思路：
修改Apache虚拟主机配置文件conf/extra/httpd-vhosts.conf，增加一个以IP作为域名的虚拟主机，然后deny from all

<VirtualHost *:80>
    DocumentRoot "D:/wwwroot"
    ServerName 112.90.144.11
    ErrorLog "logs/112.90.144.11-error.log"
    CustomLog "logs/112.90.144.11-access.log" common

<Directory "D:/wwwroot">
    Options FollowSymLinks
    AllowOverride All
    Order allow,deny
     Deny from all
</Directory>
    
</VirtualHost