php - 从亚马逊获取 "The authorization grant type is not supported by the authorization server"

Question

我正在尝试获取访问 token ，但是我收到了这个错误

{"error_description":"授权服务器不支持授权授予类型","error":"unsupported_grant_type"}

$code =  $_GET['code'];

$postfields = array(
    'grant_type'=>'authorization_code',
    'code'=>$code,
    'redirect_uri='=>'example/myTest.php',
    'client_id'=>'amzn1.application-oa2-client.xxxxxxxxxxx',
    'client_secret'=>'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
    );
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.amazon.com/auth/o2/token');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/x-www-form-urlencoded']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($httpRequest, CURLOPT_HEADER, 1);
// Edit: prior variable $postFields should be $postfields;
curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // On dev server only!
$result = curl_exec($ch);

print_r($result);

Answer 1

从

更改 CURLOPT_HTTPHEADER

内容类型:application/x-www-form-urlencoded

到

内容类型:application/json