如 user.cxgw.com  >>转化到  www.cxgw.com/busines_info.php?user_name=user#RewriteEngine on
#RewriteCond %{HTTP_HOST} ^[a-z0-9-]+.cxgw.com$
#RewriteRule ^/?$ /%{HTTP_HOST}
#RewriteRule ^/([a-z0-9-]+).cxgw.com/?$ /busines_info.php?user_name=$1 [L]但我无法处理www.cxgw.com cxgw.com  
我必须排除以上这两个才能使网站正常访问请问如何排除www.cxgw.com  和cxgw.com 其它都可以