IP地址正则表达式
(((25[0-5])|(2[0-4]\d)|(1\d{2})|([1-9]\d)|(\d))\.){3}((25[0-5])|(2[0-4]\d)|(1\d{2})|([1-9]\d)|(\d))


如果要支持 220.181.108.80 和116.179.32.* 则用
(((25[0-5])|(2[0-4]\d)|(1\d{2})|([1-9]\d)|(\d))\.){3}(\*|((25[0-5])|(2[0-4]\d)|(1\d{2})|([1-9]\d)|(\d)))


