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我已经阅读了一些问题，我尝试了这些示例，它们对我有用，这里是链接： -链接 1 -链接 2 -链接 3

但是，我试图完成的有点不同，我试图修改/上传一个包含纯文本的 .DAT 文件。我能够毫无问题地读取文件内容，但我总是收到 400 错误请求（协议错误）。这是我的代码。

   DocumentsService service = new DocumentsService("Man");
   service.setUserCredentials(UserName, Passwod);

   DocumentsListQuery fileQuery = new DocumentsListQuery();
   fileQuery.Query = User.FileName;
   fileQuery.TitleExact = true;
   DocumentsFeed feed = service.Query(fileQuery);

   //Here I get my file to update
   DocumentEntry entry = (DocumentEntry)feed.Entries[0];

    // Set the media source
  //Here I have tried application/octet-stream also
  entry.MediaSource = new MediaFileSource(DataStream, User.FileName, text/plain");

  // Instantiate the ResumableUploader component.
     ResumableUploader uploader = new ResumableUploader();

  // Set the handlers for the completion and progress events
  uploader.AsyncOperationCompleted += new AsyncOperationCompletedEventHandler(OnDone);
  uploader.AsyncOperationProgress += new syncOperationProgressEventHandler(OnProgress);

 ClientLoginAuthenticator authenticator = new ClientLoginAuthenticator("Man", ServiceNames.Documents,Credentials);
 Uri updateUploadUrl = new Uri(UploadUrl);
 AtomLink aLink = new AtomLink(updateUploadUrl.AbsoluteUri);
 aLink.Rel = ResumableUploader.CreateMediaRelation;
 entry.Links.Add(aLink);

// Start the update process.
uploader.UpdateAsync(authenticator,entry,new object());

谢谢。

编辑：这就是我解决它的方法。感谢克劳迪奥指导我正确的方向

  1. 下载示例应用程序：下载示例 (.zip)
  2. 从 SampleHelper Project 将这些实施到您的项目中：AuthorizationMgr、INativeAuthorizationFlow、LoopbackServerAuthorizationFlow、WindowTitleNativeAuthorizationFlow

  3. 将其与以下代码一起使用：

    //Call Authorization method... (omitted)

File body = new File();
body.Title = title;
body.Description = description;
body.MimeType = mimeType;
byte[] byteArray = System.IO.File.ReadAllBytes(filename);
MemoryStream stream = new MemoryStream(byteArray);

try {
  FilesResource.InsertMediaUpload request = service.Files.Insert(body, stream, mimeType);
  request.Upload();

  File file = request.ResponseBody;

  // Uncomment the following line to print the File ID.
  // Console.WriteLine("File ID: " + file.Id);

  return file;
} catch (Exception e) {
  Console.WriteLine("An error occurred: " + e.Message);
  return null;
}
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1 回答 1

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每当服务器返回 400 Bad Request 时，它还包含一条描述性错误消息，告诉您请求中的无效内容。如果你不能从调试器中得到它，你应该安装 Fiddler 并捕获 HTTP 请求和响应。

我给你的另一个建议是开始使用更新的 Drive API 而不是 Documents List API。这是一个 5 分钟的 C# 快速入门示例，展示了如何将文件上传到 Google Drive：

https://developers.google.com/drive/quickstart

于 2012-08-31T22:19:36.037 回答