Disabling login/logout pages in Spring framework, see more in https://blog.gypsyengineer.com/en/security/tips-configuring-security-rest-api-spring.html

SecurityConfig.java

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.logout().disable();
        http.formLogin().disable();
        // ...
    }
}