把金额转换成汉字大写金额的Java代码

class MoneyFormat{      private final String [] pattern ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};      private final String [] cPattern ={"","拾","佰","仟","万","拾","佰","仟","亿"};      private final String [] cfPattern = {"","角","分"};      private final String ZEOR = "零";      public MoneyFormat(){          System.out.println("run...");             }             public String format(String moneyString){       int dotPoint = moneyString.indexOf("."); //判断是否为小数       String moneyStr;             if(dotPoint != -1){        moneyStr = moneyString.substring(0,moneyString.indexOf("."));       }       else{        moneyStr = moneyString;       }       StringBuffer fraction = null;   //小数部分的处理,以及最后的yuan.       StringBuffer ms = new StringBuffer();        for(int i = 0;i < moneyStr.length();i++){        ms.append(pattern[moneyStr.charAt(i) - 48]); //按数组的编号加入对应大写汉字       }              int cpCursor = 1;       for(int j = moneyStr.length() - 1;j > 0;j--){        ms.insert(j,cPattern[cpCursor]);   //在j之后加字符,不影响j对原字符串的相对位置                   //只是moneyStr.length()不断增加                   //insert(j,"string")就在j位置处插入,j=0时为第一位        cpCursor = cpCursor == 8?1:cpCursor + 1;    //亿位之后重新循环       }                     while(ms.indexOf("零拾") != -1){  //当十位为零时用一个"零"代替"零拾"                 //replace的起始于终止位置        ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);       }       while(ms.indexOf("零佰") != -1){  //当百位为零时,同理        ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);       }       while(ms.indexOf("零仟") != -1){  //同理        ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);       }       while(ms.indexOf("零万") != -1){  //万需保留，中文习惯        ms.replace(ms.indexOf("零万"),ms.indexOf("零万") + 2,"万");       }       while(ms.indexOf("零亿") != -1){  //同上        ms.replace(ms.indexOf("零亿"),ms.indexOf("零亿") + 2,"亿");       }       while(ms.indexOf("零零") != -1){//有连续数位出现零，即有以下情况，此时根据习惯保留一个零即可        ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);       }       while(ms.indexOf("亿万") != -1){  //特殊情况，如:100000000,根据习惯保留高位        ms.replace(ms.indexOf("亿万"),ms.indexOf("亿万") + 2,"亿");       }       while(ms.lastIndexOf("零") == ms.length()-1){  //当结尾为零j，不必显示,经过处理也只可能出现一个零        if(ms.indexOf("零") == -1){       ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);        }else{       break;      }     }                     int end;       if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小数的进入         String fs = moneyString.substring(dotPoint + 1,moneyString.length());        if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前两位小数全为零，则跳过操作         end = fs.length() > 2?2:fs.length();  //仅保留两位小数         fraction = new StringBuffer(fs.substring(0,end));         for(int j = 0;j < fraction.length();j++){          fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替换大写汉字         }         for(int i = fraction.length();i > 0;i--){  //插入中文标识          fraction.insert(i,cfPattern[i]);         }         fraction.insert(0,"元");      //为整数部分添加标识        }        else{         fraction = new StringBuffer("元整");         }               }       else{        fraction = new StringBuffer("元整");       }               ms.append(fraction);         //加入小数部分       return ms.toString();      }                              public static void main(String [] ar){       System.out.println(new MoneyFormat().format("10005022.123009"));       System.out.println(new MoneyFormat().format("0.12"));      }     }   

