如何在没有身份验证提示的情况下在控制台中获取 oauth 访问令牌

Question

我想像 oauth 一样进行身份验证 Login using Google OAuth 2.0 with C# 但我不想验证提示弹出 我想直接获取令牌而不弹出..

public  ActionResult CodeLele()
    {
        if (Session.Contents.Count > 0)
        {
            if (Session["loginWith"] != null)
            {
                if (Session["loginWith"].ToString() == "google")
                {
                    try
                    {
                        var url = Request.Url.Query;
                        if (url != "")
                        {
                            string queryString = url.ToString();
                            char[] delimiterChars = { '=' };
                            string[] words = queryString.Split(delimiterChars);
                            string code = words[1];

                            if (code != null)
                            {
                                //get the access token 
                                HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://accounts.google.com/o/oauth2/token");
                                webRequest.Method = "POST";
                                Parameters = "code=" + code + "&client_id=" + googleplus_client_id + "&client_secret=" + googleplus_client_sceret + "&redirect_uri=" + googleplus_redirect_url + "&grant_type=authorization_code";
                                byte[] byteArray = Encoding.UTF8.GetBytes(Parameters);
                                webRequest.ContentType = "application/x-www-form-urlencoded";
                                webRequest.ContentLength = byteArray.Length;
                                Stream postStream = webRequest.GetRequestStream();
                                // Add the post data to the web request
                                postStream.Write(byteArray, 0, byteArray.Length);
                                postStream.Close();

                                WebResponse response = webRequest.GetResponse();
                                postStream = response.GetResponseStream();
                                StreamReader reader = new StreamReader(postStream);
                                string responseFromServer = reader.ReadToEnd();

                                GooglePlusAccessToken serStatus = JsonConvert.DeserializeObject<GooglePlusAccessToken>(responseFromServer);

                                if (serStatus != null)
                                {
                                    string accessToken = string.Empty;
                                    accessToken = serStatus.access_token;

                                    if (!string.IsNullOrEmpty(accessToken))
                                    {
                                        // This is where you want to add the code if login is successful.
                                        // getgoogleplususerdataSer(accessToken);
                                    }
                                    else
                                    { }
                                }
                                else
                                { }
                            }
                            else
                            { }
                        }
                    }
                    catch (WebException ex)
                    {
                        try
                        {
                            var resp = new StreamReader(ex.Response.GetResponseStream()).ReadToEnd();

                            dynamic obj = JsonConvert.DeserializeObject(resp);
                            //var messageFromServer = obj.error.message;
                            //return messageFromServer;
                            return obj.error_description;
                        }
                        catch (Exception exc)
                        {
                            throw exc;
                        }
                    }
                }
            }
        }
        return Content("done");
    }
    public ActionResult JeClick()


    {
        var Googleurl = "https://accounts.google.com/o/oauth2/auth?response_type=code&redirect_uri=" + googleplus_redirect_url + "&scope=https://www.googleapis.com/auth/userinfo.email%20https://www.googleapis.com/auth/userinfo.profile&client_id=" + googleplus_client_id;
        Session["loginWith"] = "google";
        return Redirect(Googleurl);
    }

Answer 1

凭据窗口（弹出窗口）是您询问用户是否可以访问他们的数据的方式。如果不先询问用户是否可以访问他们的数据，就无法访​​问用户数据。这就是 Oauth2 的工作原理。

如果您要访问自己的数据，则可以使用称为服务帐户的东西。 Service accounts 是预授权的。您可以使用服务帐户并授予它访问您的谷歌日历的权限，您可以授予它访问 Google 驱动器中的文件夹的权限。然后，您可以使用服务帐户进行身份验证。服务帐户就像虚拟用户。

我的关于服务帐号的文章：Google Developer service account