No qualifying bean of type 'javax.persistence.EntityManagerFactory' available whike upgrading SpringBoot from 2.1.18.RELEASE to 2.6.2

Question

No qualifying bean of type 'javax.persistence.EntityManagerFactory' available whike upgrading SpringBoot from 2.1.18.RELEASE to 2.6.2

@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);
}
}

Could someone help me to resolve this issue.

Thanks.

Answer 1

Are you sure that you have an implementation of that interface in your project? If you're using Spring Boot then maybe this Maven dependency could help:

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

For configuration have a look at some tutorial, e.g. https://www.bezkoder.com/jpa-entitymanager-spring-boot/