server {        listen       80;        server_name  i.shequbanjing.com 172.16.201.1;        charset UTF-8;        access_log  logs/i.shequbanjing.com.access.log  main;        error_log  logs/i.shequbanjing.com.error.log  warn;        location /business/api {                if ( $http_x_forwarded_for ~ 106.14.94.192,61.50.105.10 ) {                        rewrite ^/business/(.*)$ /$1 break;                        proxy_pass http://pool_businessapi.sqbj.com_tomcat_hd;                }            proxy_pass http://pool_businessapi.sqbj.com_tomcat/api;        }        location /common/api {                if ( $http_x_forwarded_for ~ 106.14.94.192,61.50.105.10 ) {                        rewrite ^/common/(.*)$ /$1 break;                        proxy_pass http://pool_businessapi.sqbj.com_tomcat_hd;                }            proxy_pass http://pool_businessapi.sqbj.com_tomcat/api;        }        location /pay/api {                if ( $http_x_forwarded_for ~ 106.14.94.192,61.50.105.10 ) {                        rewrite ^/pay/(.*)$ /$1 break;                        proxy_pass http://pool_payapi.sqbj.com_tomcat_hd;                }            proxy_pass http://pool_payapi.sqbj.com_tomcat/api;        }        error_page   500 502 503 504  /50x.html;        location = /50x.html {            root   html;        }    }~                                                                                                                                                                                      ~