Java 将数字金额转成中文大写

Java 可以通过如下代码将数字金额转成中文大写：

import java.math.BigDecimal;

public class MoneyToChinese {
    private static final String[] CN_UPPER_NUMBER = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};
    private static final String[] CN_UPPER_MONETARY_UNIT = {"分", "角", "元", "拾", "佰", "仟", "万", "亿", "兆"};

    public static String toChinese(BigDecimal money) {
        StringBuilder sb = new StringBuilder();
        int signum = money.signum();
        if (signum == 0) {
            return CN_UPPER_NUMBER[0] + CN_UPPER_MONETARY_UNIT[2];
        }
        long number = money.movePointRight(2).setScale(0, BigDecimal.ROUND_HALF_UP).abs().longValue();
        long scale = number % 100;
        int numIndex = 0;
        int unitIndex = 0;
        boolean isZero = true;
        if (scale <= 0) {
            unitIndex = 2;
            number /= 100;
            isZero = false;
        }
        if (number > 0) {
            while (number > 0) {
                long d = number % 10;
                if (d > 0) {
                    if (unitIndex == 6 && numIndex == 0) {
                        sb.insert(0, CN_UPPER_MONETARY_UNIT[unitIndex]);
                    }
                    if (unitIndex == 7 && numIndex == 0) {
                        sb.insert(0, CN_UPPER_MONETARY_UNIT[unitIndex]);
                    }
                    sb.insert(0, CN_UPPER_MONETARY_UNIT[unitIndex]);
                    sb.insert(0, CN_UPPER_NUMBER[(int) d]);
                    isZero = false;
                } else {
                    if (!isZero) {
                        sb.insert(0, CN_UPPER_NUMBER[0]);
                    }
                    isZero = true;
                }
                numIndex++;
                number /= 10;
                if (numIndex == 2 && number > 0) {
                    sb.insert(0, CN_UPPER_MONETARY_UNIT[unitIndex]);
                    isZero = true;
                }
                unitIndex++;
            }
        }
        if (isZero) {
            sb.insert(0, CN_UPPER_NUMBER[0]);
        }
        sb.insert(0, CN_UPPER_MONETARY_UNIT[2]);
        return sb.toString();
    }
}

使用方法如下：

BigDecimal money = new BigDecimal("12345.67");
System.out.println(MoneyToChinese.toChinese(money)); // 壹万贰仟叁佰肆拾伍元陆角柒分