asp.net-mvc - 对于 ASP.NET 成员，我如何显示 403？

Question

默认情况下，当用户无权访问 protected 页面时，ASP.NET 的成员身份提供程序会重定向到 loginUrl。

有没有办法在不重定向用户的情况下显示自定义 403 错误页面？

我想避免将用户发送到登录页面并在地址栏中包含 ReturnUrl 查询字符串。

如果有人有任何特定于 MVC 的建议，我正在使用 MVC(和 Authorize 属性)。

谢谢!

Answer 1

我最终只是创建了一个返回我的 Forbidden View 的自定义 Authorize 类。效果很好。

public class ForbiddenAuthorizeAttribute : AuthorizeAttribute
    {
        public override void OnAuthorization(AuthorizationContext filterContext)
        {
            if (filterContext == null)
            {
                throw new ArgumentNullException("filterContext");
            }

            if (AuthorizeCore(filterContext.HttpContext))
            {
                // ** IMPORTANT **
                // Since we're performing authorization at the action level, the authorization code runs
                // after the output caching module. In the worst case this could allow an authorized user
                // to cause the page to be cached, then an unauthorized user would later be served the
                // cached page. We work around this by telling proxies not to cache the sensitive page,
                // then we hook our custom authorization code into the caching mechanism so that we have
                // the final say on whether a page should be served from the cache.

                HttpCachePolicyBase cachePolicy = filterContext.HttpContext.Response.Cache;
                cachePolicy.SetProxyMaxAge(new TimeSpan(0));
                cachePolicy.AddValidationCallback(CacheValidateHandler, null /* data */);
            }
            else
            {
                // auth failed, display 403 page
                filterContext.HttpContext.Response.StatusCode = 403;
                ViewResult forbiddenView = new ViewResult();
                forbiddenView.ViewName = "Forbidden";
                filterContext.Result = forbiddenView;
            }
        }

        private void CacheValidateHandler(HttpContext context, object data, ref HttpValidationStatus validationStatus)
        {
            validationStatus = OnCacheAuthorization(new HttpContextWrapper(context));
        }
    }