Regression after version 1.6.9 spring.webflux.base-path repeats on page reload

[vladgon]

**When using spring.webflux.base-path, the prefix multiply on each page reload **

• This issue appears when server is explicitly set e.g. localhost and spring.webflux.base-path is set. This is a regression still not fixed in 1.6.11, works fine in 1.6.9
  tested with Springboot version 2.7.3

To Reproduce
Steps to reproduce the behavior:

• Set the spring.webflux.base-path and reload the page, the operation path grows with each reload

[bnasslahsen]

@vladgon,

Shoud be same root cause as #1820

[vladgon]

in this case the operation path grows on each refresh e.g.
prefix/op/get
prefix/prefix/op/get
prefix/prefix/prefix/op/get

[bnasslahsen]

@vladgon,

Not reproducible.
Are you able to Provide a Minimal, Reproducible Example - with HelloController that reproduces the problem ?

[vladgon]

The issue is in OpenApiCustomiser is invoked on every page refresh after version 1.6.9 and before was invoked on startup only once.

Please see sample code in https://github.com/vladgon/SpringDoc

@Bean
OpenApiCustomiser openApiCustomiser(@Value("${spring.webflux.base-path}") String base) {
 return openApi -> openApi.setPaths(openApi.getPaths()
                                               .entrySet()
                                               .stream()
                                               .reduce(new Paths(),
                                                       (paths, item) -> paths.addPathItem(
                                                               java.nio.file.Paths.get(base, item.getKey())
                                                                                  .toString(),
                                                               item.getValue()),
                                                       (paths, paths2) -> paths));
 }

[bnasslahsen]

@vladgon,

Good that you have added the sample.
It's confirmed that it's the same root cause: OpenApiCustomiser...
So it's duplicate of #1820.

Don't hesitate to test it with the latest SNAPSHOT and provide your feedback.