How to inject custom content via Nginx?

问题

Is there a way to inject a few lines of script etc. for each served php/html/etc. page? For example some custom javascript after -tag?

I know, you should be able to use lua in nginx but is there a better solution?

I am running multiple different web application behind the nginx, so it feels proper way to do this. I don't have access source code for each application and maintaining those would be cumbersome.

回答1:

I found the way to do this: http://nginx.org/en/docs/http/ngx_http_sub_module.html

location / {
    sub_filter </head>
        '</head><script language="javascript" src="$script"></script>';
    sub_filter_once on;
}

来源：https://stackoverflow.com/questions/19700871/how-to-inject-custom-content-via-nginx