匹配IP地址的正则表达式
Pattern p= Pattern.compile("([0-9]|[0-9]\\d|1\\d{2}|2[0-1]\\d|25[0-5])(\\.(\\d|[0-9]\\d|1\\d{2}|2[0-4]\\d|25[0-5])){3}");Matcher m = p.matcher(strIP);boolean match = m.matches();if(!match){ return error;}
