Google API权限不足列表文件 [英] Google API Insufficient Permissions listing files

问题描述

我正尝试创建一个应用（使用云端硬盘服务帐户）列出给定文件夹中的文件，并允许用户搜索这些文件的内容。我得到了一个 403权限不足的错误，我无法解释。

我编辑了 Google API PHP客户端示例：

  $ client_id ='[REMOVED]'; //客户ID 
 $ service_account_name ='[REMOVED]'; //电子邮件地址
 $ key_file_location ='key.p12'; //key.p12 
 
 $ client = new Google_Client（）; 
 $ client-> setApplicationName（Client_Library_Examples）; 
服务=新Google_Service_Drive（$客户）; 
 
 if（isset（$ _ SESSION ['service_token']））{
 $ client-> setAccessToken（$ _ SESSION ['service_token']）; 
} 
 
 $ key = file_get_contents（$ key_file_location）; 
 $ cred = new Google_Auth_AssertionCredentials（
 $ service_account_name，
 array（
'https://www.googleapis.com/auth/drive'，
'https： //www.googleapis.com/auth/drive.file'
），
 $ key 
）; 
 
 $ client-> setAssertionCredentials（$ cred）; 
 $ b $ if（$ client-> getAuth（） - > isAccessTokenExpired（））{
 $ client-> getAuth（） - > refreshTokenWithAssertion（$ cred）; 
} 
 
 $ _SESSION ['service_token'] = $ client-> getAccessToken（）; 
 
 $ result = array（）; 
 $ pageToken = NULL; 
 
 do {
 try {
 $ parameters = array（）; 
 if（$ pageToken）{
 $ parameters ['pageToken'] = $ pageToken; 
} 
 
 $ files = $ service-> files-> listFiles（$ parameters）; 
 
 $ result = array_merge（$ result，$ files-> getItems（））; 
 
 $ pageToken = $ files-> getNextPageToken（）; 
} catch（Exception $ e）{
 echo< br />发生错误：。 $ E->的getMessage（）; 
 $ pageToken = NULL; 
} 
} while（$ pageToken）; 
 
 echo< pre>; 
 print_r（$ result）; 
 echo< / pre>; 
 
 echo< br />执行完成。; 
  

确切的错误信息（ $ e-> getMessage（）上面的 catch 中的code>是调用GET时出错https://www.googleapis.com/drive/v2/files :( 403）权限不足 - 我认为/ drive和/drive.file作用域为我提供了我需要的所有权限？

解决方案<首先，请注意：您正在请求 Drive 作用域和 Drive.File 范围。后者是前者的子集，因此不需要请求它。您应该删除'https://www.googleapis.com/auth/drive.file'行。

至于权限不足，这可能是由于开发者控制台配置不正确。您应该仔细检查是否为此特定项目启用了API和SDK。

I am trying to create an app that (using a Drive service account) lists files in a given folder and allows users to search the content of those files. I am getting a 403 Insufficient Permissions error which I cannot explain.

I have edited the code from the Google API PHP Client Example:

$client_id = '[REMOVED]'; //Client ID
$service_account_name = '[REMOVED]'; //Email Address
$key_file_location = 'key.p12'; //key.p12

$client = new Google_Client();
$client->setApplicationName("Client_Library_Examples");
service = new Google_Service_Drive($client);

if (isset($_SESSION['service_token'])) {
    $client->setAccessToken($_SESSION['service_token']);
}

$key  = file_get_contents($key_file_location);
$cred = new Google_Auth_AssertionCredentials(
    $service_account_name,
    array(
        'https://www.googleapis.com/auth/drive',
        'https://www.googleapis.com/auth/drive.file'
    ),
    $key
);

$client->setAssertionCredentials($cred);

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

$_SESSION['service_token'] = $client->getAccessToken();

$result = array();
$pageToken = NULL;

do {
    try {
        $parameters = array();
        if ($pageToken) {
            $parameters['pageToken'] = $pageToken;
        }

        $files = $service->files->listFiles($parameters);

        $result = array_merge($result, $files->getItems());

        $pageToken = $files->getNextPageToken();
    } catch (Exception $e) {
        echo "<br/>An error occurred: " . $e->getMessage();
        $pageToken = NULL;
    }
} while ($pageToken);

echo "<pre>";
print_r($result);
echo "</pre>";

echo "<br />Execution completed.";

The exact error message ($e->getMessage() in the catch above) is Error calling GET https://www.googleapis.com/drive/v2/files: (403) Insufficient Permission - I thought the /drive and /drive.file scopes gave me all the permissions I needed?

解决方案

First, a quick note: You are requesting both the Drive scope and the Drive.File scope. The later is a subset of the former, so there is no need to request it. You should remove 'https://www.googleapis.com/auth/drive.file' line.

As to the insufficient permissions, this is possibility due to incorrect Developer Console configuration. You should double check that both the API and SDK are enabled for this particular project.

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