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Merge pull request #3552 from JTongChen/v5-dev

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feat: NumberChineseFormatter提供阿拉伯转中文支持多位小数的方法
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Golden Looly 2024-04-21 08:06:24 +08:00 committed by GitHub
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hutool-core/src/main/java/cn/hutool/core/convert/NumberChineseFormatter.java
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@ -2,11 +2,15 @@ package cn.hutool.core.convert;
import cn.hutool.core.lang.Assert;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.CharUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* 数字转中文类<br>
@ -43,6 +47,18 @@ public class NumberChineseFormatter {
new ChineseUnit('亿', 1_0000_0000, true),
};
/**
* 口语化映射
*/
private static final Map<String, String> COLLOQUIAL_WORDS = new HashMap<String, String>() {
{
put("一十", "十");
put("一拾", "拾");
put("负一十", "负十");
put("负一拾", "负拾");
}
};
/**
* 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.
*
@ -220,6 +236,39 @@ public class NumberChineseFormatter {
return chinese;
}
/**
* 阿拉伯数字转换成中文. 使用于整数、小数的转换.
* 支持多位小数
*
* @param amount 数字
* @param isUseTraditional 是否使用繁体
* @param isUseColloquial 是否使用口语化(e.g. 一十 -> 十)
* @return 中文
*/
public static String format(BigDecimal amount, boolean isUseTraditional, boolean isUseColloquial) {
String formatAmount;
if (amount.scale() <= 0) {
formatAmount = NumberChineseFormatter.format(amount.longValue(), isUseTraditional);
} else {
List<String> numberList = StrUtil.split(amount.toPlainString(), CharUtil.DOT);
// 小数部分逐个数字转换为汉字
StringBuilder decimalPartStr = new StringBuilder();
for (char decimalChar : numberList.get(1).toCharArray()) {
decimalPartStr.append(NumberChineseFormatter.numberCharToChinese(decimalChar, isUseTraditional));
}
formatAmount = NumberChineseFormatter.format(amount.longValue(), isUseTraditional) + "点" + decimalPartStr;
}
if (isUseColloquial) {
for (Map.Entry<String, String> colloquialWord : COLLOQUIAL_WORDS.entrySet()) {
if (formatAmount.startsWith(colloquialWord.getKey())) {
formatAmount = formatAmount.replaceFirst(colloquialWord.getKey(), colloquialWord.getValue());
break;
}
}
}
return formatAmount;
}
/**
* 数字字符转中文，非数字字符原样返回
*