GoogleWebAuthorizationBroker.AuthorizeAsync 出错

Posted 2023-03-31

【中文标题】GoogleWebAuthorizationBroker.AuthorizeAsync 出错

【英文标题】：Error at GoogleWebAuthorizationBroker.AuthorizeAsync

【发布时间】：2021-09-04 23:26:29

【问题描述】：

我正在尝试使用 C# 连接到我的 GoogleDrive。 我的代码是：

    using Google.Apis.Auth.OAuth2;
using Google.Apis.Calendar.v3;
using Google.Apis.Drive.v3;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;

public class GoogleDriveFiles

    public string Id  get; set; 
    public string Name  get; set; 
    public long? Size  get; set; 
    public long? Version  get; set; 
    public DateTime? CreatedTime  get; set; 


static string ApplicationName = "test";
static string[] Scopes =  CalendarService.Scope.Calendar ;
string credentialsJsonFIle = "c:\\webroot\\docs\\googleDriveCredentials.json";

[Obsolete]
protected void Page_Load(object sender, EventArgs e)

    UserCredential credential;
    using (var stream = new FileStream(credentialsJsonFIle, FileMode.Open, FileAccess.Read))
    
        // The file token.json stores the user's access and refresh tokens, and is created
        // automatically when the authorization flow completes for the first time.
        string credPath = @"\token.json";
        credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
            GoogleClientSecrets.Load(stream).Secrets,
            Scopes,
            "user",
            CancellationToken.None,
            new FileDataStore(credPath, true)).Result;
    
    // 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 = int.MaxValue;
    listRequest.Fields = "nextPageToken, files(id, name, parents, size, shared, fullFileExtension, fileExtension, version, createdTime)";

    IList<Google.Apis.Drive.v3.Data.File> files = listRequest.Execute().Files;
    
    Response.Write("Files:<br/>");
        
    FilesResource.ListRequest FileListRequest = service.Files.List();
    //get file list.
    List<GoogleDriveFiles> FileList = new List<GoogleDriveFiles>();
    string tempPath = Path.GetTempPath();

    if (files != null && files.Count > 0)
    
        foreach (var file in files)
        
            if (file.FileExtension == "pdf")
            
                GoogleDriveFiles File = new GoogleDriveFiles
                
                    Id = file.Id,
                    Name = file.Name,
                    Size = file.Size,
                    Version = file.Version,
                    CreatedTime = file.CreatedTime
                ;
                FileList.Add(File);
                FilesResource.GetRequest request = service.Files.Get(file.Id);
                MemoryStream stream1 = new MemoryStream();
                string pathFile = System.IO.Path.Combine(tempPath, file.Name);

                request.Download(stream1);

                SaveStream(stream1, pathFile);
                service = new DriveService(new BaseClientService.Initializer()
                
                    HttpClientInitializer = credential,
                    ApplicationName = ApplicationName,
                );
            
        
    
    else
    
        Response.Write("No files found.<br/>");
    

我收到以下错误消息： 无法访问网络位置。有关网络故障排除的信息，请参阅 Windows 帮助

在线：凭据 = GoogleWebAuthorizationBroker.AuthorizeAsync(

我的堆栈跟踪显示以下内容：

    [HttpListenerException (0x4d0): The network location cannot be reached. For information about network troubleshooting, see Windows Help]
   System.Net.HttpListener.AddAllPrefixes() +352
   System.Net.HttpListener.Start() +297
   Google.Apis.Auth.OAuth2.LocalServerCodeReceiver.StartListener() +114
   Google.Apis.Auth.OAuth2.<ReceiveCodeAsync>d__13.MoveNext() +76
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   Google.Apis.Auth.OAuth2.<AuthorizeAsync>d__8.MoveNext() +479
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   Google.Apis.Auth.OAuth2.<AuthorizeAsync>d__4.MoveNext() +422
   System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +99
   System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +58
   Google.Apis.Auth.OAuth2.<AuthorizeAsync>d__1.MoveNext() +286

[AggregateException: One or more errors occurred.]
   System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) +4323141
   System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification) [phone]
   System.Threading.Tasks.Task`1.get_Result() +33
   TestGoogleDrive.Page_Load(Object sender, EventArgs e) in c:\Webroot\www.godigix.com\test\testGoogleDrive.aspx.cs:48
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678

有人可以帮助我吗？ 我的 json 文件路径是正确的，并且文件存在于给定的路径中。

【问题讨论】：

不是 Page_load 用于 asp.net 核心吗？一个网络应用程序。您的代码是为已安装的应用程序设计的。

您要使用自己的帐户吗？或者您是否正在尝试获取用户帐户的权限？

【参考方案1】：

protected void Page_Load(object sender, EventArgs e)

向我暗示您正在尝试创建一个 Web 应用程序GoogleWebAuthorizationBroker.AuthorizeAsync 旨在仅用于已安装的应用程序。它会在运行在网络服务器上的机器上打开同意屏幕。

对于 asp .net 核心，您需要使用依赖注入，然后您可以加载

/// <summary>
/// Lists the authenticated user's Google Drive files.
/// Specifying the <see cref="GoogleScopedAuthorizeAttribute"> will guarantee that the code
/// executes only if the user is authenticated and has granted the scope specified in the attribute
/// to this application.
/// </summary>
/// <param name="auth">The Google authorization provider.
/// This can also be injected on the controller constructor.</param>
[GoogleScopedAuthorize(DriveService.ScopeConstants.DriveReadonly)]
public async Task<IActionResult> DriveFileList([FromServices] IGoogleAuthProvider auth)

    GoogleCredential cred = await auth.GetCredentialAsync();
    var service = new DriveService(new BaseClientService.Initializer
    
        HttpClientInitializer = cred
    );
    var files = await service.Files.List().ExecuteAsync();
    var fileNames = files.Files.Select(x => x.Name).ToList();
    return View(fileNames);

我有一个关于如何将 ASP .net 核心与 Google Profile API 一起使用的视频，它将向您展示如何配置依赖注入 How to get a Google users profile information, with C#.

【讨论】：

您好，谢谢，但是有什么选项不需要人工交互？

如果您控制您尝试访问的驱动器帐户，那么您应该使用服务帐户。 youtu.be/UTTTtwb7x7g 如果它的用户数据，那么您需要他们的同意才能访问他们的驱动器帐户，因此您需要使用 Oauth2。