当 URL 中有尾随空格时，WebAPI 路由 404 [英] WebAPI route 404's when there is a trailing space in the URL

问题描述

使用默认的 web api 路由

With the default web api route

config.Routes.MapHttpRoute(
            name: "API Default",
            routeTemplate: "api/{controller}/{id}",
            defaults: new
                      {
                          id = RouteParameter.Optional
                      }
            );

还有一个控制器

public class TestController : ApiController
{
    [HttpGet]
    public HttpResponseMessage Get(string id)
    {
        return Request.CreateResponse(HttpStatusCode.OK, id);
    }
}

对'api/test/1'

返回 1

如果由于某种原因您向 'api/test/1%20' 发送请求

If for some reason you send a request to 'api/test/1%20'

404 路线.

现在这个例子可能看起来很傻，因为浏览器会修剪尾随空格，但是

Now this example may seem silly since browsers trim trailing spaces, but

对于像 'api/{controller}/{id}/{extrastuff}'这样的路由

'1 ' 中的空格将转换为 '1%20' 并且请求将在找不到路由上出现 404.

the space in '1 ' would convert to '1%20' and the request will 404 on the route not being found.

推荐答案

您的问题与 WebAPI 本身无关，而是 Asp.Net 如何处理一些特定的 url.而 Asp.Net 以非常偏执的方式处理这些 url，因此您需要告诉它 放松.

Your issue has nothing to do with WebAPI itself but how Asp.Net handles some specific urls. And Asp.Net handles these urls in a very paranoid way, so you need to tell it to relax.

在 system.web 下将此行添加到您的 web.config:

Add this line to your web.config under system.web:

<httpRuntime relaxedUrlToFileSystemMapping="true" />

您可以阅读有关此主题的更多信息:

You can read more about this topic:

• 把骗局(COM1，LPT1，NUL 等)返回您的网址

同样在 SO:

• 找不到资源."有点"时出现错误；在网址的末尾
• URL 以 %20 结尾的问题(它描述了不同的上下文，所以我不认为这是一个真正的重复)

• "The resource cannot be found." error when there is a "dot" at the end of the url
• Problem with a URL that ends with %20 (it describes a different context so I don't think that this is a real duplicate)

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