OC使用正则判断是否iP地址

• (BOOL) isValidatePassword:(NSString *)str
  { //以字母开头，只能包含“字母”，“数字”，长度6~18
  NSString *regex = @"^([a-zA-Z]|[a-zA-Z0-9]|[0-9]){6,18}$";
  NSPredicate *ipv4Regx = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  return [ipv4Regx evaluateWithObject:str];
  }

/// 是否ipv6合法
/// @param mobile 字符串地址

• (BOOL)isIPV4Validate:(NSString *)str {
  NSString *regex = @"^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$";
  NSPredicate *ipv6Regx = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
  return [ipv6Regx evaluateWithObject:str];
  }