Аутентификация

@Autowired
private CurrentAuthentication currentAuthentication;

private void printAuthenticationInfo() {
    UserDetails user = currentAuthentication.getUser();
    Authentication authentication = currentAuthentication.getAuthentication();
    Locale locale = currentAuthentication.getLocale();
    TimeZone timeZone = currentAuthentication.getTimeZone();

    System.out.println(
            "User: " + user.getUsername() + "\n" +
                    "Authentication: " + authentication + "\n" +
                    "Roles: " + getRoleNames(authentication) + "\n" +
                    "Locale: " + locale.getDisplayName() + "\n" +
                    "TimeZone: " + timeZone.getDisplayName()
    );
}

private String getRoleNames(Authentication authentication) {
    return authentication.getAuthorities().stream()
            .map(GrantedAuthority::getAuthority)
            .collect(Collectors.joining(","));
}

@Autowired
private SystemAuthenticator systemAuthenticator;
@Autowired
private CurrentAuthentication currentAuthentication;

@ManagedOperation
public String doSomething() {
    return systemAuthenticator.withSystem(() -> {
        UserDetails user = currentAuthentication.getUser();
        System.out.println("User: " + user.getUsername()); // system
        // ...
        return "Done";
    });
}

@ManagedOperation
public String doSomething2() {
    return systemAuthenticator.withUser("admin", () -> {
        UserDetails user = currentAuthentication.getUser();
        System.out.println("User: " + user.getUsername()); // admin
        // ...
        return "Done";
    });
}

@Autowired
private CurrentAuthentication currentAuthentication;

@Authenticated // authenticates the entire method
@ManagedOperation
public String doSomething3() {
    UserDetails user = currentAuthentication.getUser();
    System.out.println("User: " + user.getUsername()); // system
    // ...
    return "Done";
}

@Component
public class AuthenticationEventListener {

    private static final Logger log =
            LoggerFactory.getLogger(AuthenticationEventListener.class);

    @EventListener
    public void onInteractiveAuthenticationSuccess(
            InteractiveAuthenticationSuccessEvent event) { (1)
        User user = (User) event.getAuthentication().getPrincipal(); (2)
        log.info("User logged in: " + user.getUsername());
    }

    @EventListener
    public void onAuthenticationSuccess(
            AuthenticationSuccessEvent event) { (3)
        User user = (User) event.getAuthentication().getPrincipal(); (4)
        log.info("User authenticated " + user.getUsername());
    }

    @EventListener
    public void onAuthenticationFailure(
            AbstractAuthenticationFailureEvent event) { (5)
        String username = (String) event.getAuthentication().getPrincipal(); (6)
        log.info("User login attempt failed: " + username);
    }

    @EventListener
    public void onLogoutSuccess(LogoutSuccessEvent event) { (7)
        User user = (User) event.getAuthentication().getPrincipal(); (8)
        log.info("User logged out: " + user.getUsername());
    }
}