4

我正在尝试获取 OAuth 访问令牌以将一些数据导入融合表。我正在尝试使用 Google API PHP 客户端。我为此创建了一个服务帐户，并且正在使用代码，主要来自serviceAccount示例：

function access_token()
{
    $client = new Google_Client();
    $client->setAuthClass ('Google_OAuth2');
    // ^ Don't know if this line is required,
    // ^ but it fails just as well without it.
    $client->setApplicationName ('Mysite.dom.ain');
    $client->setAssertionCredentials (new Google_AssertionCredentials
        (   'MANY-NUMBERS-LETTERS-DASHES@developer.gserviceaccount.com',
            array ('https://www.googleapis.com/auth/fusiontables'),
            file_get_contents ('path/to/my/privatekey.p12') ));
    $client->setClientId ('NUMBERS-LETTERS-DASHES.apps.googleusercontent.com');
    $client->authenticate();
    // ^ Also fails equally good with and without this line.
    return $client->getAccessToken();
}

一点调试输出显示$client->authenticate()返回true，但$client->getAcessToken()返回null。不抛出异常。我觉得我在做一些根本错误的事情。如果是这样，请原谅我的愚蠢并指出我正确的方向。

4

2 回答 2

6

您不需要 authenticate() 调用，但需要调用refreshTokenWithAssertion()来刷新底层访问令牌。如果您使用客户端库发出签名请求，那么如果底层访问令牌已过期，它将懒惰地为您发出此调用。

刷新 access_token 的 API 请求很昂贵，并且配额较低，因此您需要缓存 access_token。

// Set your client id, service account name, and the path to your private key.
// For more information about obtaining these keys, visit:
// https://developers.google.com/console/help/#service_accounts
const CLIENT_ID = 'INSERT_YOUR_CLIENT_ID';
const SERVICE_ACCOUNT_NAME = 'INSERT_YOUR_SERVICE_ACCOUNT_NAME';

// Make sure you keep your key.p12 file in a secure location, and isn't
// readable by others.
const KEY_FILE = '/super/secret/path/to/key.p12';

$client = new Google_Client();
$client->setApplicationName("Google FusionTable Sample");

// Set your cached access token. Remember to store the token in a real database instead of $_SESSION.
session_start();
if (isset($_SESSION['token'])) {
 $client->setAccessToken($_SESSION['token']);
}

$key = file_get_contents(KEY_FILE);
$client->setAssertionCredentials(new Google_AssertionCredentials(
    SERVICE_ACCOUNT_NAME,
    array('https://www.googleapis.com/auth/fusiontables'),
    $key)
);

$client->setClientId(CLIENT_ID);

if ($client->getAuth()->isAccessTokenExpired()) {
  $client->getAuth()->refreshTokenWithAssertion();
}

// Get the json encoded access token.
$token = $client->getAccessToken();
于 2012-11-27T17:39:20.770 回答
1

我认为你所做的一切都是正确的，现在你有两个选择：

  • 使用你$client的类似的东西拨打服务电话
    $service = new Google_FusiontablesService($client);
    $selectQuery = "select * from 1AwxQ46kfmPoYoq38e5CopJOWkCo_9GUU_ucD6zI";
    $service->query->sql($selectQuery)
  • 或调用内部函数refreshTokenWithAssertion()以获取您的令牌：
    $client::$auth->refreshTokenWithAssertion();
    $token = $client->getAccessToken(); //this should work now

对于这两种 情况，我的 GitHub 存储库中都有示例。

于 2012-11-27T11:29:38.180 回答