php - 如何使用 Guzzle PHP 获取 SENT 数据的主体？

Question

我在 PHP 中使用 Guzzle (v6.1.1) 向服务器发出 POST 请求。它工作正常。我正在添加一些日志记录功能来记录发送和接收的内容，但我不知道如何获取 Guzzle 发送到服务器的数据。我可以很好地获得响应，但是如何获得已发送数据？ (这将是 JSON 字符串。)

这是我的代码的相关部分:

$client = new GuzzleHttp\Client(['base_uri' => $serviceUrlPayments ]);
    try {
       $response = $client->request('POST', 'Charge', [
            'auth' => [$securenetId, $secureKey],
            'json' => [     "amount" => $amount,
                            "paymentVaultToken" => array(
                                    "customerId" => $customerId,
                                    "paymentMethodId" => $token,
                                    "publicKey" => $publicKey
                                    ),
                            "extendedInformation" => array(
                                    "typeOfGoods" => $typeOfGoods,
                                    "userDefinedFields" => $udfs,
                                    "notes" => $Notes
                                    ),
                            'developerApplication'=> $developerApplication 
            ]
    ]);

    } catch (ServerErrorResponseException $e) {
        echo (string) $e->getResponse()->getBody();
    }


    echo $response->getBody(); // THIS CORRECTLY SHOWS THE SERVER RESPONSE
    echo $client->getBody();           // This doesn't work
    echo $client->request->getBody();  // nor does this

任何帮助将不胜感激。我确实尝试在 Guzzle 源代码中查找类似于 getBody() 的函数，它可以处理请求，但我不是 PHP 专家，所以我没有想出任何有用的东西。我也在谷歌上搜索了很多，但发现只有人们在谈论从服务器取回响应，这对我来说没有问题。

Answer 1

您可以通过创建 Middleware 来完成这项工作.

use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\Middleware;
use Psr\Http\Message\RequestInterface;

$stack = HandlerStack::create();
// my middleware
$stack->push(Middleware::mapRequest(function (RequestInterface $request) {
    $contentsRequest = (string) $request->getBody();
    //var_dump($contentsRequest);

    return $request;
}));

$client = new Client([
    'base_uri' => 'http://www.example.com/api/',
    'handler' => $stack
]);

$response = $client->request('POST', 'itemupdate', [
    'auth' => [$username, $password],
    'json' => [
        "key" => "value",
        "key2" => "value",
    ]
]);

然而，这是在接收响应之前触发的。你可能想做这样的事情:

$stack->push(function (callable $handler) {
    return function (RequestInterface $request, array $options) use ($handler) {
        return $handler($request, $options)->then(
            function ($response) use ($request) {
                // work here
                $contentsRequest = (string) $request->getBody();
                //var_dump($contentsRequest);
                return $response;
            }
        );
    };
});