Java数字金额转为大写金额（正则表达式）

发表时间： 2017-09-21 15:34:41 | 浏览次数：

直接贴上代码：

public static String digitUppercase(double n){
    String fraction[] = {"角", "分"};
    String digit[]    = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
    String unit[][]   = {{"元", "万", "亿"}, {"", "拾", "佰", "仟"}};
    String head = n < 0 ? "负": "";
    n = Math.abs(n);
    String s = "";
    for (int i = 0; i < fraction.length; i++) {
        double f1 = new BigDecimal(n).setScale(2,BigDecimal.ROUND_HALF_UP).multiply(new BigDecimal(10 * Math.pow(10, i))).doubleValue();
        s += (digit[(int) (Math.floor(f1) % 10)] + fraction[i]).replaceAll("(零.)+", "");
    }
    if(s.length()<1) s = "整";   
    int integerPart = (int)Math.floor(n);
    for (int i = 0; i < unit[0].length && integerPart > 0; i++) {
        String p ="";
        for (int j = 0; j < unit[1].length && n > 0; j++) {
            p = digit[integerPart%10]+unit[1][j] + p;
            integerPart = integerPart/10;
        }
        s = p.replaceAll("(零.)*零$", "").replaceAll("^$", "零") + unit[0][i] + s;
    }
    return head + s.replaceAll("(零.)*零元", "元").replaceFirst("(零.)+", "").replaceAll("(零.)+", "零").replaceAll("^整$", "零元整");
}
 
//调用代码
public static void main(String[] args) {
    System.out.println(digitUppercase(10000)); //壹万元整
    System.out.println(digitUppercase(123)); //壹佰贰拾叁元整
    System.out.println(digitUppercase(123.00)); //壹佰贰拾叁元整
    System.out.println(digitUppercase(123123.12)); //壹拾贰万叁仟壹佰贰拾叁元壹角贰分
    System.out.println(digitUppercase(123456789.12)); //壹亿贰仟叁佰肆拾伍万陆仟柒佰捌拾玖元壹角贰分
}