java中金额转换为汉字大写

   /**
     * 金额转换为汉字大写。最大数值99999999999.99
     * @param currencyDigits
     * @return
     */
    public static String convertCurrency(String currencyDigits) {
        currencyDigits=currencyDigits.replace(",","");
        String MAXIMUM_NUMBER = "99999999999.99";
        String CN_ZERO = "零";
        String CN_ONE = "壹";
        String CN_TWO = "贰";
        String CN_THREE = "叁";
        String CN_FOUR = "肆";
        String CN_FIVE = "伍";
        String CN_SIX = "陆";
        String CN_SEVEN = "柒";
        String CN_EIGHT = "捌";
        String CN_NINE = "玖";
        String CN_TEN = "拾";
        String CN_HUNDRED = "佰";
        String CN_THOUSAND = "仟";
        String CN_TEN_THOUSAND = "万";
        String CN_HUNDRED_MILLION = "亿";
        String CN_SYMBOL = "";
        String CN_DOLLAR = "元";
        String CN_TEN_CENT = "角";
        String CN_CENT = "分";
        String CN_INTEGER = "整";
       
        int zeroCount;
        String d;
        currencyDigits = currencyDigits.toString();
        if ("".equals(currencyDigits)) {
            //金额不能为空
             return "金额不能为空";
        }
        if (1 == new BigDecimal(currencyDigits).compareTo(new BigDecimal(MAXIMUM_NUMBER))) {
            //金额过大，应小于1000亿元
            return "金额过大，应小于1000亿元";
        }

        String parts[] = currencyDigits.split("[.]");
        String integral;
        String decimal;
        if (parts.length > 1) {
            integral = parts[0];
            decimal = parts[1];
            if(decimal.length()>1){
                decimal = decimal.substring(0, 2);
            }else{
                decimal = decimal.substring(0, 1);
            }

        }
        else {
            integral = parts[0];
            decimal = "";
        }
        String[] digits = {CN_ZERO, CN_ONE, CN_TWO, CN_THREE, CN_FOUR, CN_FIVE, CN_SIX, CN_SEVEN, CN_EIGHT, CN_NINE};
        String[] radices = {"", CN_TEN, CN_HUNDRED, CN_THOUSAND};
        String[] bigRadices = {"", CN_TEN_THOUSAND, CN_HUNDRED_MILLION};
        String[] decimals = {CN_TEN_CENT, CN_CENT};
        String outputCharacters = "";
        if (1 == new BigDecimal(integral).compareTo(new BigDecimal(0))) {
            zeroCount = 0;
            for (int i = 0; i < integral.length(); i++) {
                int p = integral.length() - i - 1;
                d = integral.substring(i, i+1);
                int quotient = p / 4;
                int modulus = p % 4;
                if ("0".equals(d)) {
                    zeroCount++;
                }
                else {
                    if (zeroCount > 0)
                    {
                        outputCharacters += digits[0];
                    }
                    zeroCount = 0;
                    outputCharacters += digits[Integer.parseInt(d)] + radices[modulus];
                }
                if (modulus == 0 && zeroCount < 4) {
                    outputCharacters += bigRadices[quotient];
                    zeroCount = 0;
                }
            }
            outputCharacters += CN_DOLLAR;
        }
        if (!"".equals(decimal)) {
            for (int i = 0; i < decimal.length(); i++) {
                d = decimal.substring(i, i+1);
                if (!"0".equals(d)) {
                    outputCharacters += digits[Integer.parseInt(d)] + decimals[i];
                }
            }
        }
        if ("".equals(outputCharacters)) {
            outputCharacters = CN_ZERO + CN_DOLLAR;
        }
        if ("".equals(decimal)) {
            outputCharacters += CN_INTEGER;
        }
        outputCharacters = CN_SYMBOL + outputCharacters;
        return outputCharacters;
    }

    /**
     * 测试数字转换为人民币大写
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        while(true){
            System.out.print("请输入需要转换的数字：");
            String i = sc.nextLine();
            System.out.println(convertCurrency(i));
        }
    }