“已经添加了具有相同密钥的项目。”同时添加“/&output=embed”答案

【问题标题】："An item with the same key has already been added." while adding "/&output=embed"“已经添加了具有相同密钥的项目。”同时添加“/&output=embed”
【发布时间】：2016-03-14 19:25:15
【问题描述】：

使用 Evernote API 在 C# 中实现 MVC 应用程序。我正在使用AsyncOAuth.Evernote.Simple nuget 包。 Receiving and error of Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'，当尝试导航到触发 OAuth 进程的 URL 时。

我的代码周围有一个 iframe（无法更改）。执行代码后会产生错误："An item with the same key has already been added". 第一次命中requestToken 时会出现此错误。

下面是我的EvernoteProviderController.cs

public class EvernoteProviderController : Controller
{



    // Initialize Oauth call, pulling values from web.config
   EvernoteAuthorizer EvernoteAuthorizer = new EvernoteAuthorizer(ConfigurationManager.AppSettings["Evernote.Url"] + "&output=embed", ConfigurationManager.AppSettings["Evernote.Key"], ConfigurationManager.AppSettings["Evernote.Secret"]);



    // This method makes the original call to Evernote to get a token so that the user can validate that they want to access this site.
    public ActionResult Authorize(bool reauth = false)
    {
        // Allow for reauth
        if (reauth)
            SessionHelper.Clear();

        // First of all, check to see if the user is already registered, in which case tell them that
        if (SessionHelper.EvernoteCredentials != null)
            return Redirect(Url.Action("AlreadyAuthorized"));

        // Evernote will redirect the user to this URL once they have authorized your application
        var callBackUrl = Request.Url.GetLeftPart(UriPartial.Authority) + Url.Action("ObtainTokenCredentials");

        // Generate a request token - this needs to be persisted till the callback
        var requestToken = EvernoteAuthorizer.GetRequestToken(callBackUrl);

        // Persist the token
        SessionHelper.RequestToken = requestToken;

        // Redirect the user to Evernote so they can authorize the app
        var callForwardUrl = EvernoteAuthorizer.BuildAuthorizeUrl(requestToken);
        return Redirect(callForwardUrl);
    }

    // This action is the callback that Evernote will redirect to after the call to Authorize above
    public ActionResult ObtainTokenCredentials(string oauth_verifier)
    {
        // Use the verifier to get all the user details we need and store them in EvernoteCredentials
        var credentials = EvernoteAuthorizer.ParseAccessToken(oauth_verifier, SessionHelper.RequestToken);
        if (credentials != null)
        {
            SessionHelper.EvernoteCredentials = credentials;
            return Redirect(Url.Action("Authorized"));
        }
        else
        {
            return Redirect(Url.Action("Unauthorized"));
        }
    }

    // Show the user if they are authorized
    public ActionResult Authorized()
    {
        return View(SessionHelper.EvernoteCredentials);
    }

    public ActionResult Unauthorized()
    {
        return View();
    }


    //Redirects user if already authorized, then dump out the EvernoteCredentials object
    public ActionResult AlreadyAuthorized()
    {
        return View(SessionHelper.EvernoteCredentials);
    }

    public ActionResult Settings()
    {
        return View();
    }

}

以前有没有人遇到过 iframe 的问题，或者知道我应该往哪个方向发展？我正在尝试嵌入我的 URL 端点，以便绕过 iframe 错误。

【问题讨论】：

标签： c# asp.net-mvc iframe oauth evernote

【解决方案1】：

解决了错误。

一点背景故事：

此应用程序的目的是提供 OAuth 页面，用户可以在其中注册，该页面将生成 AuthToken 和 NotebookURL，（两者都需要 Evernote API 来读取/写入 Notes - 这是Evernote 的对象）。

之前的行为（在我更改之前）是当用户点击链接时 - 他们将被重定向（在同一窗口中）到 Evernote OAuth 页面。

这给我带来了问题，因为我的代码有另一个包装器 (iframe)。所以在非技术方面，我在iframe 中有一个iframe 和一个iframe。

解决方法

创建了一个 JavaScript 代码，该代码将添加一个 click 事件侦听器，然后使用 window.open 创建一个弹出窗口。

$("#btnStart").click(function () {

    myWindow = window.open(baseUrl + "/EvernoteProvider/Authorize", '_blank', 'width=500,height=500, scrollbars=no,resizable=no');
    myWindow.focus();

});

【讨论】：