我正在尝试获取我在谷歌驱动器中可以看到的所有文件夹的列表。 所以我可以检查一个文件夹，是否已经存在。如果没有，那么我可以创建一个。 但谷歌驱动PHP API返回空文件夹列表，虽然我可以在我的谷歌驱动器中看到很多文件夹（通过浏览器）。
这是我正在使用的课程： -
<?php
class gdrive{
//credentials (get those from google developer console https://console.developers.google.com/)
var $clientId = "1047996724365-MyID.apps.googleusercontent.com";
var $clientSecret = "MySecret";
var $redirectUri = 'http://localhost/google_drive2/gdrive_upload.php';
//variables
var $fileRequest;
var $mimeType;
var $filename;
var $path;
var $client;
function __construct(){
require_once 'src/Google/autoload.php'; // get from here https://github.com/google/google-api-php-client.git
require_once 'src/Google/Client.php'; // get from here https://github.com/google/google-api-php-client.git
//require_once 'src/Google/Drive.php'; // get from here https://github.com/google/google-api-php-client.git
$this->client = new Google_Client();
}
function initialize(){
//echo "<br/>initializing class\n";
$client = $this->client;
$client->setClientId($this->clientId);
$client->setClientSecret($this->clientSecret);
$client->setRedirectUri($this->redirectUri);
$client->addScope(
"https://www.googleapis.com/auth/drive",
"https://www.googleapis.com/auth/drive.appfolder");
$refreshToken = file_get_contents(__DIR__ . "/token.txt");
$client->refreshToken($refreshToken);
$tokens = $client->getAccessToken();
$client->setAccessToken($tokens);
//$client->setDefer(true);
$this->processFile();
}
function processFile(){
$fileRequest = $this->fileRequest;
//echo "Process File $fileRequest\n";
$path_parts = pathinfo($fileRequest);
$this->path = $path_parts['dirname'];
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$this->mimeType = finfo_file($finfo, $fileRequest);
finfo_close($finfo);
//echo "Mime type is " . $this->mimeType . "\n";
$this->upload();
}
/**
* Get the folder ID if it exists, if it doesnt exist, create it and return the ID
*
* @param Google_DriveService $service Drive API service instance.
* @param String $folderName Name of the folder you want to search or create
* @param String $folderDesc Description metadata for Drive about the folder (optional)
* @return Google_Drivefile that was created or got. Returns NULL if an API error occured
*/
function getFolderExistsCreate($service, $folderName, $folderDesc) {
error_reporting(E_ALL); ini_set('display_errors', 1);
$parameters['q'] = "mimeType='application/vnd.google-apps.folder' and trashed=false";
$files = $service->files->listFiles($parameters);
$found = false;
// Go through each one to see if there is already a folder with the specified name
print_r($files);exit; /****************RESPONSE ON THIS LINE *********/
foreach ($files['items'] as $item) {
if ($item['title'] == $folderName) {
$found = true;
return $item['id'];
break;
}
}
// If not, create one
if ($found == false) {
$folder = new Google_Service_Drive_DriveFile();
//Setup the folder to create
$folder->setTitle($folderName);
if(!empty($folderDesc))
$folder->setDescription($folderDesc);
$folder->setMimeType('application/vnd.google-apps.folder');
//Create the Folder
try {
$createdFile = $service->files->insert($folder, array(
'mimeType' => 'application/vnd.google-apps.folder',
));
// Return the created folder's id
echo $createdFile->id;
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
}
}
exit;
/*
$client = new Google_Client();
$client->setClientId($this->clientId);
$client->setClientSecret($this->clientSecret);
$client->setRedirectUri($this->redirectUri);
$refreshToken = file_get_contents(__DIR__ . "/token.txt");
$client->refreshToken($refreshToken);
$tokens = $client->getAccessToken();
