javascript – Symfony2:允许使用谷歌图表访问Access-Control-Allow-Origin
作者:互联网
在我的Symfony应用程序中,我使用的是谷歌图表.
我收到一个错误:
XMLHttpRequest cannot load https://www.google.com/uds/api/visualization/1.0/dca88b1ff7033fac80178eb526cb263e/ui+en.css. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://foodmeup.dev' is therefore not allowed access.
我试图通过设置一个监听器来解决这个问题,该监听器为响应添加标题(请参阅此处的cors监听器:Symfony2 – how can I set custom Headers?)并且它不起作用,我得到了相同的错误.
<?php
namespace AppBundle\EventListener;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
class CorsListener
{
public function onKernelResponse(FilterResponseEvent $event)
{
$response = $event->getResponse();
$responseHeaders = $response->headers;
$responseHeaders->set('Access-Control-Allow-Headers', 'origin, content-type, accept');
$responseHeaders->set('Access-Control-Allow-Origin', '*');
$responseHeaders->set('Access-Control-Allow-Methods', 'POST, GET, PUT, DELETE, PATCH, OPTIONS');
$event->setResponse($response);
}
}
在我看来,我使用一个简单的谷歌图表:
<div class="piechart margin-auto" style="height: 220px;" data-completeness="{{ completeness }}"></div>
<script>var googleCharts = [];</script>
<script type="text/javascript">
function drawProfilePieCharts()
{
var completeness = $(this).data('completeness');
var data = google.visualization.arrayToDataTable([
['Nom', 'Valeur'],
["Profil rempli à ", completeness],
['Manque', 100 - completeness]
]);
var options = {
backgroundColor: { fill:'transparent'},
pieSliceBorderColor : 'transparent',
pieHole: 0.8,
legend: {position: 'top'},
width: 220,
height: 220,
tooltip: {trigger: 'none'},
pieStartAngle: -90,
pieSliceTextStyle :{fontsize : 16, color: 'transparent'},
slices: {
0: { color: '#09b4ff'},
1: { color: '#444'}
},
chartArea : {width: '90%', height: '90%'}
};
var chart = new google.visualization.PieChart(this);
chart.draw(data, options);
}
googleCharts.push("$('.piechart').each(drawProfilePieCharts)");
$(window).resize(function(){
drawAllCharts();
});
google.load('visualization', '1', {packages:['corechart', 'bar', 'line']});
var drawAllCharts = function() {
for (var i = 0; i < googleCharts.length; i++) {
eval(googleCharts[i]);
}
};
google.setOnLoadCallback(function(){drawAllCharts()});
</script>
解决方法:
试图只在响应上设置标题,它工作:
$response->headers->set('Access-Control-Allow-Origin', 'http://foodmeup.dev');
考虑到URL必须完全是预期的URL,使用HTTP或HTTPS,最后不使用/.
可以设置多个这些标头,在我的情况下,我使用4,HTTP和HTTPS,开发和prod服务器.一切正常.
标签:javascript,same-origin-policy,xmlhttprequest,symfony,html 来源: https://codeday.me/bug/20190715/1466410.html