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com.github.zhangxd1989.basetool.convert.NumberChineseFormatter Maven / Gradle / Ivy
package com.github.zhangxd1989.basetool.convert;
import com.github.zhangxd1989.basetool.util.StrUtil;
/**
* 数字转中文类
* 包括:
*
* 1. 数字转中文大写形式,比如一百二十一
* 2. 数字转金额用的大写形式,比如:壹佰贰拾壹
* 3. 转金额形式,比如:壹佰贰拾壹整
*
*
* @author sheldon
**/
public class NumberChineseFormatter {
/**
* 简体中文形式
*/
private static final String[] SIMPLE_DIGITS = {"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"};
/**
* 繁体中文形式
*/
private static final String[] TRADITIONAL_DIGITS = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};
/**
* 简体中文单位
*/
private static final String[] SIMPLE_UNITS = {"", "十", "百", "千"};
/**
* 繁体中文单位
*/
private static final String[] TRADITIONAL_UNITS = {"", "拾", "佰", "仟"};
/**
* 阿拉伯数字转换成中文,小数点后四舍五入保留两位. 使用于整数、小数的转换.
*
* @param amount 数字
* @param isUseTraditional 是否使用繁体
* @return 中文
*/
public static String format(double amount, boolean isUseTraditional) {
return format(amount, isUseTraditional, false);
}
/**
* 阿拉伯数字转换成中文,小数点后四舍五入保留两位. 使用于整数、小数的转换.
*
* @param amount 数字
* @param isUseTraditional 是否使用繁体
* @param isMoneyMode 是否为金额模式
* @return 中文
*/
public static String format(double amount, boolean isUseTraditional, boolean isMoneyMode) {
final String[] numArray = isUseTraditional ? TRADITIONAL_DIGITS : SIMPLE_DIGITS;
if (amount > 99999999999999.99 || amount < -99999999999999.99) {
throw new IllegalArgumentException("Number support only: (-99999999999999.99 ~ 99999999999999.99)!");
}
boolean negative = false;
if (amount < 0) {
negative = true;
amount = -amount;
}
long temp = Math.round(amount * 100);
int numFen = (int) (temp % 10);
temp = temp / 10;
int numJiao = (int) (temp % 10);
temp = temp / 10;
//将数字以万为单位分为多份
int[] parts = new int[20];
int numParts = 0;
for (int i = 0; temp != 0; i++) {
int part = (int) (temp % 10000);
parts[i] = part;
numParts++;
temp = temp / 10000;
}
// 标志“万”下面一级是不是 0
boolean beforeWanIsZero = true;
StringBuilder chineseStr = new StringBuilder(StrUtil.EMPTY);
for (int i = 0; i < numParts; i++) {
String partChinese = toChinese(parts[i], isUseTraditional);
if (i % 2 == 0) {
beforeWanIsZero = StrUtil.isEmpty(partChinese);
}
if (i != 0) {
if (i % 2 == 0) {
chineseStr.insert(0, "亿");
} else {
if ("".equals(partChinese) && !beforeWanIsZero) {
// 如果“万”对应的 part 为 0,而“万”下面一级不为 0,则不加“万”,而加“零”
chineseStr.insert(0, "零");
} else {
if (parts[i - 1] < 1000 && parts[i - 1] > 0) {
// 如果"万"的部分不为 0, 而"万"前面的部分小于 1000 大于 0, 则万后面应该跟“零”
chineseStr.insert(0, "零");
}
chineseStr.insert(0, "万");
}
}
}
chineseStr.insert(0, partChinese);
}
// 整数部分为 0, 则表达为"零"
if (StrUtil.EMPTY.equals(chineseStr.toString())) {
chineseStr = new StringBuilder(numArray[0]);
}
//负数
if (negative) {
// 整数部分不为 0
chineseStr.insert(0, "负");
}
// 小数部分
if (numFen != 0 || numJiao != 0) {
if (numFen == 0) {
chineseStr.append(isMoneyMode ? "元" : "点").append(numArray[numJiao]).append(isMoneyMode ? "角" : "");
} else {
// “分”数不为 0
if (numJiao == 0) {
chineseStr.append(isMoneyMode ? "元零" : "点零").append(numArray[numFen]).append(isMoneyMode ? "分" : "");
} else {
chineseStr.append(isMoneyMode ? "元" : "点").append(numArray[numJiao]).append(isMoneyMode ? "角" : "").append(numArray[numFen]).append(isMoneyMode ? "分" : "");
}
}
} else if (isMoneyMode) {
//无小数部分的金额结尾
chineseStr.append("元整");
}
return chineseStr.toString();
}
/**
* 把一个 0~9999 之间的整数转换为汉字的字符串,如果是 0 则返回 ""
*
* @param amountPart 数字部分
* @param isUseTraditional 是否使用繁体单位
* @return 转换后的汉字
*/
private static String toChinese(int amountPart, boolean isUseTraditional) {
String[] numArray = isUseTraditional ? TRADITIONAL_DIGITS : SIMPLE_DIGITS;
String[] units = isUseTraditional ? TRADITIONAL_UNITS : SIMPLE_UNITS;
int temp = amountPart;
StringBuilder chineseStr = new StringBuilder();
// 在从低位往高位循环时,记录上一位数字是不是 0
boolean lastIsZero = true;
for (int i = 0; temp > 0; i++) {
int digit = temp % 10;
if (digit == 0) {
// 取到的数字为 0
if (!lastIsZero) {
// 前一个数字不是 0,则在当前汉字串前加“零”字;
chineseStr.insert(0, "零");
}
lastIsZero = true;
} else { // 取到的数字不是 0
chineseStr.insert(0, numArray[digit] + units[i]);
lastIsZero = false;
}
temp = temp / 10;
}
return chineseStr.toString();
}
}