https://baijiahao.baidu.com/s?id=1593192556844228644&wfr=spider&for=pc

讲的这个地方，第二个Propagation.REQUIRES_NEW，代码有问题，应该是他们贴错了

百度这个讲的乱起八早，

https://blog.csdn.net/nwj1989/article/details/80549760

https://blog.csdn.net/fu123123fu/article/details/86359804

https://blog.csdn.net/weixin_39625809/article/details/80707695