數字金額轉換為漢字金額

一、源代碼：DoubleMoneyToChineseMoney.java

  1 package cn.com.zfc.example;
  2 
  3 import java.math.BigDecimal;
  4 import java.util.Scanner;
  5 
  6 /**
  7  * 數字轉換為漢語中人民幣的大寫
  8  * 
  9  * @author zfc
 10  *
 11  */
 12 public class DoubleMoneyToChineseMoney {
 13     // 漢語中數字大寫
 14     private
 
 static final String[] CN_UPPER_NUMBER = { "零", "壹", "貳", "叁", "肆", "伍", "陸", "柒", "捌", "玖" };
 15     // 漢語中貨幣單位大寫，這樣的設計類似於占位符
 16     private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元", "拾", "佰", "仟", "萬", "拾", "佰", "仟", "億", "拾",
 17             "佰", "仟", "兆", "拾", "佰", "仟" };
 18
 
     // 特殊字符：整
 19     private static final String CN_FULL = "整";
 20     // 特殊字符：負
 21     private static final String CN_NEGATIVE = "負";
 22     // 金額的精度，默認值為2
 23     private static final int MONEY_PRECISION = 2;
 24     // 特殊字符：零元整
 25     private static final String CN_ZEOR_FULL = "零元" + CN_FULL;
 26 
 27
 
     /**
 28      * 把輸入的金額轉換為漢語中人民幣的大寫
 29      * 
 30      * @param numberOfMoney
 31      *            輸入的金額
 32      * @return 對應的漢語大寫
 33      */
 34     public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {
 35         StringBuffer sb = new StringBuffer();
 36         // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or
 37         // positive.
 38         int signum = numberOfMoney.signum();
 39         // 零元整的情況
 40         if (signum == 0) {
 41             return CN_ZEOR_FULL;
 42         }
 43         // 這裏會進行金額的四舍五入
 44         long number = numberOfMoney.movePointRight(MONEY_PRECISION).setScale(0, 4).abs().longValue();
 45         // 得到小數點後兩位值
 46         long scale = number % 100;
 47         int numUnit = 0;
 48         int numIndex = 0;
 49         boolean getZero = false;
 50         // 判斷最後兩位數，一共有四中情況：00 = 0, 01 = 1, 10, 11
 51         if (!(scale > 0)) {
 52             numIndex = 2;
 53             number = number / 100;
 54             getZero = true;
 55         }
 56         if ((scale > 0) && (!(scale % 10 > 0))) {
 57             numIndex = 1;
 58             number = number / 10;
 59             getZero = true;
 60         }
 61         int zeroSize = 0;
 62         while (true) {
 63             if (number <= 0) {
 64                 break;
 65             }
 66             // 每次獲取到最後一個數
 67             numUnit = (int) (number % 10);
 68             if (numUnit > 0) {
 69                 if ((numIndex == 9) && (zeroSize >= 3)) {
 70                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);
 71                 }
 72                 if ((numIndex == 13) && (zeroSize >= 3)) {
 73                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);
 74                 }
 75                 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 76                 sb.insert(0, CN_UPPER_NUMBER[numUnit]);
 77                 getZero = false;
 78                 zeroSize = 0;
 79             } else {
 80                 ++zeroSize;
 81                 if (!(getZero)) {
 82                     sb.insert(0, CN_UPPER_NUMBER[numUnit]);
 83                 }
 84                 if (numIndex == 2) {
 85                     if (number > 0) {
 86                         sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 87                     }
 88                 } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {
 89                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);
 90                 }
 91                 getZero = true;
 92             }
 93             // 讓number每次都去掉最後一個數
 94             number = number / 10;
 95             ++numIndex;
 96         }
 97         // 如果signum == -1，則說明輸入的數字為負數，就在最前面追加特殊字符：負
 98         if (signum == -1) {
 99             sb.insert(0, CN_NEGATIVE);
100         }
101         // 輸入的數字小數點後兩位為"00"的情況，則要在最後追加特殊字符：整
102         if (!(scale > 0)) {
103             sb.append(CN_FULL);
104         }
105         return sb.toString();
106     }
107 
108     public static void main(String[] args) {
109         System.out.println("請輸入一個數字金額：");
110         Scanner scanner = new Scanner(System.in);
111         double money = scanner.nextDouble();
112         scanner.close();
113         BigDecimal numberOfMoney = new BigDecimal(money);
114         String string = DoubleMoneyToChineseMoney.number2CNMontrayUnit(numberOfMoney);
115         System.out.println("你輸入的數為：" + money + "，其對應漢字金額：" + string.toString());
116     }
117 }

二、運行效果

數字金額轉換為漢字金額