实施"Down for maintenance"页面

Question

我知道我们可以简单地使用app_offline.htm文件来执行此操作.

但是如果我的IP是1.2.3.4(例如),我希望能够访问该网站,以便我可以进行最终测试.

if( IpAddress != "1.2.3.4" )
{
    return Redirect( offlinePageUrl );
}

我们如何在ASP.NET MVC 3中实现它？

Answer 1

您可以使用带有RouteConstraint和IP检查的catch-all路由:

确保首先放置离线路线.

routes.MapRoute("Offline", "{controller}/{action}/{id}",
                new
                    {
                        action = "Offline",
                        controller = "Home",
                        id = UrlParameter.Optional
                    },
                new { constraint = new OfflineRouteConstraint() });

和约束代码:

public class OfflineRouteConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
    {
        // return IpAddress != "1.2.3.4";
    }
}

Answer 2

Per Max的建议是实际的实施.

public class MvcApplication : System.Web.HttpApplication
{

    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new CheckForDownPage());

    }

    //the rest of your global asax
    //....
}
public sealed class CheckForDownPage : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var path = System.Web.Hosting.HostingEnvironment.MapPath("~/Down.htm");

        if (System.IO.File.Exists(path) && IpAddress != "1.2.3.4")
        {
            filterContext.HttpContext.Response.Clear();
            filterContext.HttpContext.Response.Redirect("~/Down.htm");
            return;
        }

        base.OnActionExecuting(filterContext);
    }


}