编程式事务的坑

异常是由于spring的事务处理是按照LIFO/stack behavior的方式进行的，所以在多个事务进行提交时必须按照上述规则进行，否则就会报下面的异常。

使用spring在应用开发中出现如下异常：

java.lang.IllegalStateException: Cannot deactivate transaction synchronization - not active
        at org.springframework.transaction.support.TransactionSynchronizationManager.clearSynchronization(TransactionSynchronizationManager.java:313)
        at org.springframework.transaction.support.TransactionSynchronizationManager.clear(TransactionSynchronizationManager.java:451)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.cleanupAfterCompletion(AbstractPlatformTransactionManager.java:986)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:782)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:701)