Question

我们有一个C＃服务/ ASP.NET组合，我们需要定期将文件上传到Google云端硬盘。设计将是在ASP.NET项目中设置要连接的人，然后允许该服务上传文件。

我已经开始了该项目，使用nuget下载了所有库，在google中设置了我的clientid和secret，但是一切似乎都很简单，但是我的问题与我连接到别人的google drive实例有关？

我知道我们需要连接到驱动器api并获得令牌BUT，如果我们想连接到“约翰尼客户” google驱动器实例……我们如何在C＃中启动它？

谢谢！

Answer 1

为了从C＃应用程序访问共享驱动器，您可以使用服务帐户。此功能的想法是拥有一个帐户，您可以通过该帐户以编程方式登录并发出请求，而无需像使用“常规” OAuth2流那样显式允许该应用程序。您可以了解有关如何使用和创建服务帐户here的更多信息。

使用服务帐户的示例C＃代码：

using System;
using System.Security.Cryptography.X509Certificates;

using Google.Apis.Auth.OAuth2;
using Google.Apis.Plus.v1;
using Google.Apis.Plus.v1.Data;
using Google.Apis.Services;

namespace Google.Apis.Samples.PlusServiceAccount
{
    /// <summary>
    /// This sample demonstrates the simplest use case for a Service Account service.
    /// The certificate needs to be downloaded from the Google API Console
    /// <see cref="https://console.developers.google.com/">
    ///   "Create another client ID..." -> "Service Account" -> Download the certificate,
    ///   rename it as "key.p12" and add it to the project. Don't forget to change the Build action
    ///   to "Content" and the Copy to Output Directory to "Copy if newer".
    /// </summary>
    public class Program
    {
        // A known public activity.
        private static String ACTIVITY_ID = "z12gtjhq3qn2xxl2o224exwiqruvtda0i";

        public static void Main(string[] args)
        {
            Console.WriteLine("Plus API - Service Account");
            Console.WriteLine("==========================");

            String serviceAccountEmail = "SERVICE_ACCOUNT_EMAIL_HERE";

            var certificate = new X509Certificate2(@"key.p12", "notasecret", X509KeyStorageFlags.Exportable);

            ServiceAccountCredential credential = new ServiceAccountCredential(
               new ServiceAccountCredential.Initializer(serviceAccountEmail)
               {
                   Scopes = new[] { PlusService.Scope.PlusMe }
               }.FromCertificate(certificate));

            // Create the service.
            var service = new PlusService(new BaseClientService.Initializer()
            {
                HttpClientInitializer = credential,
                ApplicationName = "Plus API Sample",
            });

            Activity activity = service.Activities.Get(ACTIVITY_ID).Execute();
            Console.WriteLine("  Activity: " + activity.Object.Content);
            Console.WriteLine("  Video: " + activity.Object.Attachments[0].Url);

            Console.WriteLine("Press any key to continue...");
            Console.ReadKey();
        }
    }
}

获取凭据并创建DriveService实例后，只需调用Files: create端点，将其指定为所创建文件的父目录（请参见"Request body"规范）即可。共享驱动器或共享驱动器中的文件夹。

例如：

var fileMetadata = new File();
fileMetadata.Name = "My File";
fileMetadata.Parents = new List<string> { "YOUR_SHARED_DRIVE_FOLDER_ID" };


FilesResource.CreateMediaUpload request;
using (var stream = new System.IO.FileStream("your_folder/your_file",
                        System.IO.FileMode.Open))
{
    request = driveService.Files.Create(
        fileMetadata, stream);
    request.Fields = "id";
    request.Upload();
}
var file = request.ResponseBody;
Console.WriteLine("File ID: " + file.Id);

参考

您可以在此处了解有关服务帐户的更多信息：

C＃Google Drive与第三方的连接

1 个答案:

参考