How can I retrieve the azure AD JWT access token from Spring? - spring

Question

I'm trying to retrieve the azure JWT access token from my Spring Boot application from another application by querying a /token endpoint, but the token I receive is seemingly incorrect.
The project has a Spring Boot backend and an Eclipse rcp frontend. I'm attempting to retrieve the access token from the eclipse frontend. For this, I have the controller below:
#Autowired
private OAuth2AuthorizedClientService authorizedClientService;
#GetMapping("/token")
public String user(OAuth2AuthenticationToken authentication) {
OAuth2AuthorizedClient authorizedClient = this.authorizedClientService
.loadAuthorizedClient(authentication.getAuthorizedClientRegistrationId(), authentication.getName());
return authorizedClient.getAccessToken().getTokenValue();
}
Which returns a token with the following format:
PAQABAAAAAABeAFzDwllzTYGDLh_qYbH8hgtbYMB8x7YLamQyQPk_MEXyd9Ckc5epDFQMv3RxjmMie0JDr5uN82U4RFLgU3fnDBxGolo4XVwzLEsTZDmUK_r0YG6ZwLbbQI_ch_Xn8xCxhsFq-AoRbEESDqK3GmK4eXwCYoT0G8_XfZjHTvCNTOMqUb2Q-CD2EalIKf0zSZ5184qrvlXfdNeT_BJdH_tqaodn80Bp2UL2hdnOCDZuWRqKl_2fi4v-eOOKJCcjOqY6SreVEeoKkIvVdayGE8F6qCxFehmlA0sX9sVW34FIVYVo4lDRsTkm-WN2KJwxJmalNcxg0k2ObDnIeC1ulPPpiPq-O_LK9bVA4HEZ63cJi9ZwQHwLPUhOO6TquoCOroHSy5KPoFkX3N796hM1i0NpaaY4MeAx17CSYeZ9P06jvYD7UMTV3OwWt-OVrDm5z_AvbOvyHRf9wjh31H6oLoc-iu_NCspT6NzC2UZQSHBtKdydEcP6sNkRp073jrZEg8UtcVT6HzddIBk2P0tVeIiSyU3SfLETbzJE67xtJVip3ai9aLN28c0qt3rDBaVGDAXjXhqrh5D3NiXdQjS6YTAKy0bVmNk9Yr9o2CGBA2wFjE8OZ6_Hb3k8_13KMJHafx0gAA
Dependencies from pom.xml
Built using spring boot with the following relevant dependencies:
spring-boot-starter-web v2.2.4
azure-active-directory-spring-boot-starter v2.2.1
spring-security-oauth2-client v5.2.1
spring-security-oauth2-jose v5.2.1
spring-security-oauth2-resource-server v5.2.1
Config from application.yml
We support multiple authorization servers, here is the fully configured azure client:
spring:
security:
oauth2:
client:
azure:
client-id: XXX
client-secret: XXX
client-name: Microsoft
scope: openid, https://graph.microsoft.com/user.read, profile
authorization-grant-type: authorization_code
redirect-uri: http://localhost:8080/login/oauth2/code/azure
client-authentication-method: basic
authentication-method: post
provider:
authorization-uri: https://login.microsoftonline.com/XXX/oauth2/authorize
token-uri: https://login.microsoftonline.com/XXX/oauth2/token
user-info-uri: https://login.microsoftonline.com/XXX/openid/userinfo
jwt-set-uri: https://login.microsoftonline.com/dXXX/discovery/keys
azure:
activedirectory:
tenant-id: XXX
active-directory-groups: XXX
allow-telemetry: false
websecurityconfig.java
#Configuration
#EnableConfigurationProperties
#EnableWebSecurity
#Order(1)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
#Autowired
private OAuth2UserService<OidcUserRequest, OidcUser> oidcUserService;
#Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable()
.authorizeRequests()
[...]
.anyRequest().authenticated();
http.oauth2ResourceServer(OAuth2ResourceServerConfigurer::jwt)
http.oauth2Login()
.userInfoEndpoint()
.oidcUserService(oidcUserService)
.and()
.authorizationEndpoint();
}
[...]
}

Answer 1

This is how I ended up obtaining the open id token from Azure
#GetMapping("/token")
public String user(OAuth2AuthenticationToken authentication) {
DefaultOidcUser user = (DefaultOidcUser) authentication.getPrincipal();
return user.getIdToken().getTokenValue();
}