3

我正在开发一个提供与 MailChimp 集成的新应用程序。基本上,它使用户能够轻松地将他们的客户联系信息直接导出到 MailChimp 帐户(即,导出到 MailChimp 内的特定邮件列表)。所有这些都有效,并且与我的问题有些无关。

为了不要求用户每次都输入 MailChimp-credentials,我即将实现 oauth2 授权工作流程,如下所述:http: //apidocs.mailchimp.com/oauth2/

它在第 1-3 步中工作得很好,但第 4 步正在杀死我。这是我第一次使用 oauth,但我似乎了解基础知识。

这是我的问题:

当我对https://login.mailchimp.com/oauth2/token -URI 进行 POST 调用以获取最终访问令牌时,我不断收到 JSON 结果中的错误:“invalid_grant”

我检查了请求和响应流,我的 url 编译正确。

这是我在控制器中的代码:

(GrantEcoAccess 只是授予对另一个应用程序的访问权限 - 其余的应该是不言自明的)

public class HomeController : ApplicationController
{

    private readonly string authorize_uri = "https://login.mailchimp.com/oauth2/authorize";
    private readonly string access_token_uri = "https://login.mailchimp.com/oauth2/token";
    private readonly string mailchimp_clientid2 = "xxx";
    private readonly string mailchimp_secret2 = "yyy";

    ...

    public ActionResult GrantEcoAccess()
    {

        //if exist: use saved token
        var user = (Mailchimp_users)Session["user"];
        if (!string.IsNullOrWhiteSpace(user.EcoToken))
            return RedirectToAction("GrantMailChimpAccess");

        // if !
        var url = "https://secure.e-conomic.com/secure/api1/requestaccess.aspx?role=superuser&appId=MailChimp&redirectUrl=http://localhost:18017/Home/IncomingToken";
        Redirect(url).ExecuteResult(ControllerContext);
        return null;
    }


    public ActionResult IncomingToken(string token)
    {
        var user = (Mailchimp_users)Session["user"];
        user.EcoToken = token;
        EcoSession.DataSession.Refresh(System.Data.Objects.RefreshMode.ClientWins, user);
        EcoSession.DataSession.SaveChanges();

        return RedirectToAction("GrantMailChimpAccess");
    }

    public ActionResult GrantMailChimpAccess()
    {

        //if exist: use saved token
        var user = (Mailchimp_users)Session["user"];
        if (!string.IsNullOrWhiteSpace(user.MailChimpToken))
            return RedirectToAction("Index", "Subscribe");



        //if !
        var url = string.Format("{0}?response_type=code&client_id={1}&redirect_uri=", authorize_uri, mailchimp_clientid2, "http://127.0.0.1:18017/Home/IncomingMailChimpToken");
        Redirect(url).ExecuteResult(ControllerContext);
        return null;
    }

    public ActionResult IncomingMailChimpToken(string code)
    {


        var url = "https://login.mailchimp.com/oauth2/token?grant_type=authorization_code&client_id=XX&client_secret=XX&code=" + code + "&redirect_uri=http://127.0.0.1:18017/Home/AuthComplete";
        //var url = string.Format("?grant_type=authorization_code&client_id={0}&client_secret={1}&code={2}&redirect_uri={3}", mailchimp_clientid, mailchimp_secret, code, Url.Action("AuthComplete"));


        Response.Clear();

        StringBuilder sb = new StringBuilder();
        sb.Append("<html>");
        sb.AppendFormat(@"<body onload='document.forms[""form""].submit()'>");
        sb.AppendFormat("<form name='form' action='{0}' method='post'>", access_token_uri);

        sb.Append("<input type='hidden' name='grant_type' value='authorization_code'>");
        sb.AppendFormat("<input type='hidden' name='client_id' value='{0}'>", mailchimp_clientid2);
        sb.AppendFormat("<input type='hidden' name='client_secret' value='{0}'>", mailchimp_secret2);
        sb.AppendFormat("<input type='hidden' name='code' value='{0}'>", code);
        sb.AppendFormat("<input type='hidden' name='redirect_uri' value='{0}'>", "http://127.0.0.1:18017/Home/AuthComplete");
        // Other params go here

        sb.Append("</form>");
        sb.Append("</body>");
        sb.Append("</html>");

