ASP.NET MVC 5 中的路由可选参数 [英] Routing optional parameters in ASP.NET MVC 5

问题描述

我正在创建一个 ASP.NET MVC 5 应用程序，但我在路由方面遇到了一些问题.我们使用属性 Route 来映射 Web 应用程序中的路由.我有以下操作:

I am creating an ASP.NET MVC 5 application and I have some issues with routing. We are using the attribute Route to map our routes in the web application. I have the following action:

[Route("{type}/{library}/{version}/{file?}/{renew?}")]
public ActionResult Index(EFileType type, 
                          string library, 
                          string version, 
                          string file = null, 
                          ECacheType renew = ECacheType.cache)
{
 // code...
}

我们只有在url的末尾传递斜线字符/才能访问这个URL，像这样:

We only can access this URL if we pass the slash char / in the end of url, like this:

type/lib/version/file/cache/

它工作正常，但没有 / 就不能工作，我得到一个 404 not found 错误，就像这样

It works fine but does not work without /, I get a 404 not found error, like this

type/lib/version/file/cache

或者这个(没有可选参数):

or this (without optional parameters):

type/lib/version

我想在 url 的末尾使用或不使用 / 字符进行访问.我的最后两个参数是可选的.

I would like to access with or without / char at the end of url. My two last parameters are optional.

我的RouteConfig.cs是这样的:

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

        routes.MapMvcAttributeRoutes();
    }
}

我该如何解决?使斜杠 / 也是可选的吗?

How can I solve it? Make the slash / be optional too?

推荐答案

也许您应该尝试将枚举改为整数?

Maybe you should try to have your enums as integers instead?

我就是这样做的

public enum ECacheType
{
    cache=1, none=2
}

public enum EFileType 
{
    t1=1, t2=2
}

public class TestController
{
    [Route("{type}/{library}/{version}/{file?}/{renew?}")]
    public ActionResult Index2(EFileType type,
                              string library,
                              string version,
                              string file = null,
                              ECacheType renew = ECacheType.cache)
    {
        return View("Index");
    }
}

还有我的路由文件

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

    // To enable route attribute in controllers
    routes.MapMvcAttributeRoutes();

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

然后我可以像这样拨打电话

I can then make calls like

http://localhost:52392/2/lib1/ver1/file1/1
http://localhost:52392/2/lib1/ver1/file1
http://localhost:52392/2/lib1/ver1

或

http://localhost:52392/2/lib1/ver1/file1/1/
http://localhost:52392/2/lib1/ver1/file1/
http://localhost:52392/2/lib1/ver1/

它工作正常......

and it works fine...

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