@Transactional在方法级别不起作用

Question

我对Spring 3.2.3 @Transactional注解有疑问。我的服务类如下所示：

@Service @Transactional
class InventoryDisclosureBO {

@Autowired InventoryDisclosureDAO inventoryDisclosureDAO;

private static final Logger log = LoggerFactory.getLogger( InventoryDisclosureBO.class);

public void processDisclosureData(InventoryDisclosureStatus data){
  validate(data);
  persist(data);
}

@Transactional(propagation = REQUIRES_NEW)
void persist(InventoryDisclosureStatus data) {
  inventoryDisclosureDAO.setAllInvalid( data.getUnit());
  inventoryDisclosureDAO.insert( data );
}

void validate(InventoryDisclosureStatus data) {
 ...
}
}

如果我调用persist（）方法，所有方法都可以正常工作。但是，如果我在类级别将@Transactional注释掉-
事务将不会启动。谁能告诉我为什么Spring只能在methol级忽略@Transactional？

Answer 1

您不能从processDisclosureData（）调用persist（），因为它属于同一类，并且它将绕过Spring为InventoryDisclosureBO创建的事务代理。您应该从其他bean调用它以使@Transactional批注起作用。当Spring将对InventoryDisclosureBO
Bean的引用注入其他Bean时，它实际上是对InventoryDisclosureBOProxy的引用进行注入，该引用包含事务逻辑，例如

    class Bean2 {

      @Autowire
      private InventoryDisclosureBO idbo;   <-- Spring will inject a proxy here

      public void persist(InventoryDisclosureStatus data) {
           idbo.persist(data);     <-- now it will work via proxy
      }
...