mysql用事务插入数据

Connection conn = null;
        try {
            conn = queryRunner.getDataSource().getConnection();
            ConnectionUtils.setAutoCommit(conn, false);
            aa.save();
            bb.save();
            ConnectionUtils.commit(conn);
        } catch (SQLException e) {
            log.error("e", e);
            ConnectionUtils.rollback(conn);
            ret.set(-1, "系统异常");
        } finally {
            ConnectionUtils.setAutoCommit(conn, true);
            ConnectionUtils.closeConnection(conn);
        }
        return ret;