application.properties vs. applicant.yml

application.properties和application.yml文件的区别 - 简书
https://www.jianshu.com/p/941aee2a99cf

application.properties 文件和 application.yml 文件有什么区别呢？_无知人生，记录点滴-CSDN博客
https://blog.csdn.net/testcs_dn/article/details/78959700

application.properties与application.yml之间的区别_Aswbw的博客-CSDN博客
https://blog.csdn.net/qq_29648651/article/details/78503853

在Spring Boot中使用application.yml和application.properties Baeldung
https://www.baeldung.com/spring-boot-yaml-vs-properties

春季-可以将application.properties和application.yml混合吗？ - 堆栈溢出
https://stackoverflow.com/questions/31970576/can-application-properties-and-application-yml-be-mixed