Asp.net MVC 5 MapRoute 用于多个路由

Question

我在 RouteConfig 中有 3 条路由:

routes.MapRoute(
    name: "ByGroupName",
    url: "catalog/{categoryname}/{groupname}",
    defaults: new { controller = "Catalog", action = "Catalog" }
);
routes.MapRoute(
    name: "ByCatName",
    url: "catalog/{categoryname}",
    defaults: new { controller = "Catalog", action = "Catalog" }
);
routes.MapRoute(
    name: "ByBrandId",
    url: "catalog/brand/{brandId}",
    defaults: new { controller = "Catalog", action = "Catalog" }
);

这是我接收参数的 Action Controller :

public ActionResult Catalog(
    string categoryName = null,
    string groupName = null,
    int pageNumber = 1,
    int orderBy = 5,
    int pageSize = 20,
    int brandId = 0,
    bool bundle = false,
    bool outlet = false,
    string query_r = null)
{
// ...
}

当我在 View 中使用 @Url.RouteUrl("ByBrandId", new {brandId = 5}) 的链接时，我在 Action 中得到参数“categoryname”=“brand”和brandId =0 而不是只有brandId=5...

当我使用“ByBrandId”routeurl调用“http://localhost:3453/catalog/brand/5”时，我想在actioncontroller中获取brandId=5...，相当于“http://localhost:3453/catalog/Catalog?brandId=1”

谢谢

Answer 1

您的路由配置错误。如果您传递 URL /Catalog/brand/something，它将始终匹配 ByGroupName 路由，而不是预期的 ByBrandId 路线。

首先，你应该纠正一下顺序。而且，除了可选的组名称之外，前 2 条路由完全相同，因此您可以简化为:

routes.MapRoute(
    name: "ByBrandId",
    url: "catalog/brand/{brandId}",
    defaults: new { controller = "Catalog", action = "Catalog" }
);
routes.MapRoute(
    name: "ByGroupName",
    url: "catalog/{categoryname}/{groupname}",
    defaults: new { controller = "Catalog", action = "Catalog", groupname = UrlParameter.Optional }
);

现在，当您使用 @Url.RouteUrl("ByBrandId", new {brandId = 5}) 时，它应该为您提供预期的输出 /catalog/brand/5 .

参见Why map special routes first before common routes in asp.net mvc以获得完整的解释。