在仍返回LazyInitializationException的事务中运行惰性集合

Question

@Entity
@Table(name = "Product")
public class Product {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "idproduct")
    private Long idProduct;

@OneToMany(mappedBy = "product", cascade = CascadeType.ALL, orphanRemoval = true)
    Set<CommercialePieceItem> commercialePieceItems = new HashSet<>();

    }

我已经尝试了很多次初始化惰性集合的方法，但没有任何效果

1尝试：

 @Autowired
    EntityManagerFactory emf;


  EntityManager entityManager = emf.createEntityManager() ;
                entityManager.getTransaction().begin();
                entityManager.merge(product);
                int qty = product.getCommercialePieceItems().size() ;
                entityManager.getTransaction().commit();
                entityManager.close(); ;

At线

 TransactionTemplate transactionTemplate = new TransactionTemplate(platformTransactionManager) ; 
                transactionTemplate.execute(new TransactionCallback<Object>() {
                    @Override
                    public Object doInTransaction(TransactionStatus transactionStatus) {
                        Hibernate.initialize(product.getCommercialePieceItems());
                        return null;
                    }
                });

@Service
public class DatabaseService {

 @Transactional
    public void initializeLazyObject(Object objects) {
        Hibernate.initialize(objects);


    }
}
@Autowired
DatabaseService databaseservice ; 

databaseservice.initializeLazyObject(product.getCommercialePieceItems()) ; 

Answer 1

entityManager.merge(product);

product = entityManager.merge(product);