asp.net-mvc - 如何通过URL获取RouteData？

Question

我需要通过ASP.NET MVC应用程序中给定的URL字符串来获取RoutData。

我已经找到了根据我的URL字符串模拟HttpContextBase并将其传递给Route Parsing (Uri to Route)线程中的RouteTable.Routes.GetRouteData()方法的方式。

如何模拟HttpContextBase以使用RouteData通过URL字符串检索RouteTable.Routes.GetRouteData()？
还是有另一种通过URL检索RouteData的方法？

Answer 1

我使用Moq来确定HttpContextBase中使用了哪些GetRouteData()成员。他们是:

请求

AppRelativeCurrentExecutionFilePath

PathInfo

Request.AppRelativeCurrentExecutionFilePath应该返回 ~，这正是我真正需要的路径，因此实用程序类可能像这样:

public static class RouteUtils
{
    public static RouteData GetRouteDataByUrl(string url)
    {
        return RouteTable.Routes.GetRouteData(new RewritedHttpContextBase(url));
    }

    private class RewritedHttpContextBase : HttpContextBase
    {
        private readonly HttpRequestBase mockHttpRequestBase;

        public RewritedHttpContextBase(string appRelativeUrl)
        {
            this.mockHttpRequestBase = new MockHttpRequestBase(appRelativeUrl);
        }


        public override HttpRequestBase Request
        {
            get
            {
                return mockHttpRequestBase;
            }
        }

        private class MockHttpRequestBase : HttpRequestBase
        {
            private readonly string appRelativeUrl;

            public MockHttpRequestBase(string appRelativeUrl)
            {
                this.appRelativeUrl = appRelativeUrl;
            }

            public override string AppRelativeCurrentExecutionFilePath
            {
                get { return appRelativeUrl; }
            }

            public override string PathInfo
            {
                get { return ""; }
            }
        }
    }
}

然后，您可以像这样使用它(例如 ~/Error/NotFound):

var rd = RouteUtils.GetRouteDataByUrl("~/Error/NotFound")

哪个应该返回如下所示的对象:

RouteData.Values
{
    controller = "Error",
    action = "NotFound"
}