An in-depth analysis of Nginx's implementation of AJAX cross-domain requests

AJAX requests from one domain to another domain will have cross-domain problems. So how to implement ajax cross-domain request on nginx? This problem stumps many friends. Below I will bring you relevant knowledge about Nginx’s implementation of AJAX cross-domain request issues. Friends who are interested can learn together.

AJAX requests from one domain to another domain will have cross-domain issues. The problem. So how to implement ajax cross-domain request on nginx? To enable cross-domain requests on nginx, add_header Access-Control* directives need to be added. As shown below:

location /{
add_header 'Access-Control-Allow-Origin' 'http://other.subdomain.com';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET';
...
...
the rest of your configuration here
...
...
}

Comments are as follows:

First instruction: Authorize requests from other.subdomain.com

Second instruction: When this flag is true When responding to the request, whether it can be exposed

Third day instructions: Specify the request method, which can be GET, POST, etc.

If you need to allow access from any domain, you can configure it like this ：

Access-Control-Allow-Origin: *

Restart nginx

service nginx reload

ajax cross-domain request test

When successful, the response header is as follows:

HTTP/1.1 200 OK
Server: nginx
Access-Control-Allow-Origin: other.subdomain.com

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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