C# Google Api 上传流

Question

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

然而， 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. 从以下位置下载示例应用程序：Download Sample (.zip)
2. 从 SampleHelper Project 为您的项目实施这些：AuthorizationMgr、INativeAuthorizationFlow、LoopbackServerAuthorizationFlow、WindowTitleNativeAuthorizationFlow

3. 将此代码与此代码一起使用：

   //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;
   }
   

Answer 1

每当服务器返回 400 Bad Request 时，它还会包含一条描述性错误消息，说明您的请求中的无效内容。如果无法从调试器中获取，则应安装 Fiddler 并捕获 HTTP 请求和响应。

我给您的另一个建议是开始使用较新的 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