Question

我正在尝试在我的Asp.net应用程序（C＃）中使用OAuth 2。问题是我需要使用共享的Google帐户。为此，我的计划是使用令牌，到期日期和刷新令牌为身份验证设定种子，然后在需要身份验证时检查到期日期并使用刷新令牌。

我用于身份验证的示例如下所示：

    UserCredential credential;
    using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
    {
        credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
            GoogleClientSecrets.Load(stream).Secrets,
            // This OAuth 2.0 access scope allows an application to upload files to the
            // authenticated user's YouTube channel, but doesn't allow other types of access.
            new[] { YouTubeService.Scope.YoutubeUpload },
            "user",
            CancellationToken.None
        );
    }

似乎没有包含刷新令牌的对象。

如何获取刷新令牌和到期日期？

Answer 1

解决方案是进行后期操作并手动解析结果，而不是使用任何Google类。

        string gurl = "code=" + code + "&client_id=" + client_id +
                "&client_secret=" + client_secret + "&redirect_uri=" + redirect_uri + "&grant_type=" + grant_type;

        string url = "https://www.googleapis.com/oauth2/v3/token";

        // creates the post data for the POST request
        string postData = (gurl);

        // create the POST request
        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(url);
        webRequest.Host ="www.googleapis.com";

        webRequest.Method = "POST";
        webRequest.ContentType = "application/x-www-form-urlencoded";
        webRequest.ContentLength = postData.Length;

        // POST the data
        using (StreamWriter requestWriter2 = new StreamWriter(webRequest.GetRequestStream()))
        {
            requestWriter2.Write(postData);
        }

        //This actually does the request and gets the response back
        HttpWebResponse resp = (HttpWebResponse)webRequest.GetResponse();

        string googleAuth;

        using (StreamReader responseReader = new StreamReader(webRequest.GetResponse().GetResponseStream()))
        {
            //dumps the HTML from the response into a string variable
            googleAuth = responseReader.ReadToEnd();
        }

从那里我主要需要解析googleAuth字符串以获取令牌，刷新令牌和有效期。我一直希望在Google课程中有一个解决方案，这个解决方案必须是一个非常常见的请求，但显然我将创建自己的课程。

如何为我的asp.net Web应用程序获取Google Api OAuth 2刷新令牌？

1 个答案: