spring @Transactional exception not rollback

 protected Object invokeWithinTransaction(Method method, Class targetClass, final      InvocationCallback invocation)
		throws Throwable {

   try {
       ...
   }
   catch (Throwable ex) {
      // target invocation exception
      completeTransactionAfterThrowing(txInfo, ex);
      throw ex;
   }
   ...
}

protected void completeTransactionAfterThrowing(TransactionInfo txInfo, Throwable ex) {
    ...
    if (txInfo.transactionAttribute.rollbackOn(ex)) {
        ...
        txInfo.getTransactionManager().rollback(txInfo.getTransactionStatus());
        ...
    }
    else
    {
        ...
        txInfo.getTransactionManager().commit(txInfo.getTransactionStatus());
        ...
    }

}

public boolean rollbackOn(Throwable ex) {
    return (ex instanceof RuntimeException || ex instanceof Error);
}

@Transactional(propagation=Propagation.REQUIRED,rollbackForClassName={"Exception"})