Swagger UI page is found for Spring Boot 2

Question

Using Spring Boot 2.3.1.

Here is a snippet from pom:

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>${swagger-version}</version>
</dependency>

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>${swagger-version}</version>
</dependency>

Where swagger version is last for now: 3.0.0.

Swagger configuration:

@Configuration
@EnableSwagger2
public class SwaggerConfiguration {
    @Bean
    public Docket swaggerApiDocket() {
        return new Docket(DocumentationType.SWAGGER_2)
                .select()
                .paths(PathSelectors.any())
                .apis(RequestHandlerSelectors.basePackage("com.demo.controller"))
                .build()
                .apiInfo(apiDetails());
    }

    private ApiInfo apiDetails() {
        return new ApiInfo("Carpark Controller API",
                "Carpark Service for managing car parks",
                "0.0.1",
                "",
                new springfox.documentation.service.Contact("Jan",
                        "www.demo.com",
                        ""),
                "API License",
                "",
                Collections.emptyList());
    }
}

No Security configuration is added. No any server-path or some additional configuration.

When the application is up swagger JSON documentation is available:

http://localhost:8080/v2/api-docs

However, if to navigate to swagger UI:

http://localhost:8080/swagger-ui.html

The result will be:

There was an unexpected error (type=Not Found, status=404).

Tried to downgrade swagger version to 2.9.2 result is the same.

How to solve this issue?

Answer 1

Found solution for Spring Boot 2:

1. Get read from all other swagger dependencies from pom file. Only add next one:

   <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-boot-starter</artifactId>
      <version>3.0.0</version>
   </dependency>
   

Swagger configuration could be the same as it was before with @EnableSwagger2.

2. Start the application.

3. Swagger UI page is different now:

   http://localhost:8080/swagger-ui/index.html

Finally, it works!

---

Looking for a solution at the web for this issue found the following comment.

Saw the latest samples for Spring Boot version: BootWebmvcApplication

And build.gradle configuration for it.

Here is a link to other projects sources.