令人惊讶的是，这里没有人提到Apache服务器的设置(*.conf文件)或.htaccess文件本身是导致这个错误的原因。搜索你的。htaccess或Apache配置文件，确保你没有以下设置为DENY:

报头总是设置X-Frame-Options DENY

将其更改为SAMEORIGIN，使事情按预期工作:

报头总是设置X-Frame-Options SAMEORIGIN

我使用的是Tomcat 8.0.30，没有一个建议对我有效。当我们希望更新X-Frame-Options并将其设置为允许时，以下是我如何配置允许嵌入iframes:

进入Tomcat conf目录，编辑web.xml文件 添加下面的过滤器:

<filter>
            <filter-name>httpHeaderSecurity</filter-name>
            <filter-class>org.apache.catalina.filters.HttpHeaderSecurityFilter</filter-class>
                   <init-param>
                           <param-name>hstsEnabled</param-name>
                           <param-value>true</param-value>
                   </init-param>
                   <init-param>
                           <param-name>antiClickJackingEnabled</param-name>
                           <param-value>true</param-value>
                   </init-param>
                   <init-param>
                           <param-name>antiClickJackingOption</param-name>
                           <param-value>ALLOW-FROM</param-value>
                   </init-param>
            <async-supported>true</async-supported>
       </filter>

       <filter-mapping>
                   <filter-name>httpHeaderSecurity</filter-name>
                   <url-pattern>/*</url-pattern>
                   <dispatcher>REQUEST</dispatcher>
       </filter-mapping> 

重启Tomcat服务 使用iFrame访问资源。

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。

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.

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);

我有这个问题，并解决了它编辑httd.conf

<IfModule headers_module>
    <IfVersion >= 2.4.7 >
        Header always setifempty X-Frame-Options GOFORIT
    </IfVersion>
    <IfVersion < 2.4.7 >
        Header always merge X-Frame-Options GOFORIT
    </IfVersion>
</IfModule>

我把SAMEORIGIN改成了GOFORIT 并重新启动服务器