Custom default headers for REST API only using Spring Data REST

Question

I have a use case where my application hosts REST API and web application and we need to add custom header to REST APIs only. REST APIs are enabled through Spring Data REST.

Answer 1

Finally I managed to make the setup of custom interceptor working also on spring-data-rest 2.4.1.RELEASE.

@Configuration
public class RestMvcConfig extends RepositoryRestMvcConfiguration {

    @Autowired UserInterceptor userInterceptor;

    @Autowired ApplicationContext applicationContext;

    @Override
    public DelegatingHandlerMapping restHandlerMapping() {

        RepositoryRestHandlerMapping repositoryMapping = new RepositoryRestHandlerMapping(resourceMappings(), config());
        repositoryMapping.setInterceptors(new Object[] { userInterceptor }); // FIXME: not nice way of defining interceptors
        repositoryMapping.setJpaHelper(jpaHelper());
        repositoryMapping.setApplicationContext(applicationContext);
        repositoryMapping.afterPropertiesSet();

        BasePathAwareHandlerMapping basePathMapping = new BasePathAwareHandlerMapping(config());
        basePathMapping.setApplicationContext(applicationContext);
        basePathMapping.afterPropertiesSet();

        List mappings = new ArrayList();
        mappings.add(basePathMapping);
        mappings.add(repositoryMapping);

        return new DelegatingHandlerMapping(mappings);  
    }

}

I had to override the restHandlerMapping method, copy-paste it's content and add a line repositoryMapping.setInterceptors for adding custom interceptor, in my case the UserInterceptor.

Is there any better way?