参数校验工具类

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public class ParamUtil {

    public static Pattern phoneNumPattern = Pattern.compile("^1[0-9]{10}$");
    public static Pattern emailPattern = Pattern.compile("^(\\w)+(\\.\\w+)*@(\\w)+((\\.\\w{2,3}){1,2})");
    public static Pattern zeroPattern = Pattern.compile("[0](\\s|\\S)*");

    /**
     * 验证参数是否为NULL
     * @param ob
     * @return
     */
    public static boolean isNull(Object o) {
        Optional<Object> optional = Optional.fromNullable(o);
        if (optional.isPresent()) {
            return false;
        }
        return true;
    }

    /**
     * 验证参数是否为NULL
     * @param o
     * @return
     */
    public static boolean isNotNull(Object o) {
        return !isNull(o);
    }

    /**
     * 验证
     * @param i
     * @return
     */
    public static boolean isPositive(Integer i) {
        if (isNotNull(i) && i.compareTo(NumberUtils.INTEGER_ZERO) > 0) {
            return true;
        }
        return false;
    }

    public static boolean isPositive(Long l) {
        if (isNotNull(l) && l.compareTo(NumberUtils.LONG_ZERO) > 0 ) {
            return true;
        }
        return false;
    }

    public static boolean isPositive(Byte b) {
        if (isNotNull(b) && b.compareTo(NumberUtils.BYTE_ZERO) > 0) {
            return true;
        }
        return false;
    }

    public static boolean isNaturalNumber(Integer i) {
        if(isNotNull(i) && i.compareTo(NumberUtils.INTEGER_ZERO) >= 0) {
            return true;
        }
        return false;
    }

    public static boolean isNaturalNumber(Long l) {
        if(isNotNull(l) && l.compareTo(NumberUtils.LONG_ZERO) >= 0) {
            return true;
        }
        return false;
    }

    public static boolean isNaturalNumber(Byte i) {
        if(isNotNull(i) && i.compareTo(NumberUtils.BYTE_ZERO) >= 0) {
            return true;
        }
        return false;
    }


    /**
     * 电话号码验证
     *
     * @param phoneNum
     * @return
     */
    public static boolean isPhoneNum(String phoneNum) {
        if (isNull(phoneNum)) {
            return false;
        }
        Matcher m = phoneNumPattern.matcher(phoneNum);
        return m.matches();
    }

    /**
     * 电子邮件验证
     *
     * @param email
     * @return
     */
    public static boolean isEmail(String email) {
        if (isNull(email)) {
            return false;
        }
//        String str = "^([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
        Matcher m = emailPattern.matcher(email);
        return m.matches();
    }

    /**
     * 第一位是否为零
     *
     * @param numString
     * @return
     */
    public static boolean isZero(String numString) {
        if (isNull(numString)) {
            return false;
        }
        Matcher m = zeroPattern.matcher(numString);
        return m.matches();
    }
}