composer update

App\Providers\OAuthServiceProvider::class,
Dingo\Api\Provider\LaravelServiceProvider::class,
LucaDegasperi\OAuth2Server\Storage\FluentStorageServiceProvider::class,
LucaDegasperi\OAuth2Server\OAuth2ServerServiceProvider::class,

'Authorizer' => LucaDegasperi\OAuth2Server\Facades\Authorizer::class,

protected $middleware = [\LucaDegasperi\OAuth2Server\Middleware\OAuthExceptionHandlerMiddleware::class,
];
protected $routeMiddleware = [
  'oauth' => \LucaDegasperi\OAuth2Server\Middleware\OAuthMiddleware::class,
  'oauth-user' => \LucaDegasperi\OAuth2Server\Middleware\OAuthUserOwnerMiddleware::class,
  'oauth-client' => \LucaDegasperi\OAuth2Server\Middleware\OAuthClientOwnerMiddleware::class,
  'check-authorization-params' => \LucaDegasperi\OAuth2Server\Middleware\CheckAuthCodeRequestMiddleware::class,
  'csrf' => \App\Http\Middleware\VerifyCsrfToken::class,
];

php artisan vendor:publish 
php artisan migrate

'grant_types' => [
  'password' => [
    'class' => 'League\OAuth2\Server\Grant\PasswordGrant',
    'access_token_ttl' => 604800,
    'callback' => '\App\Http\Controllers\Auth\PasswordGrantVerifier@verify',
  ],
],

namespace App\Providers;

use Dingo\Api\Auth\Auth;
use Dingo\Api\Auth\Provider\OAuth2;
use Illuminate\Support\ServiceProvider;

class OAuthServiceProvider extends ServiceProvider
{
  public function boot()
  {
    $this->app[Auth::class]->extend('oauth', function ($app) {
      $provider = new OAuth2($app['oauth2-server.authorizer']->getChecker());

      $provider->setUserResolver(function ($id) {
        // Logic to return a user by their ID.
      });

      $provider->setClientResolver(function ($id) {
        // Logic to return a client by their ID.
      });

      return $provider;
    });
  }

  public function register()
  {
    //
  }
}

//Get access_token
Route::post('oauth/access_token', function() {
   return Response::json(Authorizer::issueAccessToken());
});

//Create a test user, you don't need this if you already have.
Route::get('/register',function(){
  $user = new App\User();
   $user->name="tester";
   $user->email="test@test.com";
   $user->password = \Illuminate\Support\Facades\Hash::make("password");
   $user->save();
});
$api = app('Dingo\Api\Routing\Router');

//Show user info via restful service.
$api->version('v1', ['namespace' => 'App\Http\Controllers'], function ($api) {
  $api->get('users', 'UsersController@index');
  $api->get('users/{id}', 'UsersController@show');
});

//Just a test with auth check.
$api->version('v1', ['middleware' => 'api.auth'] , function ($api) {
  $api->get('time', function () {
    return ['now' => microtime(), 'date' => date('Y-M-D',time())];
  });
});

//BaseController
namespace App\Http\Controllers;

use Dingo\Api\Routing\Helpers;
use Illuminate\Routing\Controller;

class BaseController extends Controller
{
  use Helpers;
}

//UsersController
namespace App\Http\Controllers;

use App\User;
use App\Http\Controllers\Controller;

class UsersController extends BaseController
{

  public function index()
  {
    return User::all();
  }

  public function show($id)
  {
    $user = User::findOrFail($id);
    // 数组形式
    return $this->response->array($user->toArray());
  }
}

namespace App\Http\Controllers\Auth;
use Illuminate\Support\Facades\Auth;

class PasswordGrantVerifier
{
  public function verify($username, $password)
  {
     $credentials = [
      'email'  => $username,
      'password' => $password,
     ];

     if (Auth::once($credentials)) {
       return Auth::user()->id;
     }

     return false;
  }
}

INSERT INTO 'oauth_clients' ('id', 'secret', 'name', 'created_at', 'updated_at') VALUES ('1', '2', 'Main website', '2016–03–13 23:00:00', '0000–00–00 00:00:00');