can I include user information while issuing an access token?

Question

I have seen in some oauth2 implementations additional information on the response returned by the authorization server when it issues access tokens. I\'m wondering if there

Answer 1

1. create a class file CustomTokenEnhancer

@Component
public class CustomTokenConverter extends JwtAccessTokenConverter {


    @Override
    public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {

        final Map additionalInfo = new HashMap<>();
        additionalInfo.put("customized", "true");
        User user = (User) authentication.getPrincipal();
        additionalInfo.put("role", user.getAuthorities().stream().map(GrantedAuthority::getAuthority).collect(Collectors.toList()));
        ((DefaultOAuth2AccessToken) accessToken).setAdditionalInformation(additionalInfo);

        return super.enhance(accessToken, authentication);
    }
}

2. paste below written code in AuthorizationServerConfig

@Override
public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
    TokenEnhancerChain enhancerChain = new TokenEnhancerChain();
    enhancerChain.setTokenEnhancers(Arrays.asList(customTokenEnhancer(),accessTokenConverter()));

    endpoints
        .tokenStore(tokenStore())
        .tokenEnhancer(customTokenEnhancer())
        .authenticationManager(authenticationManager);
}

@Bean
protected JwtAccessTokenConverter jwtTokenEnhancer() {
    JwtAccessTokenConverter converter=  new JwtAccessTokenConverter();
    converter.setSigningKey("my_signing_key");

    return converter;
}

@Bean
public CustomTokenConverter customTokenEnhancer() {
    return new CustomTokenConverter();
}

@Bean
public TokenStore tokenStore() {
    return new JdbcTokenStore(dataSource);
}

3. import appropriate libraries after paste the above codes

output response of Custom Token Enhancer..click here