location / {

        root   /web/htdocs;

        random_index on;

        index  index.html index.htm;

        subs_filter_types   text/css text/plain application/x-javascript application/javascript;

        subs_filter         http:// 'https://';

        subs_filter         abc.org 'xyz.net';

        subs_filter         caoss.com 'css.net';//第一个参数是要被替换的，第二个参数是替换后的

        sub_filter_once     off;                //替换所有的，默认是on，替换第一个

      }

[root@cms-nginx /]# /App/nginx/sbin/nginx -t

the configuration file /App/nginx//conf/nginx.conf syntax is ok

configuration file /App/nginx//conf/nginx.conf test is successful

[root@cms-nginx /]# /App/nginx/sbin/nginx  -s reload