金额转换，阿拉伯数字的金额转换成中国传统的形式如：（￥1011）－>（一千零一拾一元整）输出。

短命女 2024-02-17 13:42 8阅读 0赞

程序代码如下：

package cn.itcast.framework.interview;
    
    import java.text.NumberFormat;
    import java.util.HashMap;
    
    //金额转换，阿拉伯数字的金额转换成中国传统的形式如：（￥1011）－>（一千零一拾一元整）输出。
    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);
    		chineseMoneyPattern.put("3", THREE);
    		chineseMoneyPattern.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 fractionPat = 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(fractionPat);
    			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(100100001.01)));
    	}
    	
    }

结果如下：

壹亿零壹拾万零壹元壹分