C# Google OAuth访问令牌为空

我想这个问题可能被问了一百万次，但我没有找到任何答案

我试图通过我的Unity项目访问Google日历，所以我使用C#，但不能使用官方的Google客户端库，因为它不受支持

不幸的是，每次我试图从服务器获取访问令牌时，我要么得到404，要么只是一个空响应

我的代码： 我用以下方法调用了该方法：

 Debug.Log(OAuth2.GetOAuthTokens(code, "authorization_code"));

那

Debug.Log

只是为了调试

我看到很多人说我需要将我的Uri列入白名单，但我在凭证中找不到该菜单点

---

我现在搜索了大约6个小时。请帮忙

如前所述，我使用他们的.NET SDK制作了一个Google日历的DLL文件。 我对它进行了一些修改，以便与Unity一起使用，然后在Unity项目中使用了该dll文件。这对我有用

下面是DLL代码：

  static string[] Scopes = { CalendarService.Scope.CalendarReadonly };
    static string ApplicationName = "Google Calendar API .NET Quickstart";

    public void Main()
    {
        UserCredential credential;
     
        using (var stream =
            new FileStream(UnityEngine.Application.streamingAssetsPath + "/credentials.json", 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;
            Console.WriteLine("Credential file saved to: " + credPath);
        }

        // Create Google Calendar API service.
        var service = new CalendarService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = ApplicationName,
        });

        // Define parameters of request.
        EventsResource.ListRequest request = service.Events.List("primary");
        request.TimeMin = DateTime.Now;
        request.ShowDeleted = false;
        request.SingleEvents = true;
        request.MaxResults = 10;
        request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;

        // List events.
        Events events = request.Execute();
        Debug.Log("Upcoming events:");
        if (events.Items != null && events.Items.Count > 0)
        {
            foreach (var eventItem in events.Items)
            {
                string when = eventItem.Start.DateTime.ToString();
                if (String.IsNullOrEmpty(when))
                {
                    when = eventItem.Start.Date;
                }
                Debug.Log("Event Summery: " + eventItem.Summary + " | " + " On " + when);
            }
        }
        else
        {
            Debug.Log("No upcoming events found.");
        }
        Console.Read();

    }

public Calendar calendar = new Calendar();

private void Start()
{
    calendar.Main();
}

统一端代码：

  static string[] Scopes = { CalendarService.Scope.CalendarReadonly };
    static string ApplicationName = "Google Calendar API .NET Quickstart";

    public void Main()
    {
        UserCredential credential;
     
        using (var stream =
            new FileStream(UnityEngine.Application.streamingAssetsPath + "/credentials.json", 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;
            Console.WriteLine("Credential file saved to: " + credPath);
        }

        // Create Google Calendar API service.
        var service = new CalendarService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = ApplicationName,
        });

        // Define parameters of request.
        EventsResource.ListRequest request = service.Events.List("primary");
        request.TimeMin = DateTime.Now;
        request.ShowDeleted = false;
        request.SingleEvents = true;
        request.MaxResults = 10;
        request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;

        // List events.
        Events events = request.Execute();
        Debug.Log("Upcoming events:");
        if (events.Items != null && events.Items.Count > 0)
        {
            foreach (var eventItem in events.Items)
            {
                string when = eventItem.Start.DateTime.ToString();
                if (String.IsNullOrEmpty(when))
                {
                    when = eventItem.Start.Date;
                }
                Debug.Log("Event Summery: " + eventItem.Summary + " | " + " On " + when);
            }
        }
        else
        {
            Debug.Log("No upcoming events found.");
        }
        Console.Read();

    }

public Calendar calendar = new Calendar();

private void Start()
{
    calendar.Main();
}

它给我日历事件摘要和日期。您可以从下载项目。

我发现了：

request.AddParameter（“auth_code”，auth_code，ParameterType.RequestBody）

必须是：
request.AddParameter（“code”，auth_code，ParameterType.GetOrPost）

我想我必须重命名参数键以匹配文档
试试这个。这也是我几年前做的一个非常简单的例子。如果你有任何问题，请告诉我。我从未与unity3d合作过，但我很乐意帮助您解决这个问题。@DalmTo为什么您要使用官方文档中所述的不同端点？他们忘记更新文档了吗？或者你的文章是基于旧版本的吗？@DalmTo阅读了你的文章并尝试了一下，但我的回复仍然是空的+我收到的回复代码是0，这很奇怪，自从我写了那篇文章以来，端点已经发生了变化。使用discovery Doc中的一个感谢您的帮助，一旦我放弃，就回到您的Api。但我想让我的工作用于教育目的。