AccountServiceImpl.java 文件源码

@Override
    @Transactional(propagation = Propagation.REQUIRED, isolation = Isolation.READ_COMMITTED)
    public void transferAmount(String fromUsername, String toUsername, int amount) {
        accountDao.subtractAmount(fromUsername, amount);
//         int i = 5 / 0;   // 模拟抛出异常，测试事务回滚
        accountDao.addAmount(toUsername, amount);

        System.out.println("transfer amount success");
    }