暴饮暴食 |异步请求 |无效的资源类型错误答案

【问题标题】：Guzzle | Async requests | Invalid resource type error暴饮暴食 |异步请求 |无效的资源类型错误
【发布时间】：2019-04-20 21:33:32
【问题描述】：

我正在尝试链接 http 请求，其中第二个请求取决于第一个请求的响应。我遇到了 Guzzle Client->sendAsync()。

我得到的错误：

exception: "InvalidArgumentException"
file: "...\guzzlehttp\psr7\src\functions.php"
line: 116
message: "Invalid resource type: array"

这是我目前所拥有的：

$client = new Client([...]);
$headers = [...];
$req = new Psr7\Request('GET', '/api/someapi', $headers);
$finalResponse = $client->sendAsync($req)->then(function($response1) use ($client) {
    $firstResponse = json_decode($response1->getBody()->getContents());
    // $firstResponse is an array
    $secondHeaders = [...];
    $secondRequest = new Psr7\Request('POST', 'api/anotherapi', $searchHeaders, [
         'json' => [
         'field1' => 'val1',
         'field2' => 'val2',
         'field3' => json_encode($firstResponse),
         'field4' => 'val3'
        ]
     ]);
     $secondResponse = $client->sendAsync($searchRequest)->function($response2) use ($client) {
          return $response2->getBody()->getContents();
     });
     return $secondResponse->wait();
});
return $finalResponse->wait();

关于我做错了什么有什么想法吗？

【问题讨论】：

标签： php laravel http guzzle

【解决方案1】：

您必须手动将 PHP 数组编码为 JSON 才能与 Psr7\Request 一起使用

$secondRequest = new Psr7\Request('POST', 'api/anotherapi', $searchHeaders, json_encode([
    'field1' => 'val1',
    'field2' => 'val2',
    'field3' => json_encode($firstResponse),
    'field4' => 'val3'
]));

或者用->postAsync()代替->sendAsync()，更简单

$client = new Client();
$headers = [];
$finalResponse = $client->getAsync('/api/someapi', ['headers' => $headers])
    ->then(function ($response1) use ($client) {
        $firstResponse = json_decode($response1->getBody()->getContents());
        // $firstResponse is an array
        $secondHeaders = [];
        $secondResponse = $client->postAsync('api/anotherapi', [
            'headers' => $secondHeaders,
            'json' => [
                'field1' => 'val1',
                'field2' => 'val2',
                'field3' => json_encode($firstResponse),
                'field4' => 'val3'
            ],
        ])->then(function ($response2) use ($client) {
            return $response2->getBody()->getContents();
        });

        // You don't need to call ->wait() here, Guzzle will resolve the promise for you
        return $secondResponse;
    });

return $finalResponse->wait();

【讨论】：

【解决方案2】：

如果你想使用“json”传递参数，那么你必须修改你的代码，如下所示：

$secondRequest = new Psr7\Request('POST', 'api/anotherapi', $searchHeaders);
     $secondResponse = $client->sendAsync($searchRequest, [
         'json' => [
         'field1' => 'val1',
         'field2' => 'val2',
         'field3' => json_encode($firstResponse),
         'field4' => 'val3'
        ])->function($response2) use ($client) {
          return $response2->getBody()->getContents();
     });

请参阅此处的文档 (http://docs.guzzlephp.org/en/stable/quickstart.html)：

An easy way to upload JSON data and set the appropriate header is using the json request option:

$r = $client->request('PUT', 'http://httpbin.org/put', [
    'json' => ['foo' => 'bar']
]);

查看@Alexey Shokov 的答案了解更多详情。

【讨论】：