java实现人民币数字和大写转换

原文地址：http://liuyanzhao.com/2512.html
直接上代码了，下面代码经测试完美。能解决数字中加0的特例

    import java.math.BigDecimal;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.Scanner;
        public class RMB{
            public static void main(String[] args) throws Exception {
                Scanner sc = new Scanner(System.in);
                while(true){
                    System.out.print("请输入需要转换的数字：");
                    String i = sc.nextLine();
                    System.out.println(digitUppercase(i));
                }
            }
            /** 
             * 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 map = new HashMap();//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;iint 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;
            }
        }

原文地址：http://liuyanzhao.com/2512.html