@Configuration
public class Pac4jConfig {
    @Value("${salt}")
    private String salt;
    @Bean
    public Config config() {
        final OidcConfiguration oidcConfiguration = new OidcConfiguration();
        oidcConfiguration.setClientId("167480702619-8e1lo80dnu8bpk3k0lvvj27noin97vu9.apps.googleusercontent.com");
        oidcConfiguration.setSecret("MhMme_Ik6IH2JMnAT6MFIfee");
        oidcConfiguration.setPreferredJwsAlgorithm(JWSAlgorithm.PS384);
        oidcConfiguration.addCustomParam("prompt", "consent");
        final GoogleOidcClient oidcClient = new GoogleOidcClient(oidcConfiguration);
        oidcClient.setAuthorizationGenerator((ctx, profile) -> { profile.addRole("ROLE_ADMIN"); return profile; });
        final SAML2Configuration cfg = new SAML2Configuration(new ClassPathResource("samlKeystore.jks"), "pac4j-demo-passwd", "pac4j-demo-passwd", new ClassPathResource("metadata-okta.xml"));
        cfg.setMaximumAuthenticationLifetime(3600);
        cfg.setServiceProviderEntityId("https://localhost:8080/callback?client_name=SAML2Client");
        cfg.setServiceProviderMetadataResource(new FileSystemResource(new File("sp-metadata.xml").getAbsoluteFile()));
        final SAML2Client saml2Client = new SAML2Client(cfg);
        ...
        final CasConfiguration configuration = new CasConfiguration("https://casserverpac4j.herokuapp.com/login");
        final CasClient casClient = new CasClient(configuration);
        final SecretSignatureConfiguration secretSignatureConfiguration = new SecretSignatureConfiguration(salt);
        final SecretEncryptionConfiguration secretEncryptionConfiguration = new SecretEncryptionConfiguration(salt);
        final JwtAuthenticator authenticator = new JwtAuthenticator();
        authenticator.setSignatureConfiguration(secretSignatureConfiguration);
        authenticator.setEncryptionConfiguration(secretEncryptionConfiguration);
        ParameterClient parameterClient = new ParameterClient("token", authenticator);
        parameterClient.setSupportGetRequest(true);
        parameterClient.setSupportPostRequest(false);
        final DirectBasicAuthClient directBasicAuthClient = new DirectBasicAuthClient(new SimpleTestUsernamePasswordAuthenticator());
        final Clients clients = new Clients("https://localhost:8080/callback", oidcClient, saml2Client, facebookClient,
                twitterClient, formClient, indirectBasicAuthClient, casClient, parameterClient, directBasicAuthClient);
        final Config config = new Config(clients);
        config.addAuthorizer("admin", new RequireAnyRoleAuthorizer("ROLE_ADMIN"));
        return config;
    }
}