使用XDomainRequest调用跨域AJAX时权限被拒绝错误
[英]Permission denied error when invoking cross domain AJAX using XDomainRequest
问题描述
I have created a php page that makes use of Google Javascript APIs. 
我创建了一个使用Google Javascript API的php页面。 I am trying to use Ajax to populate the info windows of the markers dynamically, but get a permission denied error on the xdr.open line. 我试图使用Ajax动态填充标记的信息窗口，但在xdr.open行上获得权限被拒绝错误。 I have checked the other posts relating to similar errors, and tried different changes, but still the same error. 我检查了与类似错误有关的其他帖子，并尝试了不同的更改，但仍然是同样的错误。
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
</style>
<script type=text/javascript>
var marker;
var map;
var xdr;
function loader()
{
alert("XDR onload");
alert("Got: " + xdr.responseText);
}
function Info(pmarker)
{
google.maps.event.addListener(pmarker, 'mouseover', function()
{
if (window.XDomainRequest)
{
xdr = new XDomainRequest();
if(xdr)
{
document.write('1');
xdr.open("GET", "http://localhost/GMap/GroovyCaller.php?Node=Host1");
xdr.send();
document.write('2');
xdr.onload = loader;
}
else
{
document.write('3');
alert('Failed to create');
}
}
else
{
document.write('4');
alert('XDR does not exist');
}
});
}
function createMarker() {
var myLatlng = new google.maps.LatLng(-34.397, 150.644);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title:"Hello World!"
});
Info(marker);
}
function initialize()
{
var latlng = new google.maps.LatLng(-34.397, 150.644);
var myOptions =
{
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
createMarker();
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%"></div>
</body>
</html>
2 个解决方案
解决方案1
2 2012-09-20 11:46:48
I had a similar issue to this where I had client-side code running on a local domain (eg www.domain.local ) that was trying to contact a server at localhost . 我有一个类似的问题，我在本地域（例如www.domain.local ）上运行客户端代码，试图联系localhost的服务器。 Even when I added Access-Control-Allow-Origin: * to the servers response headers I was still getting Access Denied. 即使我在服务器响应头中添加了Access-Control-Allow-Origin: * ，我仍然得到Access Denied。
Turns out XDomainRequest does not like trying to access localhost from another domain. 事实证明XDomainRequest不喜欢尝试从另一个域访问localhost。 See point 6 of http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx . 请参阅http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx的第6点。
My solution was create another fake domain pointing to localhost using my hosts file and then pointing XDR at that new domain instead. 我的解决方案是创建另一个伪域，使用我的hosts文件指向localhost，然后将XDR指向该新域。
解决方案2
1 2011-11-18 03:36:49
Is GroovyCaller.php returning the http header Access-Control-Allow-Origin ? GroovyCaller.php是否返回http标头Access-Control-Allow-Origin ？ From http://msdn.microsoft.com/en-us/library/cc288060(v=vs.85).aspx : 从http://msdn.microsoft.com/zh-cn/library/cc288060(v=vs.85).aspx ：
Cross-domain requests require mutual consent between the document and the server.
Your server must know about your client to accept a cross domain connection. 您的服务器必须知道您的客户端才能接受跨域连接。 You can start with Access-Control-Allow-Origin: * to get it working, and then narrow it down. 您可以从Access-Control-Allow-Origin: *开始使其工作，然后缩小范围。
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