In memory H2 database console http://localhost:8080/h2-console OAuth2 Authorization end point Obtain a token POST http://localhost:8081/oauth/token Check a token POST http://localhost:8081/oauth/check_token Database password BCrypt https://www.browserling.com/tools/bcrypt http://localhost:8081/oauth/check_token?token=b5bad5a8-2df3-441a-8c4f-73ba237a2741 References https://pattern-match.com/blog/2018/10/17/springboot2-with-oauth2-integration/ https://projects.spring.io/spring-security-oauth/docs/oauth2.html https://projects.spring.io/spring-security-oauth/docs/oauth2.html#resource-server-configuration