java把金额转换成汉字大写金额

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以后加字符,不影响j对原字符串的相对位置  
	              //只是moneyStr.length()不断增长  
	              //insert(j,"string")就在j位置处插入,j=0时为第一位  
	   cpCursor = cpCursor == 8?1:cpCursor + 1;    //亿位以后从新循环  
	  }  
	    
	    
	  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,即有如下状况,此时根据习惯保留一个零便可  
	   ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);  
	  }  
	  while(ms.indexOf("亿万") != -1){  //特殊状况,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,没必要显示,通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,则跳过操做  
	    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,两个方法均可以实现这个功能 java

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("参数值超出容许范围 (-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”下面一级是否是 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)   // 若是“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) // 若是"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, 而且原金额为负数  
            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,若是是 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,记录上一位数字是否是 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])));  
        }  
  
    }  
  
}
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