Add support for addPathPrefix with Webflux swagger-ui

[shota-hizawa-reazon]

Describe the Feature
When we use WebFluxConfigurer to set base-path, it's unable to access http://server:port/context-path/swagger-ui.html.
We can access to http://server:port/context-path/v3/api-doc though.

WebfluxConfigurer

@Configuration
@EnableWebFlux
class WebFluxConfiguration : WebFluxConfigurer {

    override fun configurePathMatching(configurer: PathMatchConfigurer) {
        configurer.addPathPrefix("/api/v1") { true }
    }
}

In this case, context-path should be replaced with /api/v1, so we should see swagger-ui at http://server:port/api/v1/swagger-ui.html.

It seems like that context-path is not loaded when generating the url of springdoc-config, because we can access to http://server:port/api/v1/v3/api-docs/swagger-config.

To Reproduce
Steps to reproduce the behavior:

• What version of spring-boot you are using?
  Running with Spring Boot v2.4.0, Spring v5.3.1

• What modules and versions of springdoc-openapi are you using?
  Using springdoc-openapi-webflux-ui v1.5.2 with springdoc-openapi-kotlin v.1.5.2

• Provide with a sample code (HelloController) or Test that reproduces the problem
  I put a sample code to set context-path by WebFluxConfigurer above. so please refer that.

Expected behavior
We should be able to access swagger-ui.html

[bnasslahsen]

@shota-hizawa-reazon,

This seems to be a dupblicate of #1034.
Have you tested with the latest stable release: v1.5.3 ?

[shota-hizawa-reazon]

@bnasslahsen,

I've tested v1.5.3 now, but I got the same error as #1047.

Description:

Parameter 3 of method swaggerWelcome in org.springdoc.webflux.ui.SwaggerConfig required a bean of type 'org.springframework.boot.autoconfigure.web.reactive.WebFluxProperties' that could not be found.


Action:

Consider defining a bean of type 'org.springframework.boot.autoconfigure.web.reactive.WebFluxProperties' in your configuration.

As you say, the problem itself seems to be a duplicate of #1037, so I close this.
Thank you for your quick reply!

[shota-hizawa-reazon]

I tried springdoc-openapi-webflux-ui: v1.5.4, but I'm still unable to access to Swagger UI with base-path settings.

@Configuration
@EnableWebFlux
class WebFluxConfiguration : WebFluxConfigurer {

    override fun configurePathMatching(configurer: PathMatchConfigurer) {
        configurer.addPathPrefix("/api/v1") { true }
    }

In my WebFluxConfigurer, I set the base-path to /api/v1.
Then, I opened http://localhost:<PORT>/api/v1/swagger-ui.html, however, the page shows error and console also shows errors.

If I comment out the base-path settings shown above, and open http://localhost:<PORT>/swagger-ui.html, it works.

Anything I’m missing?

[bnasslahsen]

@shota-hizawa-reazon,

This seems a different problem, as you are setting the path prefix using addPathPrefix.
This one is not supported yet.

[bnasslahsen]

@shota-hizawa-reazon,

The support is now added.
You can test it using the latest snapshot.

[shota-hizawa-reazon]

@bnasslahsen,

I've tested with the latest of 1.5.5-SNAPSHOT, and it works.
Thank you so much!