没有类型为“javax.persistence.EntityManagerFactory”的合格 bean；可将 SpringBoot 从 2.1.18.RELEASE 升级到 2.6.2

Question

将 SpringBoot 从 2.1.18.RELEASE 升级到 2.6.2 时，没有可用的“javax.persistence.EntityManagerFactory”类型的合格 bean

@ConditionalOnProperty("spring.datasource.url")
@Configuration("databaseConfiguration")
@Service
public class DatabaseConfiguration {
/*Used both @Autowired and @PersistenceUnit but still giving same exception*/
@PersistenceUnit
private EntityManagerFactory entityManagerFactory;
@Autowired
ApplicationContext context;
@PostConstruct
public void initSessionFactory() {
SessionFactory sessionFactory = entityManagerFactory.unwrap(SessionFactory.class);

EventListenerRegistry registry = ((SessionFactoryImpl) sessionFactory).getServiceRegistry()
.getService(EventListenerRegistry.class);
registry.getEventListenerGroup(EventType.PERSIST).prependListener(new EntityListener());
registry.getEventListenerGroup(EventType.SAVE).prependListener(new EntityListener());
registry.getEventListenerGroup(EventType.SAVE_UPDATE).prependListener(new EntityListener());
registry.getEventListenerGroup(EventType.PERSIST_ONFLUSH).prependListener(new EntityListener());
ConfigurableListableBeanFactory beanFactory =
((ConfigurableApplicationContext) context).getBeanFactory();
beanFactory.registerSingleton("sessionFactory",
sessionFactory);
}
}

有人可以帮助我解决此问题吗？

谢谢。

Answer 1

您确定您的项目中已经实现了该接口吗？
如果您使用 Spring Boot，那么这个 Maven 依赖项可能会有所帮助：

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

对于配置，请查看一些教程，例如 https://www.bezkoder.com/jpa-entitymanager-spring-boot/