Looking for logging into the Java Controller Third Party site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Java Controller Third Party site. After that you can login as usual with your login credentials.
https://www.baeldung.com/authentication-against-a-third-party-service
https://www.baeldung.com/spring-security-authentication-provider
https://developer.okta.com/blog/2018/10/05/build-a-spring-boot-app-with-user-authentication
http://ics-software-engineering.github.io/play-example-login/
https://docs.oracle.com/javaee/5/tutorial/doc/bncbx.html
https://www.ibm.com/developerworks/library/se-oauthjavapt3/index.html
https://www.ibm.com/support/knowledgecenter/en/SSEQTP_9.0.0/com.ibm.websphere.base.doc/ae/tsec_custsvrsidejaas.html
https://stackoverflow.com/questions/46204968/authenticate-a-springboot-application-against-another-application-using-basic-au
https://www.petrikainulainen.net/programming/spring-framework/adding-social-sign-in-to-a-spring-mvc-web-application-configuration/
https://books.google.de/books?id=R1GPTsMAhcMC&pg=PA265&lpg=PA265&dq=java+login+controller+third+party
https://www.future-processing.pl/blog/exploring-spring-boot-and-spring-security-custom-token-based-authentication-of-rest-services-with-spring-security-and-pinch-of-spring-java-configuration-and-spring-integration-testing/
https://books.google.de/books?id=_ab5PncERGIC&pg=PA159&lpg=PA159&dq=java+login+controller+third+party
https://jaxenter.com/rest-api-spring-java-8-112289.html