How to configure oAuth2 when Authorization Server is also the Resource server - spring-boot

Question

I'm trying to setup a very basic oAuth2 authentication in spring boot 2.x.x using either authorization code grant or implicit grant but I can't seem to access the Resource server (which resides in the same spring boot app as the Authorization server) after the token is obtained.
Following is the configuration of WebSecurityConfigurerAdapter
#EnableWebSecurity
#Configuration
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
private static final String[] IGNORE_URIS = {
"/swagger-resources/**",
"/swagger-ui.html",
"/v2/api-docs",
"/webjars/**",
"/resources/**",
"/h2-console/**",
"/common/**",
"/configuration/ui",
"/configuration/security",
"/error"
};
#Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
#Override
public void configure(WebSecurity web) {
web.ignoring().antMatchers(IGNORE_URIS);
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.antMatchers("/product/**")
.hasAnyRole("ADMIN").and()
.httpBasic().and().formLogin().and().authorizeRequests().anyRequest().authenticated();
}
#Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser("admin").password("{noop}admin").roles("ADMIN");
}
#Bean
public PasswordEncoder bCrypt() {
return new BCryptPasswordEncoder();
}
And the AuthorizationServerConfigurerAdapter
#Configuration
#EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {
private final AuthenticationManager authenticationManager;
#Autowired
public AuthorizationServerConfiguration(AuthenticationConfiguration authenticationConfiguration) throws Exception {
this.authenticationManager = authenticationConfiguration.getAuthenticationManager();
}
#Override
public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
clients
.inMemory()
.withClient("my-client-id")
.authorizedGrantTypes("authorization_code", "implicit")
.authorities("ADMIN")
.scopes("all")
.resourceIds("product_api")
.secret("{noop}secret").redirectUris("https://google.com").accessTokenValiditySeconds(0);
}
#Override
public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {
oauthServer.tokenKeyAccess("permitAll()")
.checkTokenAccess("permitAll()");
}
#Override
public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
endpoints.authenticationManager(authenticationManager);
}
}
So far so good. I am able to reach the default Spring login page by typing the following Url in the browser.
http://localhost:8080/oauth/authorize?response_type=token&client_id=my-client-id&redirect_uri=https://google.com
Then The login page shows up and I enter my credentials.
After I log in I can then grant access to "my-client-id" app.
Eventually after I approve the app I can see the newly generated access token in the URL bar of the browser which is something like this.
https://www.google.com/#access_token=f2153498-6a26-42c6-93f0-80825ef03b16&token_type=bearer&scope=all
My question is that All of this flow won't work when I also configure a Resource Server.
#EnableResourceServer
#Configuration
public class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {
#Override
public void configure(ResourceServerSecurityConfigurer resources) {
resources.resourceId("product_api");
}
#Override
public void configure(HttpSecurity http) throws Exception {
http
.requestMatchers()
.antMatchers("/**")
.and().authorizeRequests()
.antMatchers("/**").permitAll();
}
}
What am I doing wrong? When I try to access the oauth/authorize url as before I get the following:
Why? How can one access the login page and retrieve the token? What Am I missing?

Answer 1

You need to use
#Order
Annotation to specify order for WebMvc and ResourceServer classes
#EnableWebSecurity
#Configuration
#Order(1)
public class WebSecurityConfiguration extends WebSecurityConfigurerAdapter {
...
}
and for Resource Server
#EnableResourceServer
#Configuration
#Order(2)
public class ResourceServerConfiguration extends ResourceServerConfigurerAdapter {
...
}
If you want to see workable example, you can check it here https://github.com/alex-petrov81/stackoverflow-answers/tree/master/auth-server-also-resource
I've created it from your code example.