阿拉伯数字转中文大写金额 人民币RMB

[java]代码库

import java.text.NumberFormat;
import java.util.HashMap;

/**
 * 阿拉伯数字转中文金额
 * 
 */
public class SimpleMoneyFormat {
	public static final String EMPTY = "";
	public static final String ZERO = "零";
	public static final String ONE = "壹";
	public static final String TWO = "贰";
	public static final String THREE = "叁";
	public static final String FOUR = "肆";
	public static final String FIVE = "伍";
	public static final String SIX = "陆";
	public static final String SEVEN = "柒";
	public static final String EIGHT = "捌";
	public static final String NINE = "玖";
	public static final String TEN = "拾";
	public static final String HUNDRED = "佰";
	public static final String THOUSAND = "仟";
	public static final String TEN_THOUSAND = "万";
	public static final String HUNDRED_MILLION = "亿";
	public static final String YUAN = "元";
	public static final String JIAO = "角";
	public static final String FEN = "分";
	public static final String DOT = ".";

	private static SimpleMoneyFormat formatter = null;
	private HashMap chineseNumberMap = new HashMap();
	private HashMap chineseMoneyPattern = new HashMap();
	private NumberFormat numberFormat = NumberFormat.getInstance();

	private SimpleMoneyFormat() {
		numberFormat.setMaximumFractionDigits(4);
		numberFormat.setMinimumFractionDigits(2);
		numberFormat.setGroupingUsed(false);

		chineseNumberMap.put("0", ZERO);
		chineseNumberMap.put("1", ONE);
		chineseNumberMap.put("2", TWO);
		chineseNumberMap.put("3", THREE);
		chineseNumberMap.put("4", FOUR);
		chineseNumberMap.put("5", FIVE);
		chineseNumberMap.put("6", SIX);
		chineseNumberMap.put("7", SEVEN);
		chineseNumberMap.put("8", EIGHT);
		chineseNumberMap.put("9", NINE);
		chineseNumberMap.put(DOT, DOT);

		chineseMoneyPattern.put("1", TEN);
		chineseMoneyPattern.put("2", HUNDRED);
		chineseMoneyPattern.put("3", THOUSAND);
		chineseMoneyPattern.put("4", TEN_THOUSAND);
		chineseMoneyPattern.put("5", TEN);
		chineseMoneyPattern.put("6", HUNDRED);
		chineseMoneyPattern.put("7", THOUSAND);
		chineseMoneyPattern.put("8", HUNDRED_MILLION);
	}

	public static SimpleMoneyFormat getInstance() {
		if (formatter == null)
			formatter = new SimpleMoneyFormat();
		return formatter;
	}

	public String format(String moneyStr) {
		checkPrecision(moneyStr);
		String result;
		result = convertToChineseNumber(moneyStr);
		result = addUnitsToChineseMoneyString(result);
		return result;
	}

	public String format(double moneyDouble) {
		return format(numberFormat.format(moneyDouble));
	}

	public String format(int moneyInt) {
		return format(numberFormat.format(moneyInt));
	}

	public String format(long moneyLong) {
		return format(numberFormat.format(moneyLong));
	}

	public String format(Number moneyNum) {
		return format(numberFormat.format(moneyNum));
	}

	private String convertToChineseNumber(String moneyStr) {
		String result;
		StringBuffer cMoneyStringBuffer = new StringBuffer();
		for (int i = 0; i < moneyStr.length(); i++) {
			cMoneyStringBuffer.append(chineseNumberMap.get(moneyStr.substring(
					i, i + 1)));
		}
		// 拾佰仟万亿等都是汉字里面才有的单位，加上它们
		int indexOfDot = cMoneyStringBuffer.indexOf(DOT);
		int moneyPatternCursor = 1;
		for (int i = indexOfDot - 1; i > 0; i--) {
			cMoneyStringBuffer.insert(i,
					chineseMoneyPattern.get(EMPTY + moneyPatternCursor));
			moneyPatternCursor = moneyPatternCursor == 8 ? 1
					: moneyPatternCursor + 1;
		}

		String fractionPart = cMoneyStringBuffer.substring(cMoneyStringBuffer
				.indexOf("."));
		cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("."),
				cMoneyStringBuffer.length());
		while (cMoneyStringBuffer.indexOf("零拾") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零拾"),
					cMoneyStringBuffer.indexOf("零拾") + 2, ZERO);
		}
		while (cMoneyStringBuffer.indexOf("零佰") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零佰"),
					cMoneyStringBuffer.indexOf("零佰") + 2, ZERO);
		}
		while (cMoneyStringBuffer.indexOf("零仟") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零仟"),
					cMoneyStringBuffer.indexOf("零仟") + 2, ZERO);
		}
		while (cMoneyStringBuffer.indexOf("零万") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零万"),
					cMoneyStringBuffer.indexOf("零万") + 2, TEN_THOUSAND);
		}
		while (cMoneyStringBuffer.indexOf("零亿") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零亿"),
					cMoneyStringBuffer.indexOf("零亿") + 2, HUNDRED_MILLION);
		}
		while (cMoneyStringBuffer.indexOf("零零") != -1) {
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零零"),
					cMoneyStringBuffer.indexOf("零零") + 2, ZERO);
		}
		if (cMoneyStringBuffer.lastIndexOf(ZERO) == cMoneyStringBuffer.length() - 1)
			cMoneyStringBuffer.delete(cMoneyStringBuffer.length() - 1,
					cMoneyStringBuffer.length());
		cMoneyStringBuffer.append(fractionPart);

		result = cMoneyStringBuffer.toString();
		return result;
	}

	private String addUnitsToChineseMoneyString(String moneyStr) {
		String result;
		StringBuffer cMoneyStringBuffer = new StringBuffer(moneyStr);
		int indexOfDot = cMoneyStringBuffer.indexOf(DOT);
		cMoneyStringBuffer.replace(indexOfDot, indexOfDot + 1, YUAN);
		cMoneyStringBuffer.insert(cMoneyStringBuffer.length() - 1, JIAO);
		cMoneyStringBuffer.insert(cMoneyStringBuffer.length(), FEN);
		if (cMoneyStringBuffer.indexOf("零角零分") != -1)// 没有零头，加整
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零角零分"),
					cMoneyStringBuffer.length(), "整");
		else if (cMoneyStringBuffer.indexOf("零分") != -1)// 没有零分，加整
			cMoneyStringBuffer.replace(cMoneyStringBuffer.indexOf("零分"),
					cMoneyStringBuffer.length(), "整");
		else {
			if (cMoneyStringBuffer.indexOf("零角") != -1)
				cMoneyStringBuffer.delete(cMoneyStringBuffer.indexOf("零角"),
						cMoneyStringBuffer.indexOf("零角") + 2);
			// tmpBuffer.append("整");
		}
		result = cMoneyStringBuffer.toString();
		return result;
	}

	private void checkPrecision(String moneyStr) {
		int fractionDigits = moneyStr.length() - moneyStr.indexOf(DOT) - 1;
		if (fractionDigits > 2)
			throw new RuntimeException("金额" + moneyStr + "的小数位多于两位。"); // 精度不能比分低
	}

	public static void main(String args[]) {
		System.out.println(getInstance().format(new Double(123456789.21)));
		// 输出：壹亿贰仟叁佰肆拾伍万陆仟柒佰捌拾玖元贰角壹分
		// 我要是有这么多钱就好了……
	}
}