https://docs.spring.io/spring-security/site/docs/current/reference/htmlsingle/#pe-dpe

2019
https://www.mkyong.com/spring-boot/spring-security-there-is-no-passwordencoder-mapped-for-the-id-null/

2017
https://spring.io/blog/2017/11/01/spring-security-5-0-0-rc1-released#password-storage-format