BaseOauthServerBundle/Controller/OAuthController.php

<?php

namespace Base\OAuthServerBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\JsonResponse;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;

class OAuthController extends Controller
{

    /**
     * @Route("/api/user/me", name="user_data_json")
     * 
     * @return JsonResponse
     */
    public function getUserDataJsonAction()
    {
        $user = $this->getUser();
        $data = array();
        if ($user) {
            $data['id'] = $user->getId();
            $data['username'] = $user->getUsername();
            $data['firstname'] = $user->getFirstname();
            $data['lastname'] = $user->getLastname();
            $data['roles'] = $user->getRoles();
        }

        return new JsonResponse($data);
    }

}