数字转中文数字（123–>“壹佰贰拾叁”、“一百二十三”）

直接上代码，注释完整，各位网友如有其它好的方案，麻烦留言探讨，万分感谢！

package fun.chice.xxx;/*** 数字转中文数字工具* Created by Chice on 2018/9/5.* Email:2206143885@qq.com* CSDN:http://blog.csdn.net/chicet*/public final class NumToChineseLetterFormatter {private static final String CHINESE_NUM_FLAG_NEGATIVE = "负";private static final String CHINESE_NUM_FLAG_ZERO = "零";private static final String CHINESE_NUM_FLAG_DOUBLE_ZERO = "零零";private static final String CHINESE_NUM_FLAG_WAN = "万";private static final String CHINESE_NUM_FLAG_YI = "亿";private static final String CHINESE_NUM_FLAG_ZHAO = "兆";// 此数位存在争议，暂用“亿亿为兆”的方案private static final String[] CHINESE_NUM_UNIT = {"", "十", "百", "千"};private static final String[] CHINESE_NUM = {"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"};private static final String[] CHINESE_NUM_UNIT_OF_ACCOUNTANT = {"", "拾", "佰", "仟"};private static final String[] CHINESE_NUM_OF_ACCOUNTANT = {"零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};private static boolean isRemoveOneBeforeTenUnit = false;private static boolean isUseAccountantStyle = false;/*** <p>将数据转换成中文数字字符串</p>* <p>思路：判断正负-->四位分割-->四位转化-->拼接(按位添加位符号)-->移除前缀零、移除后缀零-->移除重复零-->输出</p>** @param num                  数字* @param isUseAccountantStyle 是否使用会计格式（会计格式用中文大写）* @return 中文数字*/public static String getNumInChineseLetter(long num, boolean isUseAccountantStyle) {if (num == 0) {return CHINESE_NUM_FLAG_ZERO;}StringBuilder builder = new StringBuilder();if (num < 0) {builder.append(CHINESE_NUM_FLAG_NEGATIVE);num = -num;}NumToChineseLetterFormatter.isUseAccountantStyle = isUseAccountantStyle;isRemoveOneBeforeTenUnit = (!isUseAccountantStyle && num < 20 && num > 9);getNumToChinese(builder, num);// 滤掉前缀零while (builder.charAt(0) == CHINESE_NUM_FLAG_ZERO.charAt(0)) {builder.deleteCharAt(0);}// 滤掉后缀零while (builder.length() > 0 && builder.charAt(builder.length() - 1) == CHINESE_NUM_FLAG_ZERO.charAt(0)) {builder.deleteCharAt(builder.length() - 1);}// 替换掉重复零int indexOfDoubleZero = builder.indexOf(CHINESE_NUM_FLAG_DOUBLE_ZERO);while (indexOfDoubleZero > -1) {builder.replace(indexOfDoubleZero, indexOfDoubleZero + 2, CHINESE_NUM_FLAG_ZERO + "");indexOfDoubleZero = builder.indexOf(CHINESE_NUM_FLAG_DOUBLE_ZERO);}return builder.toString();}/*** 把数字按位转为中文数字（尚未格式化）** @param builder stringBuilder* @param num     num*/private static void getNumToChinese(StringBuilder builder, long num) {int numLength = ("" + num).length();int numSplitCountBy4Length = (numLength + 3) / 4;for (int i = 0; i < numSplitCountBy4Length; i++) {int splitedNum = (int) (num / (long) (Math.pow(10, 4 * (numSplitCountBy4Length - i - 1))));num = (num % (long) (Math.pow(10, 4 * (numSplitCountBy4Length - i - 1))));getChinesForNumLessThan10000(builder, splitedNum);if (splitedNum >= 0) {if (i < (numSplitCountBy4Length - 4) && (numSplitCountBy4Length - i) % 4 == 1) {builder.append(CHINESE_NUM_FLAG_ZHAO);} else if (i < (numSplitCountBy4Length - 2) && (numSplitCountBy4Length - i) % 2 == 1) {builder.append(CHINESE_NUM_FLAG_YI);} else {if (i < numSplitCountBy4Length - 1)builder.append(CHINESE_NUM_FLAG_WAN);}}}}/*** 对小于一万的数字进行转换** @param builder stringBuilder* @param num     num*/private static void getChinesForNumLessThan10000(StringBuilder builder, int num) {if (num == 0) {builder.append(isUseAccountantStyle ? CHINESE_NUM_OF_ACCOUNTANT[0] : CHINESE_NUM[0]);return;}num = num % 10000;for (int i = 0; i < 4; i++) {int numInOrder = num / (int) Math.pow(10, 3 - i);num = num % (int) Math.pow(10, 3 - i);if (i == 3 && numInOrder == 0) break;if (isRemoveOneBeforeTenUnit && i == 2 && numInOrder == 1) {// 这里移除十位前面的一（一十--->十）// 为了便于理解，这个空if暂且保留} else {builder.append(isUseAccountantStyle ? CHINESE_NUM_OF_ACCOUNTANT[numInOrder] : CHINESE_NUM[numInOrder]);}if (numInOrder > 0)builder.append(isUseAccountantStyle ? CHINESE_NUM_UNIT_OF_ACCOUNTANT[3 - i] : CHINESE_NUM_UNIT[3 - i]);}}
}

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Java 数字转中文数字（会计格式与非会计格式，暂不包含小数）

数字转中文数字（123–>“壹佰贰拾叁”、“一百二十三”）

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