Spring @autowired does not work

Question

I have a problem with spring DI via annotations, here is my app:

@Service
public class Test {

    @Autowired
    private GpsPointEntityDao gpsPointEntityDao;

    public void test() {

        if (gpsPointEntityDao == null)
            System.out.println("It's null!\n" + gpsPointEntityDao);

    }
}

generic interface:

public interface GenericDao<T extends DomainObject> {

    public T find(long id);

    public List<T> getAll();

    public void save(T object) throws DataAccessException;

    public void delete(T object) throws DataAccessException;

}

concrete interface:

public interface GpsPointEntityDao extends GenericDao<GpsPointEntity> {}

abstract implementation:

abstract class AbstractGenericDaoJpa<T extends DomainObject> implements GenericDao<T> {

    private final Class<T> entityType;

    protected EntityManager entityManager;

    public AbstractGenericDaoJpa() {
        this.entityType = (Class<T>) GenericTypeResolver.resolveTypeArgument(getClass(), GenericDao.class);
    }

    @PersistenceContext
    public void setEntityManager(EntityManager entityManager) {
        this.entityManager = entityManager;
    }

    @Transactional
    @Override
    public T find(long id) {
        return entityManager.find(entityType, id);
    }

    @Transactional
    @Override
    public List<T> getAll() {
        return entityManager.createQuery("SELECT e FROM " + entityType.getName() + " e").getResultList();
    }

    @Transactional
    @Override
    public void save(T object) throws DataAccessException {
        entityManager.persist(object);
    }

    @Transactional
    @Override
    public void delete(T object) throws DataAccessException {
        entityManager.remove(object);
    }

}

concrete class:

@Repository
public class GpsPointEntityDaoJpa extends AbstractGenericDaoJpa<GpsPointEntity> implements GpsPointEntityDao {}

And my appcontext:

<context:component-scan base-package="com.test"/>

<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>

<bean id="entityManagerFactory"
      class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
      p:dataSource-ref="basicDataSource"/>

<bean id="transactionManager"
      class="org.springframework.orm.jpa.JpaTransactionManager"
      p:entityManagerFactory-ref="entityManagerFactory"/>

<tx:annotation-driven mode="proxy" transaction-manager="transactionManager"/>

<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>

The result of app is:

It's null!

I have been spending all day for searching the problem but unsuccessfully. Where someone sees a problem?

I found this message in logs:

INFO  org.springframework.context.support.ClassPathXmlApplicationContext - Bean 'entityManagerFactory' of type [class org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

Answer 1

I don't see a problem with that. With roughly the same code as you posted, I ran this:

public static void main(String[] args) {
    Test bean = new ClassPathXmlApplicationContext("/applicationContext.xml").getBean(Test.class);
    bean.test();
}

The Test bean was injected correctly. I can make my test project available if you want to take a look. Are you sure you're getting an injected version of Test? How are you obtaining it?

Edit: Your instance isn't being injected because you're instantiating it yourself instead of letting Spring do it. Unless you use AspectJ to inject objects, Spring can/will only inject objects that it is managing. When you call new Test(), you're not getting the instance from Spring, and Spring doesn't know anything about that instance you've created.