如果在尝试嵌入Vimeo内容时遇到此错误，请更改iframe的src，从:https://vimeo.com/63534746更改为:http://player.vimeo.com/video/63534746

我不确定这有什么关系，但我想出了一个变通办法。在我的网站上，我想在一个包含加载URL的iframe的模态窗口中显示链接。

我所做的是，我将链接的点击事件链接到这个javascript函数。所有这些操作都是向一个PHP文件发出请求，该文件在决定是在模式窗口中加载URL还是重定向之前，检查URL头中的X-FRAME-Options。

函数如下:

  function opentheater(link, title){
        $.get( "url_origin_helper.php?url="+encodeURIComponent(link), function( data ) {
  if(data == "ya"){
      $(".modal-title").html("<h3 style='color:480060;'>"+title+"&nbsp;&nbsp;&nbsp;<small>"+link+"</small></h3>");
        $("#linkcontent").attr("src", link);
        $("#myModal").modal("show");
  }
  else{
      window.location.href = link;
      //alert(data);
  }
});


        }

下面是检查它的PHP文件代码:

<?php
$url = rawurldecode($_REQUEST['url']);
$header = get_headers($url, 1);
if(array_key_exists("X-Frame-Options", $header)){
    echo "nein";
}
else{
    echo "ya";
}


?>

希望这能有所帮助。

唯一一个有一堆答案的问题。欢迎来到这个指南，我希望我在最后期限那天晚上10:30为它工作时能有这个指南……facebook在canvas应用上做了一些奇怪的事情，好吧，你已经被警告过了。如果你还在这里，你有一个Rails应用程序将出现在Facebook Canvas后面，那么你将需要:

Gemfile:

gem "rack-facebook-signed-request", :git => 'git://github.com/cmer/rack-facebook-signed-request.git'

配置/ facebook.yml

facebook:
  key: "123123123123"
  secret: "123123123123123123secret12312"

配置/ application.rb

config.middleware.use Rack::Facebook::SignedRequest, app_id: "123123123123", secret: "123123123123123123secret12312", inject_facebook: false

配置/初始化/ omniauth.rb

OmniAuth.config.logger = Rails.logger
SERVICES = YAML.load(File.open("#{::Rails.root}/config/oauth.yml").read)
Rails.application.config.middleware.use OmniAuth::Builder do
  provider :facebook, SERVICES['facebook']['key'], SERVICES['facebook']['secret'], iframe:   true
end

application_controller.rb

before_filter :add_xframe
def add_xframe
  headers['X-Frame-Options'] = 'GOFORIT'
end

你需要一个控制器来调用Facebook的画布设置，我使用/canvas/，并使路由到这个应用程序的主SiteController:

class SiteController < ApplicationController
  def index
    @user = User.new
  end
  def canvas
    redirect_to '/auth/failure' if request.params['error'] == 'access_denied'
    url = params['code'] ? "/auth/facebook?signed_request=#{params['signed_request']}&state=canvas" : "/login"
    redirect_to url
  end
  def login
  end
end

login.html.erb

<% content_for :javascript do %>
  var oauth_url = 'https://www.facebook.com/dialog/oauth/';
  oauth_url += '?client_id=471466299609256';
  oauth_url += '&redirect_uri=' + encodeURIComponent('https://apps.facebook.com/wellbeingtracker/');
  oauth_url += '&scope=email,status_update,publish_stream';
console.log(oauth_url);
  top.location.href = oauth_url;
<% end %>

来源

配置我认为来自omniauth的例子。 宝石文件(这是关键!!)来自:slideshare things i learned… 这个堆栈问题有整个Xframe的角度，所以你会得到一个空白，如果 你不需要把这个头文件放到应用控制器中。 我的男人@rafmagana写了这个heroku指南，现在你可以用这个答案来做轨道，也可以用巨人的肩膀走路。

虽然没有提及，但在某些情况下可以有所帮助:

var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
    if (xhr.readyState !== 4) return;
    if (xhr.status === 200) {
        var doc = iframe.contentWindow.document;
        doc.open();
        doc.write(xhr.responseText);
        doc.close();
    }
}
xhr.open('GET', url, true);
xhr.send(null);

I came across this issue when running a wordpress web site. I tried all sorts of things to fix it and wasn't sure how, ultimately the issue was because I was using DNS forwarding with masking, and the links to external sites were not being addressed properly. i.e. my site was hosted at http://123.456.789/index.html but was masked to run at http://somewebSite.com/index.html. When i entered http://123.456.789/index.html in the browser clicking on those same links resulted in no X-frame-origins issues in the JS console, but running http://somewebSite.com/index.html did. In order to properly mask you must add your host's DNS name servers to your domain service, i.e. godaddy.com should have name servers of example, ns1.digitalocean.com, ns2.digitalocean.com, ns3.digitalocean.com, if you were using digitalocean.com as your hosting service.

<form target="_parent" ... />

根据Kevin Vella的想法，我尝试在PayPal的按钮生成器生成的表单元素上使用上述方法。为我工作，这样贝宝不会在一个新的浏览器窗口/标签打开。

更新

这里有一个例子:

在今天(01-19-2021)生成按钮时，PayPal自动在表单元素上包含target="_top"，但如果这对您的上下文不起作用，请尝试不同的目标值。我建议_parent——至少当我使用这个PayPal按钮时，它是有效的。

有关更多信息，请参阅表单目标值。

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_parent">
  <input type="hidden" name="cmd" value="_xclick">
  <input type="hidden" name="business" value="name@email.com">
  <input type="hidden" name="lc" value="US">
  <input type="hidden" name="button_subtype" value="services">
  <input type="hidden" name="no_note" value="0">
  <input type="hidden" name="currency_code" value="USD">
  <input type="hidden" name="bn" value="PP-BuyNowBF:btn_buynowCC_LG.gif:NonHostedGuest">
  <input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
  <img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>