c# - .NET MVC 路由 - 路由开始时的包罗万象？

Question

有什么方法可以匹配:

/a/myApp/Feature

/a/b/c/myApp/Feature

/x/y/z/myApp/Feature

有一条路线不知道 myApp/Feature 之前的路径是什么？

我本质上想做的是:

RouteTable.Routes.MapRoute(
  "myAppFeatureRoute", "{*path}/myApp/Feature",
  new { controller = "myApp", action = "Feature" });

但是你不能在路线的起点放置一个 catchall。

如果我只是尝试“{path}/myApp/Feature”，它将匹配“/a/myApp/Feature”而不是“/a/b/c/myApp/Feature”。

我也尝试了一个正则表达式包罗万象，但没有任何帮助。

RouteTable.Routes.MapRoute(
  "myAppFeatureRoute", "{path}/myApp/Feature",
  new { controller = "myApp", action = "Feature", path = @".+" });

我这样做的原因是我正在构建一个在 CMS 中使用的功能，并且可以位于站点结构中的任何位置 - 我只能确定路径的终点，而不是起点。

Answer 1

你可以为此使用约束，

public class AppFeatureUrlConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
    {
        if (values[parameterName] != null)
        {
            var url = values[parameterName].ToString();
            return url.Length == 13 && url.EndsWith("myApp/Feature", StringComparison.InvariantCultureIgnoreCase) ||
                    url.Length > 13 && url.EndsWith("/myApp/Feature", StringComparison.InvariantCultureIgnoreCase);
        }
        return false;
    }
}

将其用作，

routes.MapRoute(
    name: "myAppFeatureRoute",
    url: "{*url}",
    defaults: new { controller = "myApp", action = "Feature" },
    constraints: new { url = new AppFeatureUrlConstraint() }
    );

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

那么下面的url应该被Feature action拦截

/a/myApp/Feature

/a/b/c/myApp/Feature

/x/y/z/myApp/Feature

希望这对您有所帮助。