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

我想验证一下使用c#使用Google OAuth 2.0登录但是我不希望身份验证提示框弹出我想直接获得token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)是您询问用户是否可以访问其数据的方式。如果不首先询问用户是否可以访问他们的数据，就没有办法访问用户数据。这就是Oauth2的工作原理。

如果您正在访问自己的数据，那么您可以使用称为服务帐户的东西。服务帐户是预先授权的。你可以使用这个服务帐户，让它访问你的谷歌日历，你可以让它访问谷歌驱动器上的一个文件夹。然后可以使用服务帐户进行身份验证。服务帐户就像虚拟用户。

我关于服务帐户的文章:Google Developer服务帐户