内网nginx代理高德问题

A为外网服务器

B为内网服务器
nginx配置

    server {
        listen       8081;
        server_name  15.72.185.21;
	location /webapi/ {
        proxy_pass http://15.72.191.145:18090/;
	}
	location /restapi {
	    proxy_pass http://15.72.191.145:18090/restapi/;
	}
    location /maps {
        proxy_set_header Accept-Encoding "";
        proxy_pass http://15.72.191.145:18090/maps/;
        sub_filter_types *;
        sub_filter_once off;
        sub_filter 'http://webapi.amap.com' 'http://15.72.191.145:18090/webapi';
        sub_filter 'https://webapi.amap.com' 'http://15.72.191.145:18090/';
        sub_filter 'http://restapi.amap.com' 'http://15.72.191.145:18090/restapi';
        sub_filter 'http://vdata.amap.com' 'http://15.72.191.145:18090/vdata';
        sub_filter 'vdata.amap.com' '15.72.191.145:18090/vdata';
        sub_filter 'vdata0{1,2,3,4}.amap.com' '15.72.191.145:18090/vdata0{1,2,3,4}';
        sub_filter '{vdata,vdata01,vdata02,vdata03,vdata04}.amap.com' '15.72.191.145:18090/{vdata,vdata01,vdata02,vdata03,vdata04}';
        sub_filter 'webapi.amap.com/count' '15.72.191.145:18090/count';
        sub_filter 'wprd0{1,2,3,4}.is.autonavi.com' '15.72.191.145:18090/wprd0{1,2,3,4}';
        sub_filter 'webapi.amap.com/theme' '15.72.191.145:18090/theme';
        sub_filter 'restapi.amap.com/v4' '15.72.191.145:18090/restapi/v4';
        sub_filter 'webapi.amap.com/style' '15.72.191.145:18090/style';
	    sub_filter 'https' 'http';
	}
	location /vdata {
            proxy_pass http://15.72.191.145:18090/vdata/;
	}
	location /vdata01 {
            proxy_pass http://15.72.191.145:18090/vdata01/;
	}
	location /vdata02 {
            proxy_pass http://15.72.191.145:18090/vdata02/;
	}
        location /vdata03 {
            proxy_pass http://15.72.191.145:18090/vdata03/;
        }
        location /vdata04 {
            proxy_pass http://15.72.191.145:18090/vdata04/;
        }

    }

webapi注意 / ，可能是我对nginx的location匹配规则还不熟悉，大坑，目前这么配置是能成功访问高德的