SpringBoot获取yml内多层级配置信息

SpringBoot中@ConfigurationProperties对于多层嵌套参数的正确加载方法

补充学习：
https://www.cnblogs.com/Guhongying/p/10511049.html

https://www.cnblogs.com/FraserYu/p/11261916.html

https://blog.csdn.net/MyHerux/article/details/83549149