如何在“SpringDataJPA”中使用java代码设置默认实体侦听器？

我可以设置默认实体侦听器使用

persistence.xml

如何在

spring数据jpa

中设置默认实体侦听器使用java代码

---

我想动态设置实体侦听器，

hibernate.session\u factory.interceptor

我在hibernate或spring数据jpa文档中没有找到这一点

---

您可以自定义

LocalContainerEntityManagerFactoryBean

的定义，将其指向您的自定义

persistence.xml

。在Spring Boot中，快速而肮脏的方法是创建一个

BeanPostProcessor

：

@Component
public class PersistenceXmlPostProcessor implements BeanPostProcessor {

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName)
      throws BeansException {
        if (bean instanceof LocalContainerEntityManagerFactoryBean && runtimeConditionMet()) {
            ((LocalContainerEntityManagerFactoryBean) bean).setPersistenceXmlLocation(<your custom persistence.xml location>)
        }
        return bean;
    }

}

---

（一个更干净的解决方案可能是扩展

EntityManagerFactoryBuilder

，但我希望您能了解大概的想法）。

除了@EntityListeners，因为没有设置动态您尝试过

spring.jpa.properties.hibernate.session\u factory.interceptor

？您可以通过将属性放在单独的配置文件中使其成为动态的。另请参见

hibernate.session\u factory.interceptor

设置为interceptor，但我想设置侦听器

@Component
public class PersistenceXmlPostProcessor implements BeanPostProcessor {

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName)
      throws BeansException {
        if (bean instanceof LocalContainerEntityManagerFactoryBean && runtimeConditionMet()) {
            ((LocalContainerEntityManagerFactoryBean) bean).setPersistenceXmlLocation(<your custom persistence.xml location>)
        }
        return bean;
    }

}

@SpringBootApplication(exclude = HibernateJpaAutoConfiguration.class)
public class MyApplication {
    ...
}

@Configuration
public class CustomHibernateJpaConfiguration extends JpaBaseConfiguration {

    ...// copy most methods over from HibernateJpaConfiguration

    @Override
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder factoryBuilder) {
        var result = super.entityManagerFactory(factoryBuilder);
        result.setPersistenceXmlLocation(...);
        return result;
    }

}