将阿拉伯数字转换成中文金额大写
前段时间在javaeye上看到一篇关于将数字转换成中文金额大写文章：将数字转换成中文金额大写形式（Java版），写得很不错，我也来写一个，我觉得这个算法比其更简单有效。闲话少说，大家看代码吧，代码很简单。
import java.util.Scanner;import java.util.regex.Matcher;import java.util.regex.Pattern;public class CurrencyConverter {private static final double MAXIMUM_NUMBER = 9999999999999.99d;private static final String CN_ZERO = "零";private static final String CN_SYMBOL = "￥:";private static final String CN_DOLLAR = "圆";private static final String CN_INTEGER = "整";private static final String[] digits = new String[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };private static final String[] radices = new String[] { "", "拾", "佰", "仟" };private static final String[] bigRadices = new String[] { "", "万", "亿", "万" };private static final String[] decimals = new String[] { "角", "分" };public static void main(String[] args) {// 键盘输入数字String currencyDigits = input();// 检查数字合法性if (check(currencyDigits)) {//转换大写并输出System.out.println(convert(currencyDigits));}}/** * 转换大写 * * @param currencyDigits * @return */public static String convert(String currencyDigits) {String integral = null; // 整数部分String decimal = null; // 小数部分String outputCharacters = null; // 最终转换输出结果String d = null;int zeroCount = 0, p = 0, quotient = 0, modulus = 0;// 删除数字中的逗号,currencyDigits = currencyDigits.replace("/,/g", "");// 删除数字左边的0currencyDigits = currencyDigits.replace("/^0+/", "");// 拆分数字中的整数与小数部分String[] parts = currencyDigits.split("\\.");if (parts.length > 1) {integral = parts[0];decimal = parts[1];// 如果小数部分长度大于2，四舍五入，保留两位小数if (decimal.length() > 2) {long dd = Math.round(Double.parseDouble("0."+decimal) * 100) ;decimal = Long.toString(dd);}} else {integral = parts[0];decimal = "0";}// Start processing:outputCharacters = "";// Process integral part if it is larger than 0:if (Double.parseDouble(integral) > 0) {zeroCount = 0;for (int i = 0; i < integral.length(); i++) {p = integral.length() - i - 1;d = integral.substring(i, i + 1);quotient = p / 4;modulus = p % 4;if (d.equals("0")) {zeroCount++;} else {if (zeroCount > 0) {outputCharacters += digits[0];}zeroCount = 0;outputCharacters += digits[Integer.parseInt(d)] + radices[modulus];}if (modulus == 0 && zeroCount < 4) {outputCharacters += bigRadices[quotient];}}outputCharacters += CN_DOLLAR;}// Process decimal part if it is larger than 0:if (Double.parseDouble(decimal) > 0) {for (int i = 0; i < decimal.length(); i++) {d = decimal.substring(i, i + 1);if (!d.equals("0")) {outputCharacters += digits[Integer.parseInt(d)] + decimals[i];} else {if (i == 0) {outputCharacters += CN_ZERO;}}}}// Confirm and return the final output string:if (outputCharacters.equals("")) {outputCharacters = CN_ZERO + CN_DOLLAR;}if (decimal == null || decimal.equals("0")) {outputCharacters += CN_INTEGER;}outputCharacters = CN_SYMBOL + outputCharacters;return outputCharacters;}/** * 从键盘输入要转换的数字 * * @return */private static String input() {System.out.println("请输入一个数字（精确到小数点后两位）：");Scanner scanner = new Scanner(System.in);String currencyDigits = scanner.next();scanner.close();return currencyDigits;}/** * 检查输入数字的合法性 * * @param currencyDigits * @return */private static boolean check(final String currencyDigits) {if (currencyDigits == null || currencyDigits.trim().equals("")) {System.out.println("没有输入要转换的数字");return false;}Pattern pattern = Pattern.compile("/[^,.\\d]/", Pattern.CASE_INSENSITIVE);Matcher matcher = pattern.matcher(currencyDigits);if (matcher.find()) {System.out.println("数字中含有非法字符!");return false;}pattern = Pattern.compile("/^((\\d{1,3}(,\\d{3})*(.((\\d{3},)*\\d{1,3}))?)|(\\d+(.\\d+)?))$/",Pattern.CASE_INSENSITIVE);matcher = pattern.matcher(currencyDigits);if (matcher.find()) {System.out.println("错误的数字格式!");return false;}if (Double.parseDouble(currencyDigits) > MAXIMUM_NUMBER) {System.out.println("超出转换最大范围!");return false;}return true;}} 1 楼 bardo 2011-04-17 建议看看这个代码