/**
* 开启事务
*/
public void beginTransaction() {
try {
connectionUtils.getThreadConnection().setAutoCommit(false);
} catch (Exception e) {
e.printStackTrace();
}
}
public void transfer(String sourceName, String targetName, Float money) {
try {
//开启事务
transactionManager.beginTransaction();
//执行操作
//根据名称分别查询到转入转出的账户
Account source = accountDao.findAccountByName(sourceName);
Account target = accountDao.findAccountByName(targetName);
//转入转出账户加减
source.setBalance(source.getBalance() - money);
target.setBalance(target.getBalance() + money);
//更新转出转入账户
accountDao.updateAccount(source);
//模拟转账异常
int num = 100 / 0;
accountDao.updateAccount(target);
//提交事务
transactionManager.commit();
} catch (Exception e) {
//回滚操作
transactionManager.rollback();
e.printStackTrace();
} finally {
//释放连接
transactionManager.release();
}
}
跟着博客敲的代码,实现了转账的功能,抛出异常后调用了回滚方法,但是异常之前提交修改的数据仍然发生了改变,数据库引擎为 innodb,请问下怎么解决? https://i.imgur.com/tNorCDi.png https://i.imgur.com/NLeb1Wk.png https://i.imgur.com/7ia1Ntx.png