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XMLHttpRequest cannot load http://xxxx. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://yyyy’ is therefore not allowed access.
PHP:
<?php
header('Access-Control-Allow-Origin:*');
header('Access-Control-Allow-Headers:Origin, X-Requested-With, Content-Type, Accept');
?>
Nginx:
在nginx.conf中配置
nginx.conf位置
$ nginx -t
http {
......
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Headers X-Requested-With;
add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
}
这样就可以实现GET,POST,OPTIONS的跨域请求的支持
也可以 add_header Access-Control-Allow-Origin http://huangshiyang.com; –指定允许的url;
Node.js
app.all('*',function(req,res,next)
{
if (!req.get('Origin')) return next();
res.set('Access-Control-Allow-Origin','http://myapp.com');
res.set('Access-Control-Allow-Methods','GET,POST');
res.set('Access-Control-Allow-Headers','X-Requested-With,Content-Type');
if ('OPTIONS' == req.method) return res.send(200);
next();
});I want to add CORS support to my server
For simple CORS requests, the server only needs to add the following header to its response:
Access-Control-Allow-Origin: *
There are some more headers and settings involved if you want to support verbs other than GET/POST, custom headers, or authentication. You can learn more about these options in theUsing CORS tutorial on HTML5 Rocks.
If you want the TL;DR version, take a look at the flowchart for implementing CORS support.
If you’d like to learn more about implementing CORS for a specific platform, follow one of the links below:
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