在Google中使用刷新令牌

Question

我正在重写一个使用Google Contacts API（RIP）使用人员API的应用程序。我已经有一个刷新令牌。以前，我创建了一个oauth2parameters对象的实例，并用它来创建requestsetsettings类的实例，该类别将传递给contacts> Contactsrequest constructor

            OAuth2Parameters oparams = new OAuth2Parameters
            {
                AccessToken = tokenData.access_token,
                RefreshToken = tokenData.refresh_token,
                ClientId = ClientId,
                ClientSecret = ClientSecret,
                AccessType = "offline",
                ApprovalPrompt = "force",
                Scope = _contactScope
            };

            if (string.IsNullOrWhiteSpace(oparams.AccessToken))
            {
                oparams.AccessToken = "xyz";  //it doesn't matter what this token is, it just can't be blank, it will get refreshed
                OAuthUtil.RefreshAccessToken(oparams);
                dataStore._storedResponse.access_token = oparams.AccessToken;
            }
        
            var settings = new RequestSettings("My App")
            {
                OAuth2Parameters = oparams
            };

            if (paging)
            {
                settings.PageSize = 50;
                settings.AutoPaging = true;
            }
            return new ContactsRequest(settings);

我无法弄清楚如何在新的人API中做同样的事情。显然，我需要使用peopleserviceservice对象，但是其构造函数采用initializer对象的实例，我不知道如何使用刷新令牌和（可能）访问令牌。

Answer 1

这是有关所有Google API的.NET库进行身份验证的官方教程：

https://develvevelers.google.com/api-client-library/dotnet/guide/aaa_oauth

这是一个有用的片段未来的身份验证尝试：

            UserCredential credential;
            using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
            {
                credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    new[] { BooksService.Scope.Books },
                    "user", CancellationToken.None, new FileDataStore("Books.ListMyLibrary"));
            }

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

            var bookshelves = await service.Mylibrary.Bookshelves.List().ExecuteAsync();