Oauth Authorization Server with Custom Authentication Manager in Java Configuration

I have multiple authentication managers in my application. I distinguish them by the name bean. The oauth authorization server part of my xml looks and works fine:

<oauth:expression-handler id="oauthExpressionHandler" />
<oauth:web-expression-handler id="oauthWebExpressionHandler" />

<oauth:authorization-server client-details-service-ref="clientDetails" token-services-ref="tokenServices" user-approval-handler-ref="userApprovalHandler" >
    <oauth:authorization-code disabled="true" />
    <oauth:implicit disabled="false" />
    <oauth:refresh-token disabled="false" />
    <oauth:client-credentials disabled="false" />
    <oauth:password authentication-manager-ref="authenticationManager" />
</oauth:authorization-server>

<oauth:resource-server id="resourceServerFilter" resource-id="resource-id" token-services-ref="tokenServices" />

<sec:authentication-manager id="clientAuthenticationManager">
    <sec:authentication-provider user-service-ref="clientDetailsUserService" />
</sec:authentication-manager>

<http pattern="/oauth/token" create-session="stateless" authentication-manager-ref="clientAuthenticationManager"
      xmlns="http://www.springframework.org/schema/security">
    <intercept-url pattern="/oauth/token" access="IS_AUTHENTICATED_FULLY" />
    <anonymous enabled="false" />
    <http-basic entry-point-ref="clientAuthenticationEntryPoint" />
    <!-- include this only if you need to authenticate clients via request parameters -->
    <custom-filter ref="oauthClientCredentialsTokenEndpointFilter" before="BASIC_AUTH_FILTER" />
    <access-denied-handler ref="oauthAccessDeniedHandler" />
</http>

      

        
        
        
      

    

I am trying to move it to Java config (in some sort of SecurityConfig class) until there is a shortage. I've tried something like:

@Configuration
@EnableAuthorizationServer
protected static class OAuth2AuthConfig extends AuthorizationServerConfigurerAdapter {

    @Resource(name = "authenticationManager")
    private AuthenticationManager authenticationManager;

    @Resource
    private OAuth2AuthenticationEntryPoint authenticationEntryPoint;

    @Resource(name = "clientDetails")
    private ClientDetailsService clientDetailsService;

    @Resource
    private TokenStore tokenStore;

    @Resource
    private TokenStoreUserApprovalHandler userApprovalHandler;

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security.authenticationEntryPoint(authenticationEntryPoint);
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        endpoints.authenticationManager(authenticationManager)
                .userApprovalHandler(userApprovalHandler)
                .tokenStore(tokenStore);
    }

    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.withClientDetails(clientDetailsService);
    }
}

@Configuration
@EnableResourceServer
protected static class OAuth2ResourceConfig extends ResourceServerConfigurerAdapter {

    @Resource
    private DefaultTokenServices tokenServices;

    @Resource(name = "authenticationManager")
    private AuthenticationManager authenticationManager;

    @Override
    public void configure(ResourceServerSecurityConfigurer resources) {
        resources.resourceId(RESOURCE_ID).tokenServices(tokenServices).authenticationManager(authenticationManager);
    }
}

      

        
        
        
      

    

however, it still complains about multiple authentication admins, although I am explicitly setting endpoints.authenticationManager(authenticationManager)

.

With some debugging, I can see it trying to set it up in the WebSecurityConfigurerAdapter class and encountering multiple authentication managers in the authenticationManager()

. Can I override it or what is missing?