java-金额转成大写

素颜马尾好姑娘i 2022-06-13 00:55 184阅读 0赞

**在处理数字的时候很经常遇见的问题，将数字金额转为大写汉字。百度到的很多程序都是直接对double类型的数字进行处理。但是，这么做的话，很容易会损失精度，导致转换错误。为了保障精度，将double类型转换为BigDecimal进行处理。**

import java.math.BigDecimal;
    import java.util.HashMap;
    import java.util.Map;
    
    public class Main { 
    
        public static void main(String[] args) {
            try{
                System.out.println(digitUppercase(Double.toString(1111.11)));
                System.out.println(digitUppercase(Double.toString(2222.22)));
                System.out.println(digitUppercase(Double.toString(3333.33)));
                System.out.println(digitUppercase(Double.toString(5555.55)));
                System.out.println(digitUppercase(Double.toString(8888.88)));
                System.out.println(digitUppercase(Double.toString(9999.99)));
                System.out.println(digitUppercase(Double.toString(1234567.89)));
                System.out.println(digitUppercase(Double.toString(100)));
            } catch (Exception e) {
                e.printStackTrace();
            }
    
        }
    
    
        /** * 处理的最大数字达千万亿位 精确到分 * @return */
        public static String digitUppercase(String num) throws Exception{
            String fraction[] = {
       "角", "分"};
            String digit[] = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
    
            String unit1[] = {
       "", "拾", "佰", "仟"};//把钱数分成段,每四个一段,实际上得到的是一个二维数组
            String unit2[] = {
       "元", "万", "亿","万亿"}; //把钱数分成段,每四个一段,实际上得到的是一个二维数组
            BigDecimal bigDecimal =  new BigDecimal(num);
            bigDecimal=bigDecimal.multiply(new BigDecimal(100));
    // Double bigDecimal = new Double(name*100); 存在精度问题 eg：145296.8
            String strVal = String.valueOf(bigDecimal.toBigInteger());
            String head = strVal.substring(0,strVal.length()-2);         //整数部分
            String end = strVal.substring(strVal.length()-2);              //小数部分
            String endMoney="";
            String headMoney = "";
            if("00".equals(end)){
                endMoney = "整";
            }else{
                if(!end.substring(0,1).equals("0")){
                    endMoney+=digit[Integer.valueOf(end.substring(0,1))]+"角";
                }else if(end.substring(0,1).equals("0") && !end.substring(1,2).equals("0")){
                    endMoney+= "零";
                }
                if(!end.substring(1,2).equals("0")){
                    endMoney+=digit[Integer.valueOf(end.substring(1,2))]+"分";
                }
            }
            char[] chars = head.toCharArray();
            Map<String,Boolean> map = new HashMap<String,Boolean>();//段位置是否已出现zero
            boolean zeroKeepFlag = false;//0连续出现标志
            int vidxtemp = 0;
            for(int i=0;i<chars.length;i++){
                int idx = (chars.length-1-i)%4;//段内位置 unit1
                int vidx = (chars.length-1-i)/4;//段位置 unit2
                String s = digit[Integer.valueOf(String.valueOf(chars[i]))];
                if(!"零".equals(s)){
                    headMoney += s +unit1[idx]+unit2[vidx];
                    zeroKeepFlag = false;
                }else if(i==chars.length-1 || map.get("zero"+vidx)!=null){
                    headMoney += "" ;
                }else{
                    headMoney += s;
                    zeroKeepFlag = true;
                    map.put("zero"+vidx,true);//该段位已经出现0；
                }
                if(vidxtemp!=vidx || i==chars.length-1){
                    headMoney = headMoney.replaceAll(unit2[vidx],"");
                    headMoney+=unit2[vidx];
                }
                if(zeroKeepFlag && (chars.length-1-i)%4==0){
                    headMoney = headMoney.replaceAll("零","");
                }
            }
            return headMoney+endMoney;
        }
    
    
    }

操作结果：

壹仟壹佰壹拾壹元壹角壹分  
贰仟贰佰贰拾贰元贰角贰分  
叁仟叁佰叁拾叁元叁角叁分  
伍仟伍佰伍拾伍元伍角伍分  
捌仟捌佰捌拾捌元捌角捌分  
玖仟玖佰玖拾玖元玖角玖分  
壹佰贰拾叁万肆仟伍佰陆拾柒元捌角玖分  
壹佰元整

转载自：[java版 金额转大写][java_]

[java_]: http://605113068.iteye.com/blog/2049163