如何使用 springboot 1.5.x 配置“hibernate.integrator_provider”

hsc*_*hsc 4 hibernate jpa spring-boot

我正在使用 springboot 1.5.x 并尝试按照教程实现事件侦听器。

我遇到的阻碍是我不能用SpringBoot 1.5.x设置hibernate integrator?我试图properties.yml像下面的代码一样配置积分器,但它抛出了一个无法将字符串转换为积分器的异常:

spring:
  jpa:
    properties:
      hibernate.integrator_provider: com.xxxxx.RootAwareEventListenerIntegrator
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是一个相关的问题,但提供的解决方案不适用于 springBoot 1.5.x。

hsc*_*hsc 7

我从这里找到了一个可用的解决方案。它不使用集成器,而是将所有事件侦听器一一添加。下面是我的代码:

public class RootAwareInsertEventListener implements PersistEventListener {

    public static final RootAwareInsertEventListener INSTANCE = new RootAwareInsertEventListener();

    @Override
    public void onPersist(PersistEvent event) throws HibernateException {
        final Object entity = event.getObject();

        if (entity instanceof RootAware) {
            RootAware rootAware = (RootAware) entity;
            Object root = rootAware.getRoot();
            event.getSession().lock(root, LockMode.OPTIMISTIC_FORCE_INCREMENT);

            log.info("Incrementing {} entity version because a {} child entity has been inserted",
                    root, entity);
        }
    }

    @Override
    public void onPersist(PersistEvent event, Map createdAlready)
            throws HibernateException {
        onPersist(event);
    }
}
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@Component
public class HibernateListenerConfigurer {

    @PersistenceUnit
    private EntityManagerFactory emf;

    @PostConstruct
    protected void init() {
        SessionFactoryImpl sessionFactory = emf.unwrap(SessionFactoryImpl.class);
        EventListenerRegistry registry = sessionFactory.getServiceRegistry().getService(EventListenerRegistry.class);
        registry.getEventListenerGroup(EventType.PERSIST).appendListener(RootAwareInsertEventListener.INSTANCE);
        registry.getEventListenerGroup(EventType.FLUSH_ENTITY).appendListener(RootAwareUpdateAndDeleteEventListener.INSTANCE);

    }
}
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