private function __getCode()
 {
     $server = $this->__server;
     $router = $this->__router;
     $request = $this->__request;
     $dispatcher = $router->getDispatcher();
     try {
         //            如果成功返回
         $response = $dispatcher->dispatch($request->getMethod(), $request->getPathInfo());
     } catch (\Orno\Http\Exception $e) {
         // A failed response
         $response = $e->getJsonResponse();
         $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
     } catch (\League\OAuth2\Server\Exception\OAuthException $e) {
         $response = new Response(json_encode(['error' => $e->errorType, 'message' => $e->getMessage()]), $e->httpStatusCode);
         foreach ($e->getHttpHeaders() as $header) {
             $response->headers($header);
         }
     } catch (\Exception $e) {
         $response = new \Orno\Http\Response();
         $response->setStatusCode(500);
         $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
     } finally {
         // Return the response
         $response->headers->set('Content-type', 'application/json');
         $response->send();
     }
 }
});
$router->post('/access_token', function (Request $request) use($server) {
    try {
        $response = $server->issueAccessToken();
        return new Response(json_encode($response), 200);
    } catch (\Exception $e) {
        return new Response(json_encode(['error' => $e->errorType, 'message' => $e->getMessage()]), $e->httpStatusCode, $e->getHttpHeaders());
    }
});
$dispatcher = $router->getDispatcher();
try {
    // A successful response
    $response = $dispatcher->dispatch($request->getMethod(), $request->getPathInfo());
} catch (\Orno\Http\Exception $e) {
    // A failed response
    $response = $e->getJsonResponse();
    $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
} catch (\League\OAuth2\Server\Exception\OAuthException $e) {
    $response = new Response(json_encode(['error' => $e->errorType, 'message' => $e->getMessage()]), $e->httpStatusCode);
    foreach ($e->getHttpHeaders() as $header) {
        $response->headers($header);
    }
} catch (\Exception $e) {
    $response = new Orno\Http\Response();
    $response->setStatusCode(500);
    $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
} finally {
    // Return the response
    $response->headers->set('Content-type', 'application/json');
    $response->send();
}
 /**
  * ¶ÔÍâapi
  */
 public function index()
 {
     // Routing setup
     $request = (new Request())->createFromGlobals();
     $router = new \Orno\Route\RouteCollection();
     $router->setStrategy(\Orno\Route\RouteStrategyInterface::RESTFUL_STRATEGY);
     // Set up the OAuth 2.0 authorization server
     $server = new \League\OAuth2\Server\AuthorizationServer();
     $server->setSessionStorage(new Storage\SessionStorage());
     $server->setAccessTokenStorage(new Storage\AccessTokenStorage());
     $server->setRefreshTokenStorage(new Storage\RefreshTokenStorage());
     $server->setClientStorage(new Storage\ClientStorage());
     $server->setScopeStorage(new Storage\ScopeStorage());
     $server->setAuthCodeStorage(new Storage\AuthCodeStorage());
     $clientCredentials = new \League\OAuth2\Server\Grant\ClientCredentialsGrant();
     $server->addGrantType($clientCredentials);
     $passwordGrant = new \League\OAuth2\Server\Grant\PasswordGrant();
     $passwordGrant->setVerifyCredentialsCallback(function ($username, $password) {
         $result = (new Model\Users())->get($username);
         if (count($result) !== 1) {
             return false;
         }
         if (password_verify($password, $result[0]['password'])) {
             return $username;
         }
         return false;
     });
     $server->addGrantType($passwordGrant);
     $refrehTokenGrant = new \League\OAuth2\Server\Grant\RefreshTokenGrant();
     $server->addGrantType($refrehTokenGrant);
     // Routing setup
     $request = (new Request())->createFromGlobals();
     $router = new \Orno\Route\RouteCollection();
     $router->post('/access_token', function (Request $request) use($server) {
         try {
             $response = $server->issueAccessToken();
             return new Response(json_encode($response), 200);
         } catch (\Exception $e) {
             return new Response(json_encode(['error' => $e->errorType, 'message' => $e->getMessage()]), $e->httpStatusCode, $e->getHttpHeaders());
         }
     });
     $dispatcher = $router->getDispatcher();
     try {
         // A successful response
         $response = $dispatcher->dispatch($request->getMethod(), $request->getPathInfo());
     } catch (\Orno\Http\Exception $e) {
         // A failed response
         $response = $e->getJsonResponse();
         $response->setContent(json_encode(['status_code' => $e->getStatusCode(), 'message' => $e->getMessage()]));
     } catch (\League\OAuth2\Server\Exception\OAuthException $e) {
         $response = new Response(json_encode(['error' => $e->errorType, 'message' => $e->getMessage()]), $e->httpStatusCode);
         foreach ($e->getHttpHeaders() as $header) {
             $response->headers($header);
         }
     } catch (\Exception $e) {
         $response = new \Orno\Http\Response();
         $response->setStatusCode(500);
         $response->setContent(json_encode(['status_code' => 500, 'message' => $e->getMessage()]));
     } finally {
         // Return the response
         $response->headers->set('Content-type', 'application/json');
         $response->send();
     }
 }