Spring + EntityManagerFactory +Hibernate 监听器 + 注入

使用 Spring + EntityManagerFactory + Hibernate 监听器 + 注入 这个技术组合可以使我们的应用更加稳定、高效、易于维护。本文将介绍如何结合这些技术，并提供一个案例代码以帮助读者更好地理解。

xml
    
    
        
            
            
        
    
    
    
    
    
    
    

java
@Entity
@EntityListeners(MyHibernateListener.class)
public class User {
    // 实体类的属性和方法
}

java
public class MyHibernateListener extends EmptyInterceptor {
    @Override
    public boolean onSave(Object entity, Serializable id, Object[] state, String[] propertyNames, Type[] types) {
        // 自定义逻辑
        return super.onSave(entity, id, state, propertyNames, types);
    }
    // 其他回调方法
}

java
@Entity
@EntityListeners(MyHibernateListener.class)
public class User {
    @Id
    private Long id;
    
    private String name;
    
    // getter 和 setter 方法
}
@Repository
public class UserRepository {
    @PersistenceContext
    private EntityManager entityManager;
    
    @Transactional
    public void save(User user) {
        entityManager.persist(user);
    }
}
@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;
    
    public void saveUser(User user) {
        userRepository.save(user);
    }
}
@Configuration
@EnableTransactionManagement
public class AppConfig {
    @Bean
    public EntityManagerFactory entityManagerFactory() {
        // 配置 EntityManagerFactory
    }
    
    @Bean
    public MyHibernateListener myHibernateListener() {
        return new MyHibernateListener();
    }
    
    // 其他配置
}
public class Application {
    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
        
        UserService userService = context.getBean(UserService.class);
        
        User user = new User();
        user.setId(1L);
        user.setName("John");
        
        userService.saveUser(user);
        
        context.close();
    }
}