【SpringSecurity】Authentication情報の書き換えサンプル

public class RewriteClientInfoSample {

    @Autowired
    private AuthenticationManager authManager;
    
    private void rewriteClientInfo(String principal, String credential) {
        UsernamePasswordAuthenticationToken authReq = new UsernamePasswordAuthenticationToken(principal, credential);
        Authentication auth = authManager.authenticate(authReq);
        SecurityContextHolder.getContext().setAuthentication(auth);
    }
}