[root@www logs]# vim /usr/local/apache2/conf/extra/httpd-vhosts.conf

 ErrorLog "logs/www.123.com-error_log"

        SetEnvIf Request_URI ".*\.gif$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.jpg$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.png$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.bmp$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.swf$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.js$" p_w_picpath-request

        SetEnvIf Request_URI ".*\.css$" p_w_picpath-request

    CustomLog "|/usr/local/apache2/bin/rotatelogs -l /usr/local/apache2/logs/www.123.com-access_%Y%m%d_log 86400" combined env=!p_w_picpath-request

在ErrorLog "logs/www.123.com-error_log"和CustomLog "|/usr/local/apache2/bin/rotatelogs -l /usr/local/apache2/logs/www.123.com-access_%Y%m%d_log 86400" combined之间插入以SetEnvIf开头的内容，并且在CustomLog "|/usr/local/apache2/bin/rotatelogs -l /usr/local/apache2/logs/www.123.com-access_%Y%m%d_log 86400" combined末尾插入env=!p_w_picpath-request