Question

我创建了一个自定义控制器类，我使用cookie来记录标记“记住我”复选框的用户的曲目。但是当我尝试访问Request.IsAuthenticated时，为了查看用户是否拥有登录票证，它会抛出NullReferenceException。我哪里错了？

我的代码：

public class JekController : Controller
{
    ...
    public JekController()
        : base()
    {
        LoginService = new LoginService();
        TimeSheetService = new TimeSheetService();

        if(!Request.IsAuthenticated) //NullReferenceException: Request is null
        {
            LoginService.SignInFromAuthCookie(Request.Cookies[FormsAuthentication.FormsCookieName]);
        }
    }

Answer 1

您需要的只是System.Web.HttpContext

public JekController() : base()
{
    ...

    if(!System.Web.HttpContext.Current.Request.IsAuthenticated)
    {
        LoginService.SignInFromAuthCookie(Request.Cookies[FormsAuthentication.FormsCookieName]);
    }
}

Answer 2

我解决了这个问题：http://www.dotnetfunda.com/forums/show/18457/requestuser-object-is-null-in-controller-constructor-in-aspnet-mvc

您需要覆盖Initialize（）方法并检查会话：

protected override void Initialize(System.Web.Routing.RequestContext requestContext)
{
    base.Initialize(requestContext);

    if (requestContext.HttpContext.User.Identity.IsAuthenticated)
    {
        //do something
    }
}

Request.IsAuthenticated在控制器基类中抛出NullReferenceException

2 个答案: