在 ASP.NET MVC 中如何使用小写路由？

小开

当我想做同样的事情并且工作良好时，这两个教程有所帮助:

Http://www.coderjournal.com/2008/03/force-mvc-route-url-lowercase/ Http://goneale.com/2008/12/19/lowercase-route-urls-in-aspnet-mvc/

编辑: 对于带有区域的项目，需要修改 GetVirtualPath ()方法:

public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
var lowerCaseValues = new RouteValueDictionary();


foreach (var v in values)
{
switch (v.Key.ToUpperInvariant())
{
case "ACTION":
case "AREA":
case "CONTROLLER":
lowerCaseValues.Add(v.Key, ((string)v.Value).ToLowerInvariant());
break;
default:
lowerCaseValues.Add(v.Key.ToLowerInvariant(), v.Value);
break;
}
}
return base.GetVirtualPath(requestContext, lowerCaseValues);
}

小开

这实际上有两个答案:

您已经可以这样做了: 路由引擎执行不区分大小写的比较。如果键入小写路由，它将被路由到适当的控制器和操作。
如果您使用的控件生成路由链接(ActionLink、 RouteLink 等) ，它们将生成混合大小写的链接，除非您覆盖此默认行为。

不过下划线你得靠自己了。

小开

您可以使用 ActionName 属性吗？

 [ActionName("more_details")]
public ActionResult MoreDetails(int? page)
{


}

我认为大小写并不重要。 URL 中的 mOrE _ Details、 mOrE _ DETAILS、 mOrE _ DeTaILs 都会将您带到同一个 Controller Action。

小开

我在 Nick Berardi 的编码日志中找到了这个，但是它没有关于如何实现 LowercaseRoute类的信息。因此在这里重新发布附加信息。

首先将 Route类扩展到 LowercaseRoute

public class LowercaseRoute : Route
{
public LowercaseRoute(string url, IRouteHandler routeHandler)
: base(url, routeHandler) { }
public LowercaseRoute(string url, RouteValueDictionary defaults, IRouteHandler routeHandler)
: base(url, defaults, routeHandler) { }
public LowercaseRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, IRouteHandler routeHandler)
: base(url, defaults, constraints, routeHandler) { }
public LowercaseRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, RouteValueDictionary dataTokens, IRouteHandler routeHandler) : base(url, defaults, constraints, dataTokens, routeHandler) { }
public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
VirtualPathData path = base.GetVirtualPath(requestContext, values);


if (path != null)
path.VirtualPath = path.VirtualPath.ToLowerInvariant();


return path;
}
}

然后修改 Global.asax.cs 的 RegisterRoutes方法

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


routes.Add(new LowercaseRoute("{controller}/{action}/{id}",
new RouteValueDictionary(new { controller = "Home", action = "Index", id = "" }),
new MvcRouteHandler()));


//routes.MapRoute(
//    "Default",                                              // Route name
//    "{controller}/{action}/{id}",                           // URL with parameters
//    new { controller = "Home", action = "Index", id = "" }  // Parameter defaults
//);
}

但是我想知道一种使用路线的方法。

小开

如果使用 UrlHelper 生成链接，只需将操作和控制器的名称指定为小写:

itemDelete.NavigateUrl = Url.Action("delete", "photos", new { key = item.Key });

结果为:/media/photos/delete/64(即使我的控制器和操作是 pascal case)。

小开

通过将此类添加为 RouteCollection 的扩展，您可以继续使用 MapRoute 语法:

public static class RouteCollectionExtension
{
public static Route MapRouteLowerCase(this RouteCollection routes, string name, string url, object defaults)
{
return routes.MapRouteLowerCase(name, url, defaults, null);
}


public static Route MapRouteLowerCase(this RouteCollection routes, string name, string url, object defaults, object constraints)
{
Route route = new LowercaseRoute(url, new MvcRouteHandler())
{
Defaults = new RouteValueDictionary(defaults),
Constraints = new RouteValueDictionary(constraints)
};


routes.Add(name, route);


return route;
}
}

现在您可以在应用程序的启动程序中使用“ MapRouteLowerCase”而不是“ MapRoute”:

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


// Url shortcuts
routes.MapRouteLowerCase("Home", "", new { controller = "Home", action = "Index" });
routes.MapRouteLowerCase("Login", "login", new { controller = "Account", action = "Login" });
routes.MapRouteLowerCase("Logout", "logout", new { controller = "Account", action = "Logout" });


routes.MapRouteLowerCase(
"Default",                                              // Route name
"{controller}/{action}/{id}",                           // URL with parameters
new { controller = "Home", action = "Index", id = "" }  // Parameter defaults
);
}

小开

使用 System.Web.Routing 4.5，您可以直接通过设置 RouteCollection 的 LowercaseUrls 属性来实现这一点:

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


routes.LowercaseUrls = true;


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

另外，假设您这样做是出于 SEO 的原因，您希望将传入的 URL 重定向为小写(正如本文的许多链接中所说的那样)。

protected void Application_BeginRequest(object sender, EventArgs e)
{
//You don't want to redirect on posts, or images/css/js
bool isGet = HttpContext.Current.Request.RequestType.ToLowerInvariant().Contains("get");
if (isGet && !HttpContext.Current.Request.Url.AbsolutePath.Contains("."))
{
//You don't want to modify URL encoded chars (ex.: %C3%8D that's code to Í accented I) to lowercase, than you need do decode the URL
string urlLowercase = Request.Url.Scheme + "://" + HttpUtility.UrlDecode(HttpContext.Current.Request.Url.Authority + HttpContext.Current.Request.Url.AbsolutePath);
//You want to consider accented chars in uppercase check
if (Regex.IsMatch(urlLowercase, @"[A-Z]") || Regex.IsMatch(urlLowercase, @"[ÀÈÌÒÙÁÉÍÓÚÂÊÎÔÛÃÕÄËÏÖÜÝÑ]"))
{
//You don't want to change casing on query strings
urlLowercase = urlLowercase.ToLower() + HttpContext.Current.Request.Url.Query;


Response.Clear();
Response.Status = "301 Moved Permanently";
Response.AddHeader("Location", urlLowercase);
Response.End();
}
}
}

小开

如果您碰巧使用 ASP.NET Core，那么您可能应该看一下这个:

将以下代码行添加到 Startup类的 ConfigureServices方法。
services.AddRouting(options => options.LowercaseUrls = true);