ASP.NET MVC路由与＆QUOT;文件扩展名＆QUOT; [英] ASP.NET MVC Routes with "File Extensions"

问题描述

我想打一个MVC路线的新闻列表，可以在多种格式送达。

• 新闻中心 - >（X）HTML


• news.rss - > RSS


• news.atom - > ATOM

是否有可能做到这一点（更普遍的可选扩展的情况在好几个地方在我的计划中设计了作物）一个路线？或做我需要做这样的两条路线：

  routes.MapRoute（新闻ImplicitFormat
                新闻，
                新{控制器=新闻，行动=浏览，格式=}）;routes.MapRoute（新闻ExplicitFormat
                的新闻。{}格式
                新{控制器=新闻，行动=浏览}）;
 

看起来这将是非常有用的路由系统的支持是这样的：

  routes.MapRoute（新闻报，
                新闻（{}格式）？
                新{控制器=新闻，行动=浏览}）;
 

解决方案

我做了一个方法来支持添加对这样如下：

 公共静态无效MapRouteWithOptionalFormat（这RouteCollection路线，
                                              字符串名称，
                                              字符串的URL，
                                              对象的默认值）
{
    路线implicitRoute = routes.MapRoute（名称+-ImplicitFormat
                                          URL，
                                          默认值）;
    implicitRoute.Defaults.Add（格式的String.Empty）;    路线explicitRoute = routes.MapRoute（名称+-ExplicitFormat
                                          网址+。{}格式，
                                          默认值）;
}
 

I want to make an MVC route for a list of news, which can be served in several formats.

• news -> (X)HTML
• news.rss -> RSS
• news.atom -> ATOM

Is it possible to do this (the more general "optional extension" situation crops up in several places in my planned design) with one route? Or do I need to make two routes like this:

routes.MapRoute("News-ImplicitFormat",
                "news",
                new { controller = "News", action = "Browse", format = "" });

routes.MapRoute("News-ExplicitFormat",
                "news.{format}"
                new { controller = "News", action = "Browse" });

It seems like it would be useful to have the routing system support something like:

routes.MapRoute("News",
                "news(.{format})?",
                new { controller = "News", action = "Browse" });

解决方案

I made a method to support adding pairs like this as follows:

public static void MapRouteWithOptionalFormat(this RouteCollection routes,
                                              string name,
                                              string url,
                                              object defaults)
{
    Route implicitRoute = routes.MapRoute(name + "-ImplicitFormat",
                                          url,
                                          defaults);
    implicitRoute.Defaults.Add("format", string.Empty);

    Route explicitRoute = routes.MapRoute(name + "-ExplicitFormat",
                                          url + ".{format}",
                                          defaults);
}

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