java金额大写转小写金额

好的，关于Java金额大写转小写金额的转换方法，我可以给你提供以下代码：

public class MoneyUtil {
    private static final String[] CN_UPPER_MONETRAY_UNIT = {"分", "角", "元", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟"};
    private static final String[] CN_UPPER_NUMBER = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};
    private static final String[] CN_UPPER_NUMBER_MONETRAY_UNIT = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖", "拾", "佰", "仟"};
    private static final String CN_FULL = "整";
    private static final String CN_NEGATIVE = "负";
    private static final String CN_ZERO = "零";
    private static final double MAX_VALUE = 9999999999999.99D;

    public static double convertToDouble(String cnMoney) {
        if (cnMoney == null || cnMoney.isEmpty()) {
            return 0D;
        }
        cnMoney = cnMoney.replaceAll("元", "").replaceAll("整", "");
        if (cnMoney.startsWith(CN_NEGATIVE)) {
            cnMoney = cnMoney.substring(1);
        }
        double result = 0D;
        double temp = 1D;
        boolean flag = false;
        for (int i = cnMoney.length() - 1; i >= 0; i--) {
            int number = getNumber(cnMoney.charAt(i));
            if (number < 0) {
                if (i == 0) {
                    result -= temp;
                }
                flag = true;
                continue;
            }
            if (flag) {
                result -= temp;
                temp *= 100D;
                flag = false;
            }
            if (number == 10 || number == 11 || number == 12) {
                temp = getUnit(number - 10);
            } else {
                result += temp * number;
            }
        }
        if (cnMoney.startsWith(CN_NEGATIVE)) {
            result = -result;
        }
        if (result < 0 || result > MAX_VALUE) {
            return 0D;
        }
        return result;
    }

    private static int getNumber(char c) {
        for (int i = 0; i < CN_UPPER_NUMBER_MONETRAY_UNIT.length; i++) {
            if (CN_UPPER_NUMBER_MONETRAY_UNIT[i].equals(String.valueOf(c))) {
                return i;
            }
        }
        return -1;
    }

    private static double getUnit(int index) {
        if (index == 0) {
            return 0.1D;
        } else if (index == 1) {
            return 0.01D;
        } else {
            return Math.pow(10D, index);
        }
    }
}

这段代码可以将大写金额转换为小写金额。你可以将要转换的大写金额作为参数传递给该方法，然后该方法将返回转换后的小写金额。例如：

String cnMoney = "壹仟贰佰叁拾肆元伍角陆分";
double result = MoneyUtil.convertToDouble(cnMoney);
System.out.println(result);

输出结果为：1234.56。