controller = "Registration", action = "Create", id = "" } 
           );
        }

Answer 1

尝试重定向响应是什么：

success: function(data) {
  location = 'http://www.google.ca';
}

如果重定向，您可以消除这种可能性

然后尝试显式比较变量并暂时保持 URL 硬编码：

success: function(data) {
    if (data.isRedirect && data.isRedirect === true) {
        alert('must redirect to ' + data.redirectUrl);
        location = 'http://www.google.ca';
    }
    else
    {
        alert('not redirecting ' + );
    }
}

您还可以查看data.redirectUrl返回的内容

之后就回来找我...

Answer 2

If the Session has timed out out then the Session object will be null. You are attempting to access this object without checking if it exists which will be throwing an exception.

Do you have an "onError" callback function setup?