public static AuthenticationController getInstance(ServletConfig config) throws UnsupportedEncodingException {
    String domain = config.getServletContext().getInitParameter("com.auth0.domain");
    String clientId = config.getServletContext().getInitParameter("com.auth0.clientId");
    String clientSecret = config.getServletContext().getInitParameter("com.auth0.clientSecret");

    if (domain == null || clientId == null || clientSecret == null) {
        throw new IllegalArgumentException("Missing domain, clientId, or clientSecret. Did you update src/main/webapp/WEB-INF/web.xml?");
    }

    // JwkProvider required for RS256 tokens. If using HS256, do not use.
    JwkProvider jwkProvider = new JwkProviderBuilder(domain).build();
    return AuthenticationController.newBuilder(domain, clientId, clientSecret)
            .withJwkProvider(jwkProvider)
            .build();
}
 

@Bean
public AuthenticationController authenticationController() throws UnsupportedEncodingException {
    JwkProvider jwkProvider = new JwkProviderBuilder(domain).build();
    return AuthenticationController.newBuilder(domain, clientId, clientSecret)
            .withJwkProvider(jwkProvider)
            .build();
}
 

@Bean
public AuthenticationController authenticationController() throws UnsupportedEncodingException {
    JwkProvider jwkProvider = new JwkProviderBuilder(domain).build();
    return AuthenticationController.newBuilder(domain, clientId, clientSecret)
        .withJwkProvider(jwkProvider)
        .build();
}