@Transactional(propagation = Propagation.REQUIRED)在春季?

问题描述：

如果我有以下代码:

@Component
public class A{ 

@Transactional(propagation = Propagation.REQUIRED)
public void a(){
    //logic
    b();
 //logic
}

@Transactional(propagation = Propagation.REQUIRED)
public void b(){
    //logic
} 
}

在此代码示例中有多少笔交易打开了Spring?

How many transactions open Spring in this code example?

答

没关系.从a()调用b()时，它将不会通过代理，因此不会考虑b()上的任何事务属性.

It doesn't matter. When calling b() from a() it won't be going through the proxy, so any transactional attributes on b() won't be considered.

如果通过代理(即在类外部)调用a()或b()，示例代码将打开1个事务，并且尚无正在进行的事务.

The example code has 1 transaction open if a() or b() is called through the proxy (i.e. outside of the class) and there isn't a transaction in progress already.

@Transactional(propagation = Propagation.REQUIRED)在春季?

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