Spring OAuth2 with JWT - Cannot convert access token to JSON When Separating Auth and Resource Servers

Question

I am looking to use Spring Boot to create an OAuth2 Authentication server that could be used by multiple Resource server. Consequently, I am needing to create the two server

Answer 1

In the Resource Server and Oauth Server both you should use both verifier key and signing key.

@Bean
public JwtAccessTokenConverter accessTokenConverter() {
    JwtAccessTokenConverter converter = new JwtAccessTokenConverter();
    converter.setVerifierKey(signingKey);
    converter.setSigningKey(signingKey);
    return converter;
}