上面是第一种方法,简单些,容易理解,下面这种复杂点,两个方法都可以实现这个功能

public class MoneyUtil {             public static String[] chineseDigits = new String[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};            /**        * 把金额转换为汉字表示的数量，小数点后四舍五入保留两位        * @param amount        * @return        */        public static String amountToChinese(double amount) {                if(amount > 99999999999999.99 || amount < -99999999999999.99)                throw new IllegalArgumentException("参数值超出允许范围 (-99999999999999.99 ～ 99999999999999.99)！");                boolean negative = false;            if(amount < 0) {                negative = true;                amount = amount * (-1);            }                long temp = Math.round(amount * 100);            int numFen = (int)(temp % 10); // 分            temp = temp / 10;            int numJiao = (int)(temp % 10); //角            temp = temp / 10;            //temp 目前是金额的整数部分                int[] parts = new int[20]; // 其中的元素是把原来金额整数部分分割为值在 0~9999 之间的数的各个部分            int numParts = 0; // 记录把原来金额整数部分分割为了几个部分（每部分都在 0~9999 之间）            for(int i=0; ; i++) {                if(temp ==0)                    break;                int part = (int)(temp % 10000);                parts[i] = part;                numParts ++;                temp = temp / 10000;            }                boolean beforeWanIsZero = true; // 标志“万”下面一级是不是 0                String chineseStr = "";            for(int i=0; i<numParts; i++) {                    String partChinese = partTranslate(parts[i]);                if(i % 2 == 0) {                    if("".equals(partChinese))                        beforeWanIsZero = true;                    else                        beforeWanIsZero = false;                }                    if(i != 0) {                    if(i % 2 == 0)                        chineseStr = "亿" + chineseStr;                    else {                        if("".equals(partChinese) && !beforeWanIsZero)   // 如果“万”对应的 part 为 0，而“万”下面一级不为 0，则不加“万”，而加“零”                            chineseStr = "零" + chineseStr;                        else {                            if(parts[i-1] < 1000 && parts[i-1] > 0) // 如果"万"的部分不为 0, 而"万"前面的部分小于 1000 大于 0， 则万后面应该跟“零”                                chineseStr = "零" + chineseStr;                            chineseStr = "万" + chineseStr;                        }                    }                }                chineseStr = partChinese + chineseStr;            }                if("".equals(chineseStr))  // 整数部分为 0, 则表达为"零元"                chineseStr = chineseDigits[0];            else if(negative) // 整数部分不为 0, 并且原金额为负数                chineseStr = "负" + chineseStr;                chineseStr = chineseStr + "元";                if(numFen == 0 && numJiao == 0) {                chineseStr = chineseStr + "整";            }            else if(numFen == 0) { // 0 分，角数不为 0                chineseStr = chineseStr + chineseDigits[numJiao] + "角";            }            else { // “分”数不为 0                if(numJiao == 0)                    chineseStr = chineseStr + "零" + chineseDigits[numFen] + "分";                else                    chineseStr = chineseStr + chineseDigits[numJiao] + "角" + chineseDigits[numFen] + "分";            }                return chineseStr;            }                /**        * 把一个 0~9999 之间的整数转换为汉字的字符串，如果是 0 则返回 ""        * @param amountPart        * @return        */        private static String partTranslate(int amountPart) {                if(amountPart < 0 || amountPart > 10000) {                throw new IllegalArgumentException("参数必须是大于等于 0，小于 10000 的整数！");            }                    String[] units = new String[] {"", "拾", "佰", "仟"};                int temp = amountPart;                String amountStr = new Integer(amountPart).toString();            int amountStrLength = amountStr.length();            boolean lastIsZero = true; //在从低位往高位循环时，记录上一位数字是不是 0            String chineseStr = "";                for(int i=0; i<amountStrLength; i++) {                if(temp == 0)  // 高位已无数据                    break;                int digit = temp % 10;                if(digit == 0) { // 取到的数字为 0                    if(!lastIsZero)  //前一个数字不是 0，则在当前汉字串前加“零”字;                        chineseStr = "零" + chineseStr;                    lastIsZero = true;                }                else { // 取到的数字不是 0                    chineseStr = chineseDigits[digit] + units[i] + chineseStr;                    lastIsZero = false;                }                temp = temp / 10;            }            return chineseStr;        }                     public static void main(String[] args) {                if(args.length == 0) {                System.out.println("转换演示：");                System.out.println("-------------------------");                System.out.println("0000000000000000001.01: " + amountToChinese(0000000000000000001.01));                System.out.println("45689263.626: " + amountToChinese(45689263.626));                System.out.println("0.69457: " + amountToChinese(0.69457));                System.out.println("253.0: " + amountToChinese(253.0));                System.out.println("0: " + amountToChinese(0));                System.out.println("-------------------------");                    System.out.println("999: " + amountToChinese(999));                                //System.out.println(Long.MAX_VALUE);                //System.out.println(Long.MIN_VALUE);            }            else {                System.out.println("转换结果：");                System.out.println(args[0] + ": " + amountToChinese(Double.parseDouble(args[0])));            }            }        }