网址路由规则冲突

Question

我正在我的 asp.net 应用程序中实现 URL 路由，因为我的一些规则是冲突的。 以下是我的一些冲突规则：

RouteTable.Routes.Add("QuestionSubject",
    new Route("questions/{subjectname}/{pageno}",
    new RouteValueDictionary { { "pageno", null } },
    new RouteValueDictionary { { "pageno", @"^[0-9]*$" } },
    new EventRouteHandler("~/questionsitemap/subject.aspx")));

RouteTable.Routes.Add("QuestionSubjectTopic",
    new Route("questions/{subjectname}/{topicname}/{pageno}",
    new RouteValueDictionary { { "pageno", null } },
    new RouteValueDictionary { { "pageno", @"^[0-9]*$" } },
    new EventRouteHandler("~/questionsitemap/topic.aspx")));

RouteTable.Routes.Add("QuestionGrade",
    new Route("questions/{gradename}/",
    new EventRouteHandler("~/questionsitemap/grade.aspx")));

RouteTable.Routes.Add("QuestionSubjectGrade",
    new Route("questions/{gradename}/{subjectname}/",
    new EventRouteHandler("~/questionsitemap/grade.aspx")));

RouteTable.Routes.Add("QuestionSubjectTopicGrade",
    new Route("questions/{gradename}/{subjectname}/{topicname}/",
    new EventRouteHandler("~/questionsitemap/grade.aspx")));

当我请求打开 QuestionGrade 规则时，它会调用 QuestionSubject，因为两者的规则相似，其他规则也是如此。

请任何人帮助我找出解决方案。

Answer 1

您需要使它们更具体，因为路由引擎无法区分{subjectname} 和{gradename}。您可以使用类似以下的内容，将/subject/ 和/grade/ 添加到您的路线中吗？

RouteTable.Routes.Add("QuestionSubject",
    new Route("questions/subject/{subjectname}/{pageno}",
    new RouteValueDictionary { { "pageno", null } },
    new RouteValueDictionary { { "pageno", @"^[0-9]*$" } },
    new EventRouteHandler("~/questionsitemap/subject.aspx")));

RouteTable.Routes.Add("QuestionGrade",
    new Route("questions/grade/{gradename}/",
    new EventRouteHandler("~/questionsitemap/grade.aspx")));