@Validated时@Transactional不起作用

Question

如果我@Validated向我的服务的接口/实现添加注释,那么该服务不再是事务性的.Stacktrace显示没有,TransactionInterceptor但我只看到MethodValidationInterceptor.如果我删除@Validated然后我看到TransactionInterceptor并MethodValidationInterceptor消失当然.这些方面是否相互排斥？

@Service
//@Validated <- here is my problem :)
public interface AdminService {
  String test(String key, String result);
}

public class AdminServiceImpl implements AdminService, BeanNameAware, ApplicationContextAware {

  @Override
  @Transactional(transactionManager = "transactionManager")
  public String test(String key, String result) {

    return "hehe";
  }
}

@Configuration
@EnableAspectJAutoProxy(exposeProxy = true)
@EnableTransactionManagement(order = AspectPrecedence.TRANSACTION_MANAGEMENT_ORDER)
public class AppConfiguration {..}

Answer 1

解决了

@Transactional@Validated当服务使用ApplicationContextAware如下界面注入自己的代理时,不要一起工作:

  private String beanName;

  private AdminService self;

  @Override
  public void setBeanName(String beanName) {
    this.beanName = beanName;
  }

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    self = applicationContext.getBean(beanName, AdminService.class);
  }

在调试过程中,我注意到在后处理阶段setApplicationContext()调用该方法ApplicationContextAwareProcessor,其中MethodValidationPostProcessor(@Validated)和AnnotationAwareAspectJAutoProxyCreator(@Transactional和@Aspects)将原始bean包装到代理实例中.

getBean()在此过程中间调用方法会导致bean无法完全初始化,因为某些后处理操作未应用.在我的情况下TransactionInterceptor没有添加.

为了将自己的代理注入到服务中,我最终创建了专门的Ordered BeaNPostProcessor,LOWEST_PRECEDENCE以确保我在完全初始化的bean上运行.