Api Oauth2访问令牌返回；“无效客户端”；错误

我在获取访问令牌时遇到问题。获取身份验证代码后，当我调用get\u access\u令牌时，它返回“invalid\u client”错误。我对此进行了研究，但没有任何帮助。请看我的代码，帮我解决这个问题。先谢谢你。 这是我的密码：

public function get_access_token($zoho_code)
{
    $headers = array(

    );
    $taskurl = 'https://accounts.zoho.com/oauth/v2/token';
    $cdata = array(
        'code' => $zoho_code,
        'grant_type' => 'authorization_code',
        'client_id' =>  $this->client_id,
        'client_secret' => $this->client_secret_id,
        'redirect_uri' => 'http://localhost/callback.php',
        'scope' => 'ZohoMail.accounts.UPDATE,ZohoMail.accounts.READ,ZohoMail.partner.organization.READ,ZohoMail.partner.organization.UPDATE,ZohoMail.organization.accounts.CREATE,ZohoMail.organization.accounts.UPDATE,ZohoMail.organization.accounts.READ,ZohoMail.organization.domains.CREATE,ZohoMail.organization.domains.UPDATE,ZohoMail.organization.domains.DELETE,ZohoMail.organization.domains.READ',
        'state' => '55555sfdfsdfgbcv',

    );
    $curlresult = $this->docurl($taskurl, $cdata, $headers);

    return $curlresult;
}

public function docurl($taskurl, $cdata, $headers, $method = 'post',$sendjson=true) {

    $ch = curl_init();

    if ($method == 'get') {
        if ($cdata) {
            $query = '?' . http_build_query($cdata);
            $taskurl .= $query;
        }
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET');
    } elseif ($method == 'delete') {
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
    } elseif ($method == 'put') {
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
    } elseif ($method == 'patch') {
        if($sendjson) $cdata = json_encode($cdata);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $cdata);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH');
    } else {

        if($sendjson) $cdata = json_encode($cdata);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $cdata);
    }
    curl_setopt($ch, CURLOPT_URL, $taskurl);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    $res = curl_exec($ch);
    $information = curl_getinfo($ch);

    print_r($information);
    print_r($cdata);

    curl_close($ch);
    $resj = json_decode($res);
     return $resj;

}

---

如果我正确地阅读了您的代码，那么您将发送您的

client\u secret

，作为POST请求正文的一部分，编码为JSON

---

您应该使用

application/x-www-form-urlencoded

正文发出POST请求，并且您应该将

Authorization

标题和

client\u secret

编码在基本方案中。有关更多信息，请参阅。

我尝试了您所写的内容。它也不起作用。在ZohoMail API文档中，我还编写了如下形式使用它：POST oauth/v2/token HOST:：Query String:？code=1000.******************************************f160&grant_type=authorization_code&client_id=1000.R2Z0W.***************************************Q5EN&client_secret=39c*******************************************921b&redirect_uri=&scope=VirtualOffice.folders.READ