java如何将数字转为中文大写

Question

如题所述

Answer 1

import org.apache.commons.lang3.StringUtils;

/**
* @Title: ConvertUpMoney
* @Description: 将数字金额转换为大写中文金额
* @date: 2019年6月18日 下午10:52:27
*/
public class ConvertUpMoney {

// 大写数字
private static final String[] NUMBERS = {"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
// 整数部分的单位
private static final String[] IUNIT = {"元","拾","佰","仟","万","拾","佰","仟","亿","拾","佰","仟","万","拾","佰","仟"};
// 小数部分的单位
private static final String[] DUNIT = {"角","分","厘"};

/**
* 转换为大写的中文金额
* @param str 字符串类型的 金额数字
* @return
*/
public static String toChinese(String str) {
// 判断输入的金额字符串是否符合要求
if (StringUtils.isBlank(str) || !str.matches("(-)?[\\d]*(.)?[\\d]*")) {
return "抱歉，请输入数字！";
}

if("0".equals(str) || "0.00".equals(str) || "0.0".equals(str)) {
return "零元";
}

// 判断金额数字中是否存在负号"-"
boolean flag = false;
if(str.startsWith("-")){
// 标志位，标志此金额数字为负数
flag = true;
str = str.replaceAll("-", "");
}

// 去掉金额数字中的逗号","
str = str.replaceAll(",", "");
String integerStr;//整数部分数字
String decimalStr;//小数部分数字

// 初始化：分离整数部分和小数部分
if(str.indexOf(".")>0) {
integerStr = str.substring(0,str.indexOf("."));
decimalStr = str.substring(str.indexOf(".") + 1);
}else if(str.indexOf(".")==0) {
integerStr = "";
decimalStr = str.substring(1);
}else {
integerStr = str;
decimalStr = "";
}

// beyond超出计算能力，直接返回
if(integerStr.length()>IUNIT.length) {
return "超出计算能力！";
}

// 整数部分数字
int[] integers = toIntArray(integerStr);
// 判断整数部分是否存在输入012的情况
if (integers.length>1 && integers[0] == 0) {
return "抱歉，输入数字不符合要求！";
}
// 设置万单位
boolean isWan = isWan5(integerStr);
// 小数部分数字
int[] decimals = toIntArray(decimalStr);
// 返回最终的大写金额
String result = getChineseInteger(integers, isWan) + getChineseDecimal(decimals);
if(flag){
// 如果是负数，加上"负"
return "负" + result;
}else{
return result;
}
}

/**
* 将字符串转为int数组
* @param number 数字
* @return
*/
private static int[] toIntArray(String number) {
int[] array = new int[number.length()];
for(int i = 0;i<number.length();i++) {
array[i] = Integer.parseInt(number.substring(i,i+1));
}
return array;
}

/**
* 将整数部分转为大写的金额
* @param integers 整数部分数字
* @param isWan 整数部分是否已经是达到【万】
* @return
*/
public static String getChineseInteger(int[] integers,boolean isWan) {
StringBuffer chineseInteger = new StringBuffer("");
int length = integers.length;
if (length == 1 && integers[0] == 0) {
return "";
}
for(int i=0; i<length; i++) {
String key = "";
if(integers[i] == 0) {
if((length - i) == 13)//万（亿）
key = IUNIT[4];
else if((length - i) == 9) {//亿
key = IUNIT[8];
}else if((length - i) == 5 && isWan) {//万
key = IUNIT[4];
}else if((length - i) == 1) {//元
key = IUNIT[0];
}
if((length - i)>1 && integers[i+1]!=0) {
key += NUMBERS[0];
}
}
chineseInteger.append(integers[i]==0?key:(NUMBERS[integers[i]]+IUNIT[length - i -1]));
}
return chineseInteger.toString();
}

/**
* 将小数部分转为大写的金额
* @param decimals 小数部分的数字
* @return
*/
private static String getChineseDecimal(int[] decimals) {
StringBuffer chineseDecimal = new StringBuffer("");
for(int i = 0;i<decimals.length;i++) {
if(i == 3) {
break;
}
chineseDecimal.append(decimals[i]==0?"":(NUMBERS[decimals[i]]+DUNIT[i]));
}
return chineseDecimal.toString();
}

/**
* 判断当前整数部分是否已经是达到【万】
* @param integerStr 整数部分数字
* @return
*/
private static boolean isWan5(String integerStr) {
int length = integerStr.length();
if(length > 4) {
String subInteger = "";
if(length > 8) {
subInteger = integerStr.substring(length- 8,length -4);
}else {
subInteger = integerStr.substring(0,length - 4);
}
return Integer.parseInt(subInteger) > 0;
}else {
return false;
}
}

// Test
public static void main(String[] args) {
String number = "12.56";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "1234567890563886.123";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "1600";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "156,0";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "-156,0";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "0.12";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "0.0";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "01.12";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "0125";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "-0125";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

number = "sdw5655";
System.out.println(number+": "+ConvertUpMoney.toChinese(number));

System.out.println(null+": "+ConvertUpMoney.toChinese(null));
}
}