https://docs.spring.io/spring-framework/reference/web/webflux/controller/ann-requestmapping.html

{*path}
Matches zero or more path segments until the end of the path
and captures it as a variable named "path"

"/resources/{file}" matches "/resources/images/file.png" and captures file=/images/file.png

Perhaps it could be used at first of the url: /{**path}/products/.....