如何使用破折号制作 MVC 路由句柄 url

Question

我在 MVC 中定义了如下路由：

routes.MapRoute(
   name: "ContentNavigation",
   url: "{viewType}/{category}-{subCategory}",
   defaults: new { controller = "Home", action = "GetMenuAndContent", viewType = String.Empty, category = String.Empty, subCategory = String.Empty });

如果我导航到 http://example.com/something/category-and-this-is-a-subcategory

它将变量填充为：

viewType: "something"
category: "category-and-this-is-a"
subCategory: "subcategory".

我想要的是第一个破折号之前的词始终进入类别，而其余的进入 子类别。所以它会产生：

viewType: "something"
category: "category"
subCategory: "and-this-is-a-subcategory"

我怎样才能做到这一点？

Answer 1

一种可能性是编写自定义路由来处理路由段的正确解析：

public class MyRoute : Route
{
    public MyRoute()
        : base(
            "{viewType}/{*catchAll}",
            new RouteValueDictionary(new 
            {
                controller = "Home",
                action = "GetMenuAndContent",
            }),
            new MvcRouteHandler()
        )
    {
    }

    public override RouteData GetRouteData(HttpContextBase httpContext)
    {
        var rd = base.GetRouteData(httpContext);
        if (rd == null)
        {
            return null;
        }

        var catchAll = rd.Values["catchAll"] as string;
        if (!string.IsNullOrEmpty(catchAll))
        {
            var parts = catchAll.Split(new[] { '-' }, 2, StringSplitOptions.RemoveEmptyEntries);
            if (parts.Length > 1)
            {
                rd.Values["category"] = parts[0];
                rd.Values["subCategory"] = parts[1];
                return rd;
            }
        }

        return null;
    }
}

您将这样注册：

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.Add("ContentNavigation", new MyRoute());

    ...
}

现在假设客户端请求 /something/category-and-this-is-a-subcategory，那么将调用以下控制器操作：

public class HomeController : Controller
{
    public ActionResult GetMenuAndContent(string viewType, string category, string subCategory)
    {
        // viewType = "something"
        // category = "category"
        // subCategory = "and-this-is-a-subcategory"

        ...
    }
}

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