c# - 网址路由规则冲突

Question

我在我的 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")));

在此，当我请求打开 QuestionGrade 规则时，它调用了 QuestionSubject，因为两者的规则相似，其他规则也发生了同样的情况。

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}。你可以使用类似下面的东西，将 /subject/ 和 /grade/ 添加到你的路线吗？

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")));