nginx config sample about proxy
server {
     	listen       9222;
        server_name  localhost;
        root   /usr/share/nginx/html/mall-admin/;
 	location / {
   		autoindex on;
   		try_files $uri $uri/ /index.html;
 	}
 	location /api/ {
   		proxy_pass https://www.sitmall.test.bizvane.cn/api/;
 	}	
}