一、Spring security OAuth2
https://projects.spring.io/spring-security-oauth/docs/oauth2.html
https://docs.spring.io/spring-security-oauth2-boot/docs/2.1.3.RELEASE/reference/htmlsingle/
https://docs.spring.io/spring-security-oauth2-boot/docs/2.1.3.RELEASE/
https://docs.spring.io/spring-security-oauth2-boot/docs/
https://docs.spring.io/spring-boot/docs/2.1.3.RELEASE/
https://docs.spring.io/spring-boot/docs/
https://docs.spring.io/spring-framework/docs/
https://docs.spring.io/spring-framework/docs/5.1.4.RELEASE/
https://spring.io/guides/tutorials/spring-boot-oauth2/
https://docs.spring.io/spring-security/site/docs/current/reference/htmlsingle/#core-services-password-encoding
https://spring.io/projects/spring-cloud-security
https://cloud.spring.io/spring-cloud-security/single/spring-cloud-security.html
https://docs.spring.io/spring-session/docs/current/reference/html5/guides/java-security.html
https://docs.spring.io/spring-session/docs/current/reference/html5/guides/boot-redis.html#boot-spring-configuration