When I run Cobertura, it causes the following Spring autowiring error:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userResource': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.dnb.components.storage.service.UserService com.dnb.components.storage.rest.resource.UserResource.userService; nested exception is java.lang.IllegalArgumentException: Can not set com.dnb.components.storage.service.UserService field com.dnb.components.storage.rest.resource.UserResource.userService to com.sun.proxy.$Proxy56 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
As suggested in other related posts, I tried forcing Spring to use CGLIB by changing "proxyTargetClass=true", but this results in a different error:
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userResource': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.dnb.components.storage.service.UserService com.dnb.components.storage.rest.resource.UserResource.userService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dnb.components.storage.repository.UserRepository com.dnb.components.storage.service.UserService.repository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Post-processing of the FactoryBean's object failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.sun.proxy.$Proxy54]: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class class com.sun.proxy.$Proxy54
This is what the Repository class looks like:
@Transactional
public interface UserRepository extends CrudRepository<User, Long> {
public User findByCrmId(String crmIdId);
}
Here is the service that gets injected with UserRepository:
@Service
@Transactional
public class UserService extends TraceablePersistenceService<User, UserRepository> {
@Autowired
UserRepository repository;
@Transactional
public Iterable<User> findAll() {
return repository.findAll();
}
public User findOne(Long id) {
return repository.findOne(id);
}
}
Our configuration is in
@Configuration
@EnableTransactionManagement(proxyTargetClass=true)
@EnableJpaRepositories(basePackages = {"com.dnb.components.storage.repository"})
@Profile("inmemory")
public class InMemoryStandaloneStorageConfig extends BasicJpaStorageConfig {
....
(omitted for brevity)
UserResource.java:
@Component
@Path(UserResource.uri)
public class UserResource extends AbstractResource {
public final static String uri = BASE_URI + "/users";
@Override
public String getURI() {
return BASE_URI + uri;
}
@Autowired
private UserService userService;
...
It seems that the Spring Data JPA generated Repository class cannot be proxied either way without screwing up the auto-wiring.
Is there a fix for this? Is it even a good idea to annotate Repository methods with @Transactional? Should the annotation be at the service level only?