我制作了一个程序，使用google drive api从google驱动器上的文件中读取数据。
首次运行该应用时，它会打开一个网络浏览器，要求使用Google云端硬盘帐户登录。
我想为应用提供用户名和密码，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<Google.Apis.Drive.v3.Data.File> files = listRequest.Execute()
.Files;
答案 0 :(得分：5)
很遗憾，您无法嵌入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要求用户以网页的形式进行交互，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。
以下是一些使用服务帐户进行身份验证的示例代码。
/// <summary>
/// Authenticating to Google using a Service account
/// Documentation: https://developers.google.com/accounts/docs/OAuth2#serviceaccount
/// </summary>
/// <param name="serviceAccountEmail">From Google Developer console https://console.developers.google.com</param>
/// <param name="serviceAccountCredentialFilePath">Location of the .p12 or Json Service account key file downloaded from Google Developer console https://console.developers.google.com</param>
/// <returns>AnalyticsService used to make requests against the Analytics API</returns>
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("1046123799103-6v9cj8jbub068jgmss54m9gkuk4q2qu8@developer.gserviceaccount.com", @"C:\Users\linda_l\Documents\Diamto Test Everything Project\ServiceAccountTest\Diamto Test Everything Project-145ed16d5d47.json");
从我的非官方google驱动示例项目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 service account