在 Google Drive API 中设置文件夹权限

Question

尝试创建文件夹并设置其权限时出现以下错误。它无需传递文件元数据中的权限即可工作。

但我想创建具有特定用户权限的文件夹，每个用户都有自己的 g 邮件帐户。我怎样才能做到这一点？谢谢！

错误信息：

代码：

using Google.Apis.Auth.OAuth2;
using Google.Apis.Drive.v3;
using Google.Apis.Drive.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;


namespace DriveQuickstart
{
  class Program
  {
    // If modifying these scopes, delete your previously saved credentials
    // at ~/.credentials/drive-dotnet-quickstart.json
    static string[] Scopes = { DriveService.Scope.Drive };
    static string ApplicationName = "Drive API .NET Quickstart";

    static void Main(string[] args)
    {
      UserCredential credential;

      using (var stream =
      new FileStream("client_secret.json", FileMode.Open, FileAccess.ReadWrite))
      {
        string credPath = System.Environment.GetFolderPath(
        System.Environment.SpecialFolder.Personal);

        credPath = Path.Combine(credPath, ".credentials/drive-dotnet-quickstart.json");

        credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
        GoogleClientSecrets.Load(stream).Secrets,
        Scopes,
        "user",
        CancellationToken.None,
        new FileDataStore(credPath, true)).Result;
        Console.WriteLine("Credential file saved to: " + credPath);
      }

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

      Permission perm = new Permission();

      perm.Type = "user";
      perm.EmailAddress = "anotheruser@gmail.com";
      perm.Role = "owner";

      IList<Permission> perms = new List<Permission>();

      perms.Add(perm);

      var fileMetadata = new Google.Apis.Drive.v3.Data.File()
      {
        Name = "Invoices",
        MimeType = "application/vnd.google-apps.folder",
        Description = "Blah blah " + System.DateTime.Now.Hour + ":" + System.DateTime.Now.Minute + ":" + System.DateTime.Now.Second,
        Permissions = perms
      };

      var request = service.Files.Create(fileMetadata);
      request.Fields = "id";
      var file = request.Execute();
      Console.WriteLine("Folder ID: " + file.Id);

      Console.Read();

    }
  }
}

Answer 1

正如您在文档中看到的，该Permissions[]属性未指示为writable字段。因此，Permissions[]在创建文件之前填充资源主体并不是正确的方法；就像错误指示“资源体包含不可直接写入的字段”一样。

那么如何创建共享文件夹呢？

您必须首先创建文件夹，然后使用其Id.

您可以将代码修改为：

var fileMetadata = new Google.Apis.Drive.v3.Data.File()
{
    Name = "Invoices",
    MimeType = "application/vnd.google-apps.folder",
    Description = "Blah blah " + System.DateTime.Now.Hour + ":" + System.DateTime.Now.Minute + ":" + System.DateTime.Now.Second
};

Permission perm = new Permission();
perm.Type = "user";
perm.EmailAddress = "anotheruser@gmail.com";
perm.Role = "owner";

var request = service.Files.Create(fileMetadata);
request.Fields = "id";

try 
{
    service.Permissions.Create(perm, request.Execute().Id).Execute(); //Creating Permission after folder creation.
}
catch (Exception e) 
{
    Console.WriteLine("An error occurred: " + e.Message);
}