使用google-api-php-client下载文件

Question

我在尝试使用https://code.google.com/p/google-api-php-client/上的php客户端从谷歌云存储下载文件时遇到问题

我已经对自己进行了身份验证，使用下面的代码，我可以返回一个包含指向我的文件的链接的对象

$this->storageService = new Google_StorageService($this->client);
$this->objects = $this->storageService->objects;

$options = array(
    'prefix' => 'REPORT_NAME_2013-07-01'
);
$bucket_contents = $this->objects->listObjects($bucket, $options);

反应是这样的.

{

 "kind": "storage#object",
 "id": "<bucket>/<report>.csv/1001",
 "selfLink": "https://www.googleapis.com/storage/v1beta2/b/<bucket>/o/<report>.csv",
 "name": "<report>.csv",
 "bucket": "<bucket>",
 "generation": "1001",
 "metageneration": "1",
 "contentType": "application/csv",
 "updated": "2013-07-22T10:21:08.811Z",
 "size": "806",
 "md5Hash": "wT01i....",
 "mediaLink": "https://www.googleapis.com/storage/v1beta2/b/<bucket>/o/<report>.csv?generation=1001&alt=media",
 "owner": {
  "entity": "user-00b........",
  "entityId": "00b490......."
 },
 "crc32c": "8y........",
 "etag": "CPjZ.........."
}

但是如何使用Google PHP客户端下载文件呢?我不能使用file_get_contents，因为它不知道身份验证细节。我找到的最好的东西是使用Google_Client的东西，但是响应只包含元数据，没有对象/文件内容

$request = new Google_HttpRequest($object['selfLink']);
$response = $this->client->getIo()->authenticatedRequest($request);

Answer 1

老问题，但它让我找到了正确的方向。selfLink是指向元数据请求的链接，您需要mediaLink来获取实际的对象数据，并且它是getAuth而不是getIo。

此脚本将输出文件内容(假设您已经初始化了一个$client对象)：

$service = new Google_Service_Storage($client);
$object = $service->objects->get('bucketname', 'objectname');
$request = new Google_Http_Request($object->getMediaLink());
$response = $client->getAuth()->authenticatedRequest($request);
echo $response->getResponseBody();

Answer 2

这对于apiclient ~2.0无效，请参阅github中的UPGRADING.md文件。

使用apiclient ~2.0的工作代码应该是：

$service = new Google_Service_Storage($client);
$object = $service->objects->get('bucketname', 'objectname');

// create an authorized HTTP client
$httpClient = $client->authorize();

$response = $httpClient->request('GET', $object->getMediaLink());

echo $response->getBody();

或授权现有的Guzzle客户端：

$service = new Google_Service_Storage($client);
$object = $service->objects->get('bucketname', 'objectname');

// add authorization to an existing client
$httpClient = new GuzzleHttp\Client();
$httpClient = $client->authorize($httpClient);

$response = $httpClient->request('GET', $object->getMediaLink());

echo $response->getBody();

Answer 3

要下载文件，您需要授予读者访问allUsers的权限(您可以从google web控制台或使用google php api进行)。