# 請求概述 ***** Your Slim app’s routes and middleware are given a PSR-7 request object that represents the current HTTP request received by your web server. The request object implements the[PSR-7 ServerRequestInterface](http://www.php-fig.org/psr/psr-7/#3-2-1-psr-http-message-serverrequestinterface)with which you can inspect and manipulate the HTTP request method, headers, and body. > Slim應用程序的路由和中間件都有一個PSR-7請求對象，該對象表示web服務器接收到的當前HTTP請求。請求對象實現了[PSR-7 ServerRequestInterface](http://www.php-fig.org/psr/psr-7/#3-2-1-psr-http-message-serverrequestinterface)，您可以使用它檢查和操作HTTP請求方法、頭和正文。 ## 如何獲取請求對象 The PSR-7 request object is injected into your Slim application routes as the first argument to the route callback like this: > 將PSR-7請求對象作為路由回調的第一個參數注入到您的slim程序路由中，如下所示: ~~~php <?php use Psr\Http\Message\ResponseInterface as Response; use Psr\Http\Message\ServerRequestInterface as Request; use Slim\Factory\AppFactory; require __DIR__ . '/../vendor/autoload.php'; $app = AppFactory::create(); $app->get('/hello', function (Request $request, Response $response) { $response->getBody()->write('Hello World'); return $response; }); $app->run(); ~~~ Figure 1: Inject PSR-7 request into application route callback. The PSR-7 request object is injected into your Slim application*middleware*as the first argument of the middleware callable like this: 將PSR-7請求對象注入到您的slim應用程序*中間件*中，作為可調用的中間件的第一個參數，如下所示: ~~~php <?php use Psr\Http\Message\ResponseInterface as Response; use Psr\Http\Message\ServerRequestInterface as Request; use Psr\Http\Server\RequestHandlerInterface as RequestHandler; use Slim\Factory\AppFactory; require __DIR__ . '/../vendor/autoload.php'; $app = AppFactory::create(); $app->add(function (ServerRequestInterface $request, RequestHandler $handler) { return $handler->handle($request); }); // ...define app routes... $app->run(); ~~~ Figure 2: Inject PSR-7 request into application middleware.