通过 Google Drive Api 获取文件夹

Question

我正在使用以下服务代码来检索用户的文件夹。 我启用了驱动器 api 并想使用服务帐户...

驱动器中有文件夹，但执行没有返回任何文件夹。

可能缺少什么？

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Services;

namespace GoogleDriveService.Business.Services;

public class GoogleApiDriveService
{
    private DriveService _driveService;

    public GoogleApiDriveService()
    {
        var credentialsFilePath = "myservice-12aaae22210a.json";
        GoogleCredential credential = GoogleCredential.FromFile(credentialsFilePath)
                                                      .CreateScoped([DriveService.Scope.Drive,
                                                                    DriveService.Scope.DriveFile,
                                                                    DriveService.Scope.DriveReadonly]);

        var initializer = new BaseClientService.Initializer { HttpClientInitializer = credential };
        _driveService = new DriveService(initializer);
    }

    public List<Google.Apis.Drive.v3.Data.File> GetFolders()
    {
        var request = _driveService.Files.List();
        request.IncludeItemsFromAllDrives = true;
        request.SupportsAllDrives = true;
        request.Q = "mimeType='application/vnd.google-apps.folder'";

        var result = request.Execute();
        return result.Files.ToList();
    }
}

我启用了驱动器 API，下载服务帐户密钥，然后运行代码。

如果我打电话给 about 我会得到回复...

var req = _driveService.About.Get();
req.Fields = "*";
var about = req.Execute();`

Answer 1

about.get方法获取有关用户、用户的云端硬盘和系统功能的信息。

关于回复

这不会为您列出文件。

为此，您需要使用 files.list 方法

// Create the  Drive service.
var service = new DriveService(new BaseClientService.Initializer()
{
    HttpClientInitializer = credential
});

var result = await service.Files.List().ExecuteAsync();

foreach (var file in result.Files)
{
    Console.WriteLine(file.Id + " : " + file.Name + " - "  + file.MimeType  );
}