## java BigDecimal金额转中文大写

``````package com.example.sa_token_01.util;

import java.math.BigDecimal;

public class MoneyBigUtil {

/**
* 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 = 3000.66;
BigDecimal numberOfMoney = new BigDecimal(money);
String s = number2CNMontrayUnit(numberOfMoney);
System.out.println("你输入的金额为：【" + money + "】   #--# [" + s.toString()
+ "]");

}

}
``````