I am using springdoc-openapi and after having encountered this problem similar to the one mentioned here:
```
Description:
Parameter 0 of method linkDiscoverers in org.springframework.hateoas.config.HateoasConfiguration required a single bean, but 3 were found:
- relProviderPluginRegistry: defined by method 'relProviderPluginRegistry' in class path resource [org/springframework/hateoas/config/HateoasConfiguration.class]
- linkDiscovererRegistry: defined in null
- entityLinksPluginRegistry: defined by method 'entityLinksPluginRegistry' in class path resource [org/springframework/hateoas/config/WebMvcEntityLinksConfiguration.class]
Action:
Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed
```
I configured my Swagger file like this
```
@Configuration
@EnableHypermediaSupport(type=EnableHypermediaSupport.HypermediaType.HAL)
public class OpenApiConfig {
// ... others beans
@Bean
public LinkDiscoverers discoverers() {
List<LinkDiscoverer> plugins = new ArrayList<>();
plugins.add(new CollectionJsonLinkDiscoverer());
return new LinkDiscoverers(SimplePluginRegistry.create(plugins));
}
}
```
hope that this can't help someone
You can change your configuration class by adding the following bean
```
@Bean
public LinkDiscoverers discoverers() {
List<LinkDiscoverer> plugins = new ArrayList<>();
plugins.add(new CollectionJsonLinkDiscoverer());
return new LinkDiscoverers(SimplePluginRegistry.create(plugins));
}
```
the configuration class looks like this:
```
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket api() {
return new Docket(DocumentationType.SWAGGER_2);
}
@Bean
public LinkDiscoverers discoverers() {
List<LinkDiscoverer> plugins = new ArrayList<>();
plugins.add(new CollectionJsonLinkDiscoverer());
return new LinkDiscoverers(SimplePluginRegistry.create(plugins));
}
}
```
