Spring @Async 生成 LazyInitializationExceptions

使用Spring @Async生成LazyInitializationExceptions

java
@Configuration
@EnableAsync
public class AppConfig extends AsyncConfigurerSupport {
    @Override
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(5);
        executor.setMaxPoolSize(10);
        executor.setQueueCapacity(25);
        executor.initialize();
        return executor;
    }
    @Bean
    public OpenEntityManagerInViewInterceptor openEntityManagerInViewInterceptor() {
        return new OpenEntityManagerInViewInterceptor();
    }
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addWebRequestInterceptor(openEntityManagerInViewInterceptor());
    }
}
@Service
public class UserService {
    @Autowired
    private UserRepository userRepository;
    @Transactional
    public void updateUserAsync(Long userId, String newEmail) {
        User user = userRepository.findById(userId).orElse(null);
        user.setEmail(newEmail);
        userRepository.save(user);
    }
    @Async
    public void updateUserAsyncWithLazyLoading(Long userId, String newEmail) {
        updateUserAsync(userId, newEmail);
        // 在此处访问关联实体
        User user = userRepository.findById(userId).orElse(null);
        System.out.println("User email: " + user.getEmail());
    }
}