        Response.Write(sb.ToString());
        Response.End();

        return null;

    }

    public ActionResult AuthComplete(string access_token, string expires_in, string scope)
    {
        if (string.IsNullOrWhiteSpace(access_token))
            throw new Exception("Could not authorize user with MailChimp");

        var user = (Mailchimp_users)Session["user"];
        user.MailChimpToken = access_token;
        EcoSession.DataSession.Refresh(System.Data.Objects.RefreshMode.ClientWins, user);
        EcoSession.DataSession.SaveChanges();


        return RedirectToAction("Index", "Subscribe");
    }

}

杀死我的是第 4 步,而不是第 5 步。

4

3 回答 3

3

您应该使用 post 在正文中发送您的请求参数,如果您使用 curl php,您可以这样做:

$value = http_build_query($params); //params is an array
curl_setopt($ch, CURLOPT_POSTFIELDS, $value);

值应如下所示:

grant_type=authorization_code&client_id=635959587059&client_secret=0da3e7744949e1406b7b250051ee1a95&code=1edf2589e664fd317f6a7ff5f97b42f7&redirect_uri=http%3A%2F%2F192.168.1.8%2Foauth%2Fcomplete.php

请注意,您应该以查询字符串的形式创建一个正文请求,不要发送 json,他们不会找到您的参数。如果您在执行此操作后收到无效的授权响应或其他内容,请检查您用于获取第一个代码的重定向 uri 是否与您发送以获取令牌的重定向 uri 完全相同。

此外,对于那些使用 PHP 的人,为了匹配mailchimp 文档状态使用这个:

curl_setopt($ch, CURLOPT_USERAGENT, 'oauth2-draft-v10');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
于 2013-10-10T13:17:43.737 回答
2

如果您不想自己实现它,那么有一个不错的包装器,它可以处理对 MailChimp 的 oAuth2 和 RESTapi 调用。

https://github.com/jamierytlewski/eepOAuth2-MVC

于 2012-10-05T01:09:48.990 回答
1

第 4 步是“您的应用程序必须使用代码向 access_token_uri 发出带外请求”

这里的要点是“带外”。您必须构建并发送一个 post 请求server-side。客户不应该有你的 mailchimp_secret

您的 IncomingMailChimpToken 可能如下所示:

    public ActionResult IncomingMailChimpToken(string code)
    {
        string mcPostData = String.Format(
            "grant_type={0}&client_id={1}&client_secret={2}&code={3}&redirect_url={4}",
            System.Web.HttpUtility.UrlEncode("authorization_code"),
            System.Web.HttpUtility.UrlEncode(mailchimp_clientid2),
            System.Web.HttpUtility.UrlEncode(mailchimp_secret2),
            System.Web.HttpUtility.UrlEncode(code),
            System.Web.HttpUtility.UrlEncode("http://127.0.0.1:18017/Home/AuthComplete")
            );
        WebRequest request = WebRequest.Create(access_token_uri);
        // Set the Method property of the request to POST.
        request.Method = "POST";
        request.ContentType = "application/json";
        byte[] byteArray = Encoding.UTF8.GetBytes(mcPostData);
        request.ContentLength = byteArray.Length;
        // Get the request stream.
        Stream dataStream = request.GetRequestStream();
        // Write the data to the request stream.
        dataStream.Write(byteArray, 0, byteArray.Length);
        // Close the Stream object.
        dataStream.Close();
        // Get the response.
        WebResponse response = request.GetResponse();
        // Get the stream containing content returned by the server.
        dataStream = response.GetResponseStream();
        // Open the stream using a StreamReader for easy access.
        StreamReader reader = new StreamReader(dataStream);
        // Read the content.
        string responseFromServer = reader.ReadToEnd();
        // Cleanup the streams and the response.
        reader.Close ();
        dataStream.Close ();
        response.Close ();

        // parse the json responseFromServer to extract token, expires_in and scope
        // and call AuthComplete with these params
    }
于 2012-10-04T12:18:39.537 回答