如何以编程方式提供凭据以在c＃或vb.net中使用google drive api？

我制作了一个程序，使用谷歌驱动器api从谷歌驱动器上的文件中读取数据。

第一次运行应用程序时，它会打开一个Web浏览器，要求使用google驱动器帐户登录。

我想为应用程序提供用户名和密码，以便自动获取凭据，以便用户无需知道我的Google云端硬盘帐户的用户名和密码。

这是vb.net中的代码：

Dim credential As UserCredential Using stream = New FileStream("client_secret.json", FileMode.Open, FileAccess.Read) Dim credPath As String = 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) End Using //I want to provide the username and password in the app so that it doesn't open a web browser asking for them ' Create Drive API service. Dim initializer = New BaseClientService.Initializer initializer.HttpClientInitializer = credential initializer.ApplicationName = ApplicationName Dim service = New DriveService(initializer) ' Define parameters of request. Dim listRequest As FilesResource.ListRequest = service.Files.List() listRequest.PageSize = 10 listRequest.Fields = "nextPageToken, files(id, name)" ' List files. Dim files As IList(Of Google.Apis.Drive.v3.Data.File) = listRequest.Execute().Files 

这是c＃中的代码：

  UserCredential credential; using (var stream = new FileStream("client_secret.json", FileMode.Open, FileAccess.Read)) { 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); } //I want to provide the username and password in the app so that it doesn't open a web browser asking for them // Create Drive API service. var service = new DriveService(new BaseClientService.Initializer() { HttpClientInitializer = credential, ApplicationName = ApplicationName, }); // Define parameters of request. FilesResource.ListRequest listRequest = service.Files.List(); listRequest.PageSize = 10; listRequest.Fields = "nextPageToken, files(id, name)"; // List files. IList files = listRequest.Execute() .Files; 

Answer 1

很遗憾你不能嵌入像这样的登录名和密码。 我还有其他选择。

听起来您正试图允许用户访问您的个人Google云端硬盘帐户。 在这种情况下，您应该使用服务帐户和Not Oauth2。 Oauth2要求用户以网页的forms进行交互，以授予应用程序访问用户自己的谷歌驱动器帐户的权限。 虽然服务帐户是由开发人员在后台预先授权的。

将服务帐户视为虚拟用户。 您可以通过使用服务帐户电子邮件地址共享Google云端硬盘中的文件夹，授予其访问您的Google云端硬盘帐户的权限。

以下是使用服务帐户进行身份validation的示例代码。

 /// 
 /// Authenticating to Google using a Service account /// Documentation: https://developers.google.com/accounts/docs/OAuth2#serviceaccount /// 
 /// From Google Developer console https://console.developers.google.com /// Location of the .p12 or Json Service account key file downloaded from Google Developer console https://console.developers.google.com /// AnalyticsService used to make requests against the Analytics API public static DriveService AuthenticateServiceAccount(string serviceAccountEmail, string serviceAccountCredentialFilePath) { try { if (string.IsNullOrEmpty(serviceAccountCredentialFilePath)) throw new Exception("Path to the service account credentials file is required."); if (!File.Exists(serviceAccountCredentialFilePath)) throw new Exception("The service account credentials file does not exist at: " + serviceAccountCredentialFilePath); if (string.IsNullOrEmpty(serviceAccountEmail)) throw new Exception("ServiceAccountEmail is required."); // These are the scopes of permissions you need. It is best to request only what you need and not all of them string[] scopes = new string[] { AnalyticsReportingService.Scope.Analytics }; // View your Google Analytics data // For Json file if (Path.GetExtension(serviceAccountCredentialFilePath).ToLower() == ".json") { GoogleCredential credential; using (var stream = new FileStream(serviceAccountCredentialFilePath, FileMode.Open, FileAccess.Read)) { credential = GoogleCredential.FromStream(stream) .CreateScoped(scopes); } // Create the Analytics service. return new DriveService(new BaseClientService.Initializer() { HttpClientInitializer = credential, ApplicationName = "Drive Service account Authentication Sample", }); } else if (Path.GetExtension(serviceAccountCredentialFilePath).ToLower() == ".p12") { // If its a P12 file var certificate = new X509Certificate2(serviceAccountCredentialFilePath, "notasecret", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable); var credential = new ServiceAccountCredential(new ServiceAccountCredential.Initializer(serviceAccountEmail) { Scopes = scopes }.FromCertificate(certificate)); // Create the Drive service. return new DriveService(new BaseClientService.Initializer() { HttpClientInitializer = credential, ApplicationName = "Drive Authentication Sample", }); } else { throw new Exception("Unsupported Service accounts credentials."); } } catch (Exception ex) { Console.WriteLine("Create service account DriveService failed" + ex.Message); throw new Exception("CreateServiceAccountDriveFailed", ex); } } } 

用法：

  var service = AuthenticateServiceAccount("[e-mail]", @"C:\Users\linda_l\Documents\Diamto Test Everything Project\ServiceAccountTest\Diamto Test Everything Project-145ed16d5d47.json"); 

从我的非官方谷歌驱动器示例项目serviceaccount.cs中删除了代码我还有一篇文章更深入到服务帐户Google Developer Console服务帐户