1 package com.b510.number2char;2

3 import java.math.BigDecimal;4

5 /**6 * 数字转换为汉语中人民币的大写

7 *8 * @author hongten9 * @contact hongtenzone@foxmail.com10 * @create 2013-08-1311 */12 public class NumberToCN {13 /**14 * 汉语中数字大写15 */16 private static final String[] CN_UPPER_NUMBER = { "零", "壹", "贰", "叁", "肆",17 "伍", "陆", "柒", "捌", "玖" };18 /**19 * 汉语中货币单位大写，这样的设计类似于占位符20 */21 private static final String[] CN_UPPER_MONETRAY_UNIT = { "分", "角", "元",22 "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾",23 "佰", "仟" };24 /**25 * 特殊字符：整26 */27 private static final String CN_FULL = "整";28 /**29 * 特殊字符：负30 */31 private static final String CN_NEGATIVE = "负";32 /**33 * 金额的精度，默认值为234 */35 private static final int MONEY_PRECISION = 2;36 /**37 * 特殊字符：零元整38 */39 private static final String CN_ZEOR_FULL = "零元" + CN_FULL;40

41 /**42 * 把输入的金额转换为汉语中人民币的大写43 *44 * @param numberOfMoney45 * 输入的金额46 * @return 对应的汉语大写47 */48 public static String number2CNMontrayUnit(BigDecimal numberOfMoney) {49 StringBuffer sb = new StringBuffer();50 // -1, 0, or 1 as the value of this BigDecimal is negative, zero, or51 // positive.52 int signum = numberOfMoney.signum();53 // 零元整的情况54 if (signum == 0) {55 return CN_ZEOR_FULL;56 }57 //这里会进行金额的四舍五入58 long number = numberOfMoney.movePointRight(MONEY_PRECISION)59 .setScale(0, 4).abs().longValue();60 // 得到小数点后两位值61 long scale = number % 100;62 int numUnit = 0;63 int numIndex = 0;64 boolean getZero = false;65 // 判断最后两位数，一共有四中情况：00 = 0, 01 = 1, 10, 1166 if (!(scale > 0)) {67 numIndex = 2;68 number = number / 100;69 getZero = true;70 }71 if ((scale > 0) && (!(scale % 10 > 0))) {72 numIndex = 1;73 number = number / 10;74 getZero = true;75 }76 int zeroSize = 0;77 while (true) {78 if (number <= 0) {79 break;80 }81 // 每次获取到最后一个数82 numUnit= (int)(number % 10);83 if (numUnit>0) {84 if ((numIndex == 9) && (zeroSize >= 3)) {85 sb.insert(0, CN_UPPER_MONETRAY_UNIT[6]);86 }87 if ((numIndex == 13) && (zeroSize >= 3)) {88 sb.insert(0, CN_UPPER_MONETRAY_UNIT[10]);89 }90 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);91 sb.insert(0, CN_UPPER_NUMBER[numUnit]);92 getZero = false;93 zeroSize = 0;94 } else {95 ++zeroSize;96 if (!(getZero)) {97 sb.insert(0, CN_UPPER_NUMBER[numUnit]);98 }99 if (numIndex == 2) {100 if (number > 0) {101 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);102 }103 } else if (((numIndex - 2) % 4 == 0) && (number % 1000 > 0)) {104 sb.insert(0, CN_UPPER_MONETRAY_UNIT[numIndex]);105 }106 getZero = true;107 }108 // 让number每次都去掉最后一个数109 number = number / 10;110 ++numIndex;111 }112 // 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113 if (signum == -1) {114 sb.insert(0, CN_NEGATIVE);115 }116 // 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117 if (!(scale > 0)) {118 sb.append(CN_FULL);119 }120 return sb.toString();121 }122

123 public static void main(String[] args) {124 double money = 2020004.01;125 BigDecimal numberOfMoney = new BigDecimal(money);126 String s = NumberToCN.number2CNMontrayUnit(numberOfMoney);127 System.out.println("你输入的金额为：【"+ money +"】 #--# [" +s.toString()+"]");128 }129 }