guzzlehttp/guzzle 在 ->send() 之前发送 HTTP 请求

Question

我正在尝试使用Guzzle来使用RESTful API。阅读Guzzle文档，我调用get和post等方法来配置请求，然后调用send来实际运行HTTP请求。

$request = $client->post('http://httpbin.org/post', array(), array(
    'custom_field' => 'my custom value',
    'file_field'   => '@/path/to/file.xml'
));
$response = $request->send();

然而，在我的情况下，似乎在调用post的过程中发送了一个HTTP请求，但没有字段。这是我的代码

define('CUST_ID', 'blahblah');
define('API_KEY', 'verysecure');
// Construct the underlying Guzzle client
$oClient = new GuzzleHttpClient(
    ['base_url' =>
    ['http://api.postmates.com/{version}/', ['version' => 'v1']],
    'defaults' => [
        // HTTP Basic auth header, username is api key, password is blank
        'auth'    => [API_KEY, ''],
    ]]);
$oRq = $oClient->post(
    "customers/" . CUST_ID . "/delivery_quotes",
    [], 
    ['pickup_address'  => '232 E Manhattan Ave, Denver, CO 80203',
     'dropoff_address' => '4400 Midwest St, Denver, CO 80205']);

发出的请求（没有POST参数）

POST /v1/customers/blahblah/delivery_quotes HTTP/1.1
Host: api.postmates.com
Authorization: Basic verysecure==
User-Agent: Guzzle/5.2.0 curl/7.37.1 PHP/5.6.0
Content-Length: 0

以及响应

HTTP/1.1 400 BAD REQUEST
Content-Type: application/json
Date: Fri, 13 Feb 2015 07:32:16 GMT
Server: nginx/1.1.19
Content-Length: 205
Connection: keep-alive
{"kind": "error", "code": "invalid_params", "params": {"dropoff_address": "This field is required.", "pickup_address": "This field is required."}, "message": "The parameters of your request were invalid."}

所以看起来我在验证，但没有传递任何post参数。我尝试使用setPostField方法设置POST字段，但没有成功。正如我所说，在这种情况下，似乎在调用setPostField之前发送了HTTP请求，在任何一种情况下，都在我调用send之前发送HTTP请求。

我试过guzzlehttp://guzzle5.2.0和5.0.0。

Answer 1

哇，看起来我在看两个文档，一个是针对较新的GuzzleHttpClient，一个针对较旧的GuzzleHttpClient。与新库的最大区别在于，如果您想推迟HTTP请求的调用，则需要调用createRequest。

新库下的工作代码

define('CUST_ID', 'blahblah');
define('API_KEY', 'verysecure');
// Construct the underlying Guzzle client
$oClient = new GuzzleHttpClient(
    ['base_url' =>
    ['http://api.postmates.com/{version}/', ['version' => 'v1']],
    'defaults' => [
        // HTTP Basic auth header, username is api key, password is blank
        'auth'    => [API_KEY, ''],
    ]]);
// Create the request
$oRq = $oClient->createRequest(
    'POST',
    "customers/" . CUST_ID . "/delivery_quotes",
    [ 'body' =>
        ['pickup_address'  => '232 E Manhattan Ave, Denver, CO 80203',
         'dropoff_address' => '4400 Midwest St, Denver, CO 80205']]);
// Send the request
$oRsp = $oClient->send($oRq);