1.什么都不设置事务是默认提交的  两次获取的连接是不是一样的

参考文献(重磅):

(542条消息) JdbcTemplate的事务控制_jdbctemplate transactionmanager_DayDayUp丶的博客-CSDN博客

 @PostMapping("/pinYin22")
    @CrossOrigin
    @Transactional
    public String pinYin22(HttpServletRequest request) throws Exception {
        //开启手动事务
        Connection connection = null;
       connection = jdbcTemplate.getDataSource().getConnection();
        connection.setAutoCommit(false);
        PreparedStatement preparedStatement = null;
        //try后就算加了事务注解,数据库也不会回滚,所以要手动提交事务
       /* try {
            if (1==1){
                throw new RuntimeException("异常啦");
            }
        } catch (RuntimeException e) {
            e.printStackTrace();
        }*/
        /*preparedStatement = connection.prepareStatement("INSERT INTO t_test (idd, name) VALUES (?,?)");

            preparedStatement.setString(1, UUID.randomUUID().toString());
            preparedStatement.setString(2, "刘备");
        preparedStatement.execute();
        connection.commit();*/

        String importSql1 ="update tablename set name=?";
        String replace = importSql1.replace("tablename", "t_test");

        jdbcTemplate.update(replace,"232");
        connection.rollback();

        return "99999";
    }

 

 总结:1.不支持手动事务(可以参考链接设置)  2.事务注解可以接管  3.捕获异常后注解不生效 

(542条消息) spring事务在try catch时候的执行_srping try catch 事务_TARS_的博客-CSDN博客