1

我的 global.asax 中有这个 MapPageRoute：

RouteTable.Routes.MapPageRoute("TestPages", "{file}", "~/Test/{file}");

它基本上说如果请求来自任何文件，它会进入测试文件夹。但是我想限制它，以便仅当 URL 中不存在 asp 扩展名时才执行此规则。因此，如果用户键入 Test.asp，则不应发生 URL 路由。但如果它http://www.something.com/Test/应该执行类似这条路线的东西。

我怎样才能做到这一点？

4

2 回答 2

2

为此，我使用了约束。例子：

routes.MapPageRoute("CMS", "{*friendlyUrl}", "~/index.aspx", true, null, new RouteValueDictionary { { "incomingUrl", new CatchallConstraint() } });

其中 CatchallContraint 是一个必须实现 IRouteConstraint 的类。

在 Match 方法中，只需检查文件扩展名，如果是 asp 扩展名则返回 false。

这是我的实现（vb.net）——它比你需要的多一点，因为它可以在 web.config 中配置，但你明白了。

公共类 CatchallConstraint 实现 System.Web.Routing.IRouteConstraint

''' <summary>
''' If AppSettings: CatchallIgnoredExtensions doesn't exist, these are the default extensions to ignore in the catch-all route
''' </summary>
''' <remarks></remarks>
Public Const DefaultIgnoredExtensions As String = ".jpg,.gif,.png"

''' <summary>
''' For the catch-all route, checks the AppSettings: CatchallIgnoredExtensions to determine if the route should be ignored.
''' Generally this is for images - if we got to here that means the image was not found, and there's no need to follow this route
''' </summary>
Public Function Match(ByVal httpContext As System.Web.HttpContextBase, ByVal route As System.Web.Routing.Route, ByVal parameterName As String, ByVal values As System.Web.Routing.RouteValueDictionary, ByVal routeDirection As System.Web.Routing.RouteDirection) As Boolean Implements System.Web.Routing.IRouteConstraint.Match
    If routeDirection = Routing.RouteDirection.IncomingRequest Then
        Dim friendlyUrl As String = Nothing
        If values.TryGetValue("friendlyUrl", friendlyUrl) AndAlso Not String.IsNullOrEmpty(friendlyUrl) Then
            If friendlyUrl.Contains(".") Then
                Dim catchallIgnoredExtensions As String = ConfigurationManager.AppSettings("CatchallIgnoredExtensions")
                ' only set defaults if the setting is not found - user may not want to ignore any extensions
                If catchallIgnoredExtensions Is Nothing Then
                    catchallIgnoredExtensions = DefaultIgnoredExtensions
                End If
                ' replace spaces and period to standardize, surround the extensions in commas for searching
                catchallIgnoredExtensions = "," & catchallIgnoredExtensions.Replace(" ", "").Replace(".", "").ToLowerInvariant() & ","
                Dim extension As String = System.IO.Path.GetExtension(friendlyUrl).Replace(".", "")
                If catchallIgnoredExtensions.Contains("," & extension & ",") Then
                    Return False
                End If
            End If
        End If
    End If
    Return True
End Function

结束类

于 2012-04-19T13:16:19.827 回答
2

要忽略路由，请尝试使用以下命令：

RouteTable.Routes.Ignore("{resource}.asp/{*pathInfo}");

将“.asp”更改为要过滤的类型。

于 2012-04-19T13:52:32.120 回答