@Transactional 在方法级别不起作用

问题描述

我有一个关于 Spring 3.2.3 @Transactional 注释的问题.我的服务类看起来像这样:

I have a question about Spring 3.2.3 @Transactional annotation.My Service class looks like this:

@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，一切都会完美运行.但是，如果我在类级别注释掉 @Transactional - 事务不会启动.有人能告诉我为什么 Spring 只能在甲醇级别忽略 @Transactional 吗?

All works perfectly if I call persist() method. But if I comment out @Transactional at class level - transaction does not start.Could anybody tell me why Spring could ignore @Transactional on methol-level only?

推荐答案

你不能从 processDisclosureData() 调用 persist() 因为它属于同一个类，它会绕过 Spring 为 InventoryDisclosureBO 创建的事务代理.您应该从其他 bean 调用它以使 @Transactional 注释工作.当 Spring 向其他 bean 注入对 InventoryDisclosureBO bean 的引用时，它实际上注入了对包含事务逻辑的 InventoryDisclosureBOProxy 的引用，例如

You cannot call persist() from processDisclosureData() because it belongs to the same class and it will bypass transactional proxy created by Spring for InventoryDisclosureBO. You should call it from other beans to make @Transactional annotations work. When Spring injects a reference to InventoryDisclosureBO bean to other beans it actually injects a reference to InventoryDisclosureBOProxy which contains transactional logic, eg

    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
      }
...

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