把数字金额转换为汉语中人民币的大写

  1 public class NumberToCNUtil {
  2 
  3     private NumberToCNUtil() { throw new IllegalStateException("Utility class"); }
  4 
  5     /**
  6      * 汉语中数字大写
  7      */
  8     private static final String[] CN_UPPER_NUMBER = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
  9     /**
 10      * 汉语中货币单位大写，这样的设计类似于占位符
 11      */
 12     private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元",
 13              "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾",
 14              "佰", "仟" };
 15     /**
 16      * 特殊字符：整
 17      */
 18     private static final String CN_FULL = "整";
 19     /**
 20      * 特殊字符：负
 21      */
 22      private static final String CN_NEGATIVE = "负";
 23     /**
 24      * 金额的精度，默认值为2
 25      */
 26     private static final int MONEY_PRECISION = 2;
 27     /**
 28      * 特殊字符：零元整
 29      */
 30     private static final String CN_ZEOR_FULL = "零元" + CN_FULL;
 31 
 32     /**
 33      * 把输入的金额转换为汉语中人民币的大写
 34      * @param numberOfMoney 输入的金额
 35      * @return 对应的汉语大写
 36      */
 37     public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {
 38         StringBuilder sb = new StringBuilder();
 39         // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or
 40         // positive.
 41         int signum = numberOfMoney.signum();
 42         // 零元整的情况
 43         if (signum == 0) {
 44             return CN_ZEOR_FULL;
 45         }
 46         //这里会进行金额的四舍五入
 47         long number = numberOfMoney.movePointRight(MONEY_PRECISION)
 48                  .setScale(0, 4).abs().longValue();
 49         // 得到小数点后两位值
 50         long scale = number % 100;
 51         int numUnit = 0;
 52         int numIndex = 0;
 53         boolean getZero = false;
 54         // 判断最后两位数，一共有四中情况：00 = 0, 01 = 1, 10, 11
 55         if (scale <= 0) {
 56             numIndex = 2;
 57             number = number / 100;
 58             getZero = true;
 59         }
 60         if ((scale > 0) && (scale % 10 <= 0)) {
 61             numIndex = 1;
 62             number = number / 10;
 63             getZero = true;
 64         }
 65         int zeroSize = 0;
 66         while (true) {
 67             if (number <= 0) {
 68                 break;
 69             }
 70             // 每次获取到最后一个数
 71             numUnit = (int) (number % 10);
 72             if (numUnit > 0) {
 73                 if ((numIndex == 9) && (zeroSize >= 3)) {
 74                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);
 75                 }
 76                 if ((numIndex == 13) && (zeroSize >= 3)) {
 77                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);
 78                 }
 79                 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 80                 sb.insert(0, CN_UPPER_NUMBER[numUnit]);
 81                 getZero = false;
 82                 zeroSize = 0;
 83             } else {
 84                 ++zeroSize;
 85                 if (!(getZero)) {
 86                     sb.insert(0, CN_UPPER_NUMBER[numUnit]);
 87                 }
 88                 if (numIndex == 2) {
 89                     if (number > 0) {
 90                         sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 91                     }
 92                 } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {
 93                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 94                 }
 95                 getZero = true;
 96             }
 97             // 让number每次都去掉最后一个数
 98             number = number / 10;
 99             ++numIndex;
100         }
101         // 如果signum == -1，则说明输入的数字为负数，就在最前面追加特殊字符：负
102         if (signum == -1) {
103             sb.insert(0, CN_NEGATIVE);
104         }
105         // 输入的数字小数点后两位为"00"的情况，则要在最后追加特殊字符：整
106         if (scale <= 0) {
107             sb.append(CN_FULL);
108         }
109         return sb.toString();
110     }
111 
112     public static String number2CNMontrayUnit(String numberOfMoney){
113         BigDecimal money = new BigDecimal(numberOfMoney);
114         return number2CNMontrayUnit(money);
115     }
116     public static String number2CNMontrayUnit(Double numberOfMoney){
117         BigDecimal money = new BigDecimal(String.valueOf(numberOfMoney));
118         return number2CNMontrayUnit(money);
119     }
120 }