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@@ -8,54 +8,110 @@ import java.math.BigDecimal;
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*/
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public class BigDecimalUtils {
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+ private static final String[] units = {
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+ "", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten",
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+ "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen",
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+ "Eighteen", "Nineteen"
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+ };
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+
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+ private static final String[] tens = {
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+ "", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"
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+ };
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+
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/**
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* 数字转英文大写
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*
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* @param number 数字
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* @return 结果
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*/
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- public static String convertToEnglish(BigDecimal number) {
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+ public static String convertToEnglish(BigDecimal number, Boolean toUpper) {
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BigDecimal integerPart = number.setScale(0, BigDecimal.ROUND_DOWN);
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String decimal = number.toString();
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+ String res = "";
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if (decimal.indexOf(".") > 0) {
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BigDecimal decimalAmount = new BigDecimal(decimal.substring(decimal.indexOf(".") + 1));
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- long integralPart = integerPart.longValue();
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+ int integralPart = integerPart.intValue();
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String uppercaseInteger = convert(integralPart).trim();
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if (new BigDecimal("0.00").compareTo(decimalAmount) != 0) {
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- uppercaseInteger = uppercaseInteger + " POINT " + convert(decimalAmount.longValue()).trim();
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+ uppercaseInteger = uppercaseInteger + " POINT " + convert(decimalAmount.intValue()).trim();
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}
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- return uppercaseInteger;
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+ res = uppercaseInteger;
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} else {
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- long integralPart = integerPart.longValue();
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- return convert(integralPart).trim();
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+ int integralPart = integerPart.intValue();
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+ res = convert(integralPart).trim();
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}
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+
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+ return toUpper==true ? res.toUpperCase() : res;
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}
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- private static String convert(long number) {
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- if (number == 0) return "ZERO";
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+ public static String convertToEnglish(BigDecimal number) {
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+ return convertToEnglish(number, true);
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+ }
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- StringBuilder result = new StringBuilder();
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+ // private static String convert(long number) {
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+ // if (number == 0) return "ZERO";
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+ //
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+ // StringBuilder result = new StringBuilder();
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+ //
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+ // if ((number / 1000) > 0) {
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+ // result.append(convert(number / 1000)).append(" THOUSAND ");
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+ // number %= 1000;
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+ // }
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+ //
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+ // if ((number / 100) > 0) {
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+ // result.append(convert(number / 100)).append(" HUNDRED ");
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+ // number %= 100;
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+ // }
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+ //
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+ // if (number > 0) {
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+ // if (number < 20) {
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+ // result.append(MagicValues.units[(int) number]).append(" ");
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+ // } else {
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+ // result.append(MagicValues.tens[(int) number / 10]).append(" ");
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+ // if (number % 10 > 0) {
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+ // result.append(MagicValues.units[(int) number % 10]).append(" ");
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+ // }
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+ // }
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+ // }
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+ // return result.toString();
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+ // }
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- if ((number / 1000) > 0) {
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- result.append(convert(number / 1000)).append(" THOUSAND ");
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- number %= 1000;
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+ private static String convert(int number) {
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+ if (number == 0) {
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+ return "Zero";
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}
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- if ((number / 100) > 0) {
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- result.append(convert(number / 100)).append(" HUNDRED ");
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- number %= 100;
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+ return convertToWords(number, false).trim();
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+ }
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+
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+ // 注意：此实现最多支持到十亿（Integer的最大值约为20亿，所以足够处理int范围的正数）。
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+ // 如果需要处理更大的数字（如Long类型），可以扩展代码添加更大的单位（Trillion等）
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+ private static String convertToWords(int number, Boolean pre) {
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+ if (number < 0) {
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+ return "Minus " + convertToWords(-number, pre);
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}
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- if (number > 0) {
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- if (number < 20) {
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- result.append(MagicValues.units[(int) number]).append(" ");
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- } else {
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- result.append(MagicValues.tens[(int) number / 10]).append(" ");
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- if (number % 10 > 0) {
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- result.append(MagicValues.units[(int) number % 10]).append(" ");
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- }
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- }
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+ if (number < 20) {
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+ return units[number];
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}
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- return result.toString();
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+
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+ if (number < 100) {
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+ String S = tens[number / 10] + ((number % 10 != 0) ? " " + units[number % 10] : "");
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+ return pre == true && !S.isEmpty() ? "And " + S : S;
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+ }
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+
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+ if (number < 1000) {
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+ return units[number / 100] + " Hundred" + ((number % 100 != 0) ? " " + convertToWords(number % 100, true) : "");
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+ }
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+
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+ if (number < 1000000) {
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+ return convertToWords(number / 1000, false) + " Thousand" + ((number % 1000 != 0) ? " " + convertToWords(number % 1000, false) : "");
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+ }
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+
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+ if (number < 1000000000) {
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+ return convertToWords(number / 1000000, false) + " Million" + ((number % 1000000 != 0) ? " " + convertToWords(number % 1000000, false) : "");
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+ }
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+
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+ return convertToWords(number / 1000000000, false) + " Billion" + ((number % 1000000000 != 0) ? " " + convertToWords(number % 1000000000, false) : "");
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}
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}
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liyuan