如何在 asp.net mvc 中使用 {SiteName} 处理 [Authorize]

Question

给定一个 mvc4，它在路由中有一个 {sitename} 参数，像这样

routes.MapRoute(
    "Sites", // Route name
    "{sitename}/{controller}/{action}/{id}", // URL with parameters
    new { sitename = "", controller = "Home", action = "Index", id = "" } // Parameter defaults
);

除了 AccountController 和任何其他使用 [Authorize] 属性的重定向到

 ~/Account/Login 

而不是

 ~/{sitename}/Account/Login 

为了一致性和美观

有没有办法改变这种情况？显而易见的答案是创建一个自定义 AuthorizeAttribute 但大多数示例，例如ASP.NET MVC 4 custom Authorize attribute - How to redirect unauthorized users to error page? 的答案 只需调用

 base.HandleUnauthorizedRequest();

所以在我尝试代码/调试/代码/调试路线之前寻求任何帮助！

Answer 1

public class MyAuthorizeAttribute : AuthorizeAttribute
{
    protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        var sitename = filterContext.RouteData.Values["sitename"] as string;
        if (!string.IsNullOrEmpty(sitename))
        {
            var routeValues = new RouteValueDictionary(new
            {
                controller = "account",
                action = "login",
                sitename = sitename,
            });
            filterContext.Result = new RedirectToRouteResult(routeValues);
        }
        else
        {
            base.HandleUnauthorizedRequest(filterContext);
        }
    }
}