常用小代码

/** * @desc 验证是否为IP格式 :  *    例如192.168.1.1 * @param ip * @return */public static boolean checkIP( String ip ){Pattern pattern = Pattern.compile("\\b((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\b");Matcher matcher = pattern.matcher(ip); return matcher.matches();}