401从ASP.NET在Google域中使用Google驱动器API时出错

我目前正在尝试向我们公司的ASP.NET网站添加功能，允许最终用户将网站生成的文件上传到同一公司内他们自己的Google驱动器中

该公司拥有自己的谷歌域名，其中包括邮件、硬盘、联系人、日历和几乎所有其他内容。它使用SAML通过我们的Active Directory设置进行身份验证，该设置链接到Google

需要注意的是，此代码适用于我的@gmail.com帐户。使用公司的Google应用程序域帐户，我得到底部显示的无效凭据错误。我已经和我们的谷歌管理员谈过了，他声称我的帐户在驱动API访问方面没有任何限制。请记住，API ID/Secret是使用我的公司帐户而不是Gmail帐户创建的

using System;
using System.IO;
using System.Text;
using System.Web;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth2;
using Google.Apis.Authentication.OAuth2;
using Google.Apis.Drive.v2;
using Google.Apis.Util;

namespace GoogleTesting
{
    public partial class GoogleAuth : System.Web.UI.Page
    {
        private static readonly string CLIENTID = "xxxxxxxxx.apps.googleusercontent.com";
        private static readonly string CLIENTSECRET = "xxxxxxxxxxxxxxxxxxxxxx";
        private static readonly string APIKEY = "xxxxxxxxxxx";
        private static readonly string REDIRECTURI =  http://localhost:61111/default.aspx";
        private static readonly string[] SCOPES = new[] { DriveService.Scopes.Drive.GetStringValue() };

        private static DriveService driveService;
        private static OAuth2Authenticator<WebServerClient> authenticator;
        private static IAuthorizationState _state;

        private IAuthorizationState AuthState
        {
            get
            {
                return _state ?? HttpContext.Current.Session["GoogleAuthState"] as IAuthorizationState;
            }
        }

        private OAuth2Authenticator<WebServerClient> CreateAuthenticator()
        {
            var provider = new WebServerClient(GoogleAuthenticationServer.Description, CLIENTID, CLIENTSECRET);
            var authenticator = new OAuth2Authenticator<WebServerClient>(provider, GetAuthorization);
            return authenticator;
        }

        private IAuthorizationState GetAuthorization(WebServerClient client)
        {
            IAuthorizationState state = AuthState;
            if (state != null)
            {
                if (state.AccessTokenExpirationUtc.Value.CompareTo(DateTime.Now.ToUniversalTime()) > 0)
                    return state;
                else
                    state = null;
            }
            state = client.ProcessUserAuthorization(new HttpRequestInfo(HttpContext.Current.Request));
            if (state != null && (!string.IsNullOrEmpty(state.AccessToken) || !string.IsNullOrEmpty(state.RefreshToken)))
            {
                if (state.RefreshToken == null)
                    state.RefreshToken = "";
                HttpContext.Current.Session["GoogleAuthState"] = _state = state;
                return state;
            }
            client.RequestUserAuthorization(SCOPES, "", HttpContext.Current.Request.Url);
            return null;
        }


        protected void Page_Load(object sender, EventArgs e)
        {
            if(authenticator == null)
                authenticator = CreateAuthenticator();

            if (driveService == null)
            {
                driveService = new DriveService(authenticator);
                driveService.Key = APIKEY;
            }
            //We should now be authenticated and ready to use Drive API.
            UploadFile();
        }

        private void UploadFile()
        {
            Google.Apis.Drive.v2.Data.File newFile = new Google.Apis.Drive.v2.Data.File { Title = "Test File", MimeType = "text/plain" };
            byte[] byteArray = Encoding.ASCII.GetBytes("Body of the document.");
            MemoryStream stream = new MemoryStream(byteArray);
            FilesResource.InsertMediaUpload request = driveService.Files.Insert(newFile, stream, newFile.MimeType);
            request.Convert = true;
            request.Upload(); 
        }
    }
}

问题发生在请求上。上载行出现以下异常

异常详细信息：系统。异常：无效凭据

源错误：第85行：请求。上载

源文件：C:\TMGGoogle\TMGGoogle\TMGGoogle\GoogleAuth.aspx.cs 电话号码：85

堆栈跟踪：

[例外：无效凭据] Google.api.Upload.ResumableUpload`1.Upload+722 GoogleTesting.GoogleAuth.UploadFile

---

非常感谢您的帮助。谢谢。

嗯，我找到了问题的根本原因。事实证明，我们公司的谷歌应用程序帐户关闭了Docs API访问

我们的谷歌应用程序管理员已经打开了它，这已经解决了这个问题