java开发_数字转换汉语中人民币的大写_完整版

 package com.b510.number2char;

 import java.math.BigDecimal;

 /**

  * 数字转换为汉语中人民币的大写<br>

  *

  * @author hongten

  * @contact hongtenzone@foxmail.com

  * @create 2013-08-13

  */

 public class NumberToCN {

     /**

      * 汉语中数字大写

      */

     private static final String[] CN_UPPER_NUMBER = { "零", "壹", "贰", "叁", "肆",

             "伍", "陆", "柒", "捌", "玖" };

     /**

      * 汉语中货币单位大写，这样的设计类似于占位符

      */

     private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元",

             "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾",

             "佰", "仟" };

     /**

      * 特殊字符：整

      */

     private static final String CN_FULL = "整";

     /**

      * 特殊字符：负

      */

     private static final String CN_NEGATIVE = "负";

     /**

      * 金额的精度，默认值为2

      */

     private static final int MONEY_PRECISION = 2;

     /**

      * 特殊字符：零元整

      */

     private static final String CN_ZEOR_FULL = "零元" + CN_FULL;

     /**

      * 把输入的金额转换为汉语中人民币的大写

      *

      * @param numberOfMoney

      *            输入的金额

      * @return 对应的汉语大写

      */

     public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {

         StringBuffer sb = new StringBuffer();

         // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or

         // positive.

         int signum = numberOfMoney.signum();

         // 零元整的情况

         if (signum == 0) {

             return CN_ZEOR_FULL;

         }

         //这里会进行金额的四舍五入

         long number = numberOfMoney.movePointRight(MONEY_PRECISION)

                 .setScale(0, 4).abs().longValue();

         // 得到小数点后两位值

         long scale = number % 100;

         int numUnit = 0;

         int numIndex = 0;

         boolean getZero = false;

         // 判断最后两位数，一共有四中情况：00 = 0, 01 = 1, 10, 11

         if (!(scale > 0)) {

             numIndex = 2;

             number = number / 100;

             getZero = true;

         }

         if ((scale > 0) && (!(scale % 10 > 0))) {

             numIndex = 1;

             number = number / 10;

             getZero = true;

         }

         int zeroSize = 0;

         while (true) {

             if (number <= 0) {

                 break;

             }

             // 每次获取到最后一个数

             numUnit = (int) (number % 10);

             if (numUnit > 0) {

                 if ((numIndex == 9) && (zeroSize >= 3)) {

                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);

                 }

                 if ((numIndex == 13) && (zeroSize >= 3)) {

                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);

                 }

                 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);

                 sb.insert(0, CN_UPPER_NUMBER[numUnit]);

                 getZero = false;

                 zeroSize = 0;

             } else {

                 ++zeroSize;

                 if (!(getZero)) {

                     sb.insert(0, CN_UPPER_NUMBER[numUnit]);

                 }

                 if (numIndex == 2) {

                     if (number > 0) {

                         sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);

                     }

                 } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {

                     sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);

                 }

                 getZero = true;

             }

             // 让number每次都去掉最后一个数

             number = number / 10;

             ++numIndex;

         }

         // 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

         if (signum == -1) {

             sb.insert(0, CN_NEGATIVE);

         }

         // 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

         if (!(scale > 0)) {

             sb.append(CN_FULL);

         }

         return sb.toString();

     }

     public static void main(String[] args) {

         double money = 2020004.01;

         BigDecimal numberOfMoney = new BigDecimal(money);

         String s = NumberToCN.number2CNMontrayUnit(numberOfMoney);

         System.out.println("你输入的金额为：【"+ money +"】   #--# [" +s.toString()+"]");

     }

 }