如何处理带有图像扩展的路由

Question

I have action:

public ActionResult Thumbnail(string image)
{
     return GetThumbnail(image);
}

I am trying to access it with the next request:

http://localhost:60955/thumbnail/imagename.png

In config I have:

<add name="Png" path="/thumbnail/*.png" verb="GET" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />

And in routes configuration:

routes.MapRoute(
    name: "Thumbnail",
    url: "thumbnail/{*image}",
    defaults: new { controller = "Image", action = "Thumbnail" }
);

So it works for the above image URL. But I need this to work for any subfolder and the following returns 404:

http://localhost:60955/thumbnail/screenshots/imagename.png

And when I add slash it works again:

http://localhost:60955/thumbnail/screenshots/imagename.png/

Can I make it work with no trailing slash? I feel like I need to customize the handler path in the config but cannot figure out how.

Answer 1

You should use query string for this case

URL change to this

http://localhost:60955/thumbnail?image=screenshots/imagename.png