spring注解之@PostConstruct在项目启动时执行指定方法

https://www.bilibili.com/video/BV17i4y1C7kh/?spm_id_from=333.999.0.0&vd_source=46d50b5d646b50dcb2a208d3946b1598
学习资料:https://juejin.cn/post/7247543825534419000
https://qa.1r1g.com/sf/ask/238458881/