$client->setAccessToken($tokens);
$client->setDefer(true);
$service = new Google_Service_Drive($client);
// List all user files (and folders) at Drive root
$parameters['q'] = "mimeType='application/vnd.google-apps.folder' and trashed=false";
$files = $service->files->listFiles($parameters);
print_r($files);exit;
*/
$found = false;
// Go through each one to see if there is already a folder with the specified name
foreach ($files['items'] as $item) {
if ($item['title'] == $folderName) {
$found = true;
return $item['id'];
break;
}
}
// If not, create one
if ($found == false) {
$folder = new Google_Service_Drive_DriveFile();
//Setup the folder to create
$folder->setTitle($folderName);
if(!empty($folderDesc))
$folder->setDescription($folderDesc);
$folder->setMimeType('application/vnd.google-apps.folder');
//Create the Folder
try {
$createdFile = $service->files->insert($folder, array(
'mimeType' => 'application/vnd.google-apps.folder',
));
// Return the created folder's id
return $createdFile->id;
} catch (Exception $e) {
print "An error occurred: " . $e->getMessage();
}
}
}
function upload(){
$client = $this->client;
$service = new Google_Service_Drive($client);
$folderName='aaaaaaa';
$folderDesc='Folder Desc';
// Setup the folder you want the file in, if it is wanted in a folder
if(isset($folderName)) {
if(!empty($folderName)) {
//$parent = new Google_Service_Drive_ParentReference();
//$parent->setId(getFolderExistsCreate($service, $folderName, $folderDesc));
$parent=$this->getFolderExistsCreate($service, $folderName, $folderDesc);
print_r($parent);exit;
$file->setParents(array($parent));
}
}
$file = new Google_Service_Drive_DriveFile(array(
'name' => $this->filename));
$file->title = "a.txt";
$chunkSizeBytes = 1 * 1024 * 1024;
$fileRequest = $this->fileRequest;
$mimeType = $this->mimeType;
//$request = $service->files->create($file);
// Create a media file upload to represent our upload process.
$media = new Google_Http_MediaFileUpload(
$client,
$request,
$mimeType,
null,
true,
$chunkSizeBytes
);
$media->setFileSize(filesize($fileRequest));
// Upload the various chunks. $status will be false until the process is
// complete.
$status = false;
$handle = fopen($fileRequest, "rb");
// start uploading
//echo "Uploading: " . $this->filename . "\n";
$filesize = filesize($fileRequest);
// while not reached the end of file marker keep looping and uploading chunks
while (!$status && !feof($handle)) {
$chunk = fread($handle, $chunkSizeBytes);
$status = $media->nextChunk($chunk);
}
// The final value of $status will be the data from the API for the object
// that has been uploaded.
$result = false;
if($status != false) {
$result = $status;
}
fclose($handle);
// Reset to the client to execute requests immediately in the future.
$client->setDefer(false);
?>https://drive.google.com/open?id=<?= $result->id ?><?php
}
}
?>
但它回复了这个回应： -
Google_Service_Drive_FileList Object ( [collection_key:protected] => files [filesType:protected] => Google_Service_Drive_DriveFile [filesDataType:protected] => array [kind] => drive#fileList [nextPageToken] => [internal_gapi_mappings:protected] => Array ( ) [modelData:protected] => Array ( [incompleteSearch] => [files] => Array ( ) ) [processed:protected] => Array ( ) )
请告诉我哪里错了？
答案 0 :(得分：2)
您可能需要先查看此相关的SO post，其中提到的是，出于安全原因，我们无法列出用户云端硬盘帐户中的所有文件。
此外，Drive API仅授予对两类文件的访问权限：
通过建议的链接，您可能需要manage sharing Google云端硬盘中的文件和文件夹。此外，除了使用Permissions collection通过API管理权限外，应用还可以显示标准的Google云端硬盘共享对话框，以便用户共享文件。
有了权限，您可以继续使用Files.list并在查询参数中指定：
('root' in parents and mimeType = 'application/vnd.google-apps.folder')
那应该返回根目录中的文件夹。使用Try-it进行测试。
您可能需要查看以下链接以获取更多信息：