我试图在Traefik的文件提供程序中实现一个基本的重定向。我希望有以下几点：

http://example.com/foobar      ->  https://foobar.example.com
http://www.example.com/foobar  ->  https://foobar.example.com
https://example.com/foobar     ->  https://foobar.example.com
https://www.example.com/foobar ->  https://foobar.example.com

以下是我的尝试：

http:
  middlewares:
    redirect-foobar:
      redirectRegex:
        permanent: true
        regex: "^https?://(www\\.)?example\\.com/foobar(/?.*)"
        replacement: "https://foobar.example.com${2}"
  routers:
    catch-foobar:
      middlewares:
        - redirect-foobar
      rule: Host(`example.com`) || Host(`www.example.com`)
      service: noop@internal

但当我尝试的时候，我得到的是：

$ curl -I http://www.example.com/foobar 
HTTP/1.1 308 Permanent Redirect
Location: https://foobar.example.com
Date: Wed, 02 Mar 2022 02:12:48 GMT
Content-Length: 18
Content-Type: text/plain; charset=utf-8
# That's good =)

$ curl -I https://www.example.com/foobar
HTTP/2 404 
content-type: text/plain; charset=utf-8
x-content-type-options: nosniff
content-length: 19
date: Wed, 02 Mar 2022 02:05:22 GMT
# Does that mean the request didn't even make it to the catch-foobar router?

我做错了什么？任何帮助都将不胜感激。

谢谢,

C

编辑:修正了regex，但是https大小写仍然有问题。