Generic jpa repository with spring boot

Question

I'm trying to use generic Jpa Specification with spring boot but this problem was appeared.

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-05-23 18:18:27.340 ERROR 1048 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaSpecificationRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class java.lang.Object.

in my code I'm trying to use module concept, so I have 5 module (entities, dao, service, web and frontend with angular) so this is my code:

My generic Jpa Specification interface.

public interface JpaSpecificationRepository<T, ID extends Serializable>
        extends JpaRepository<T, ID>, JpaSpecificationExecutor<T> {

}

Exemple of repository.

public interface HelloRepository extends JpaSpecificationRepository<Hello, Long> {

}

The service

@Service
public class HelloServiceImpl extends AbstractCRUDService<Hello, Long, HelloDto> {

    @Autowired
    protected HelloServiceImpl(HelloRepository repository, DozerBeanMapper mapper) {
        super(repository, mapper, Hello.class, HelloDto.class);
    }
}

and the controller

@RestController
@CrossOrigin("*")
@RequestMapping("/hello")
public class HelloController extends AbstractCRUDBackOfficeController<Long, HelloDto> {

    @Autowired
    HelloController(HelloServiceImpl service) {
        super(service);
    }
}

Answer 1

add @NoRepositoryBean to your JpaSpecificationRepository so you can exclude this Repository from being instantiated.