对于枪口< = 4 :

这是一个原始的发布请求，因此将JSON放在正文中即可解决问题

It's a raw post request so putting the JSON in the body solved the problem

$request = $this->client->post($url,array(
                'content-type' => 'application/json'
        ),array());
$request->setBody($data); #set body!
$response = $request->send();

return $response;