application-oauth.yml spring: security: oauth2: client: registration: kakao: client-id: "Kakao Developers에서 받은 client-id " client-secret: "Kakao Developers에서 받은 client-secret" redirect-uri: "Kakao Developers에서 지정한 redirect-uri " authorization-grant-type: authorization_code client-authentication-method: POST client-name: Kakao CustomOAuth2UserService DefaultOAuth2UserService을 상속 받은 커스텀 클래스. loadU..