想看一下jpa的实现

[liqi19950722]

自己用jpa实现的时候遇到了问题
如何利用JPA的生命周期在A被创建出来之后 注入A的关联 Bs

@Entity
public class A{
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    private Bs bs;

    @Autowired
    @Qualifier("ABs")
    public void setBs(Bs bs) {
        this.bs = bs;
    }
}

interface Bs {
}

@Component("ABs")
class ALinkBs implements Bs {

    private Long aId;

    @Autowired
    private BRepository bRepository;

    public ALinkBs (Long aId) {
        this.aId= aId;
    }
}

@Repository
interface BRepository extends JpaRepository<B, Long> {}