一些用来做数字验证的正则方法

/**
     * 是否数字正则表达式
     */
    public static final String PATTREN_ISNUMERIC = "^(-?\\d+)(\\.\\d+)?$";
    /**
     * 判断是否小数正则表达式
     **/
    public static final String PARTTENN_ISDECIMAL = "[-+]{0,1}\\d+\\.\\d*|[-+]{0,1}\\d*\\.\\d+";

    /**
     * 生成指定的位数编号,不足补零
     *
     * @param businessTypeStr
     * @param number
     * @return
     */
    public static String getStringNumber(String businessTypeStr, Long number) {
        String randomNoStr = String.format("%09d", number);
        String partyNo = businessTypeStr + randomNoStr;
        return partyNo;
    }

    /**
     * 生成指定的位数编号,不足补零
     *
     * @param businessTypeStr
     * @param number
     * @return
     */
    public static String getStringTwoNumber(String businessTypeStr, Long number) {
        String randomNoStr = String.format("%02d", number);
        String partyNo = businessTypeStr + randomNoStr;
        return partyNo;
    }




    public static String getNumWithYYYYMMDD(Long number) {
        String date = DateUtil.formatDate(new Date(), "yyyyMMdd");
        return getStringNumber(date, number);
    }

    public static String getBatchNo(Long number) {
        String date =  DateUtil.formatDate(new Date(), "yyyyMMdd");
        String randomNoStr = String.format("%05d", number);
        String partyNo = date + randomNoStr;
        return partyNo;
    }



    /***
     * 是否匹配
     * @param regex 正则表达式
     * @param str  检查字符串
     * @return 匹配则返回true, 否则返回false
     */
    private static Boolean isMatch(String regex, String str) {
        if (StringUtils.isEmpty(str)) {
            return Boolean.FALSE;
        }
        Pattern pattern = Pattern.compile(regex);
        Matcher isNum = pattern.matcher(str);
        return isNum.matches();
    }

    /***
     * 保留三位小数;
     * @param val
     * @return
     */
    public static final String scale(Double val) {
        if (val == null) {
            return "0.00%";
        }
        java.text.DecimalFormat df = new java.text.DecimalFormat("##0.00");
        return df.format(val * 100) + "%";
    }

    /***
     * 判断字符是否数字类型为：小数、正负数等
     * @param str
     * @return Boolean 是数字则返回true,否则返回fase
     */
    public static Boolean isNumeric(String str) {
        return isMatch(PATTREN_ISNUMERIC, str);
    }

    /****
     * 判断字符串是否是小数
     * @param str  字符串
     * @return
     */
    public static Boolean isDecimal(String str) {
        return isMatch(PARTTENN_ISDECIMAL, str);
    }

    /**
     * 保留三位小数  F: 111,111,11.111
     * @param ss
     * @return
     */
    public static String formatNum(Object ss){
        if (ss==null){
            return "";
        }
        DecimalFormat df  = new DecimalFormat(",###,###.###");
        String format = df.format(new BigDecimal(ss.toString()));
        Float aFloat = Float.valueOf(ss.toString());
        if (aFloat<1.0 && aFloat>0){
            String s = aFloat * 100+"" ;
            String format1 = df.format(new BigDecimal(s));
            return format1+"%";
        }
        return format;
    }