为什么springjpa不初始化lazy属性 MyChildEntity.myParentEntity （所有字段都为空）？
我试着用 Hibernate.initialize 以及 @Transactional ，但那没用。
我的服务：

@Service
@Transactional
public class MyService {

    @Resource
    private MyChildEntityRepository myChildEntityRepository;

    @Resource
    private MyParentEntityRepository myParentEntityRepository;

    @PostConstruct
    public void init() {
        MyParentEntity p = myParentEntityRepository.save(new MyParentEntity("my name"));

        myChildEntityRepository.save(new MyChildEntity(p, "first value"));
        myChildEntityRepository.save(new MyChildEntity(new MyParentEntity(1L, "another name"), "another value"));

        // At this point both MyChildEntity's are in database and have correct foreign key value
        List<MyChildEntity> result = myChildEntityRepository.findAll();
        //even this doesn't help, myParentEntity property still has all fields equals to null
        Hibernate.initialize(result.get(0).getMyParentEntity());

        MyParentEntity p2 = result.get(0).getMyParentEntity();

        //trigger proxy's method to initialize lazy field
        System.out.print(p2.getName()); // null
        System.out.println(p2.getId()); // null

        // PROBLEM: p2 has all fields equals null
        // the same for result.get(1)

        // BUT, this works correct - returns (1L, "my name") entity
        myParentEntityRepository.findAll(); 
    }
}

子实体：

@Entity
public class MyChildEntity {

    @Id
    @SequenceGenerator(sequenceName = "CHILD_SEQ", name = "ChildSeq", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "ChildSeq")
    private Long id;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "my_parent_entity_id", referencedColumnName = "id")
    private MyParentEntity myParentEntity;

    @Column
    private String value;

    // constructors, getters, setters...

父实体：

@Entity
public class MyParentEntity {

    @Id
    @SequenceGenerator(sequenceName = "WORKFLOW_SEQ", name = "WorkflowSeq", allocationSize = 1)
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "WorkflowSeq")
    private Long id;

    @Column
    private String name;

    //constructors, getters, setters...