Issue Description: Swagger UI not accessible with Spring WebFlux

[danielbradea]

Summary: I've encountered an issue where Swagger UI is not accessible in my Spring WebFlux application despite configuring it with springdoc-openapi-starter-webflux-api.

Steps to Reproduce:

Set up a Spring WebFlux project.
Include springdoc-openapi-starter-webflux-api dependency.
Start the application.
Attempt to access Swagger UI via http://localhost:8080/swagger-ui.html.

Expected Behavior: I expect Swagger UI to be accessible, allowing me to interact with the API documentation.

Actual Behavior: When trying to access http://localhost:8080/swagger-ui.html, I receive a 404 error indicating that the resource cannot be found.

Additional Information:

The OpenAPI JSON documentation endpoint (http://localhost:8080/v3/api-docs) returns the expected API documentation.
I've verified the configuration and dependencies, and they seem to be correct.
There are no relevant errors or warnings in the application logs.

Environment:

Spring Boot version: 3.3.0
springdoc-openapi-starter-webflux-api version: 2.5.0
Java version: 17

[makhtardiouf]

Hello @danielbradea. How did you resolve this issue ? For the me the ui loads, but without any documentation generated for my controllers .

[dreamstar-enterprises]

I have the same issue. OpenDocs loads, http://localhost:8080/v3/api-docs, but not http://localhost:8080/swagger-ui.html - it keeps saying 404 not found

[ApacheScribe]

Hi, I got it to work with the following pom.xml:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>3.2.10</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>

17 3.0.5 jacoco reuseReports ${project.basedir}/target/jacoco.exec 2023.0.1 1.5.3.Final org.springframework.boot spring-boot-starter-webflux org.yaml snakeyaml org.yaml snakeyaml 2.0 org.springdoc springdoc-openapi-starter-webflux-ui 2.2.0 org.springframework.boot spring-boot-starter-actuator org.springframework.boot spring-boot-starter-data-redis-reactive org.springframework.boot spring-boot-starter-validation org.springframework.boot spring-boot-starter-mail io.micrometer micrometer-registry-prometheus runtime org.bouncycastle bcprov-jdk18on 1.78 jakarta.xml.bind jakarta.xml.bind-api 4.0.0 jakarta.xml.soap jakarta.xml.soap-api 3.0.0 jakarta.activation jakarta.activation-api 2.1.1 com.sun.xml.messaging.saaj saaj-impl 3.0.1 org.glassfish.jaxb jaxb-runtime 3.0.2 org.webjars webjars-locator-core com.icegreen greenmail 2.0.1 org.springframework.cloud spring-cloud-starter-bootstrap org.bouncycastle bcprov-jdk18on org.springframework.cloud spring-cloud-starter-config org.bouncycastle bcprov-jdk15on org.springframework.boot spring-boot-configuration-processor true org.projectlombok lombok true org.mapstruct mapstruct ${org.mapstruct.version} com.github.loki4j loki-logback-appender 1.5.1 com.github.ulisesbocchio jasypt-spring-boot-starter ${jasypt.version} org.springframework.boot spring-boot-starter-test test io.projectreactor reactor-test test

No extra configurations or class annotations. I didn't even add the @EnableSwagger... something to the @springbootapplication class. I don't know where the bug is but this seemed to work. If you have any other questions about another part of my setup, I'd be happy to answer.

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