[keycloak-user] How to get access access token with SPNEGOAuthenticator?

[ola rob]

Hi,

For some legacy reasons, we are using keycloak API/services for
authentication but not redirecting our application to keycloak. We are able
to get access token and refresh token (AccessTokenResponse.class) when we
authenticate using login API by sending username and password. But we are
unable to get them when authenticating using spnego token.
The SPNEGOAuthenticator class doesn't return any access token after
successful authentication. We need these tokens to manage our application
session internally. So, how can we get access and refresh token or response
similar to username password authentication?

 SPNEGOAuthenticator spnegoAuthenticator = new
SPNEGOAuthenticator(kerberosConfig, kerberosAuth, spnegoToken);
spnegoAuthenticator.authenticate();
 if (spnegoAuthenticator.isAuthenticated()) {
String username = spnegoAuthenticator.getAuthenticatedUsername(); //
returning the username correctly.
}

Thanks in advance!