ActionScript 数目字转换大写金额

import mx.formatters.NumberFormatter;
 
 public class RMBBigTransForm
 {
  private static var NUM:String = "零壹贰叁肆伍陆柒捌玖"; 
  private static var UNIT:String = "仟佰拾个"; 
  private static var GRADEUNIT:String = "仟万亿兆"; 
  private static var DOTUNIT:String = "角分厘"; 
  private static var GRADE:int = 4; 
  private static var SIGN:String = "￥"; 
  private static var nf:NumberFormatter= new NumberFormatter(); 
  
  public static function toBigAmts(amount:Number):String
  { 
   return toBigAmt(amount); 
  } 
  
  public static function toBigAmt(amount:Number):String
  {
   var amt:String = nf.format(amount); 
   var d:Number = new Number(amount); 
   var dotPart:String = ""; //取小数位 
   var intPart:String = ""; //取整数位 
   var dotPos:int;
   
   if((dotPos = amt.indexOf('.')) != -1) 
   { 
    intPart = amt.substring(0, dotPos); 
    dotPart = amt.substring(dotPos + 1); 
   }
   else 
   { 
    //jqk 2011-08-03 修改
    //intPart = amt;
    intPart = d.toString(); 
   }   
   if(intPart.length > 16)
   {
    //Alert.show("The amount is too big.");
    return "";
   }  
   var intBig:String = intToBig(intPart); 
   var dotBig:String = dotToBig(dotPart);
   //以下代码稍做修改，现在是完美的代码啦！ 
   if ((dotBig.length == 0)&&(intBig.length != 0)) 
   { 
    return intBig + "元整"; 
   }
   else if((dotBig.length == 0)&&(intBig.length == 0))
   { 
    return intBig + "零元";
   }
   else if((dotBig.length != 0)&&(intBig.length != 0)) 
   { 
    return intBig + "元" + dotBig; 
   }
   else
   { 
    return dotBig;   
   }
  }
  
  private static function dotToBig( dotPart:String):String
  { 
   //得到转换后的大写（小数部分） 
   var strRet:String = ""; 
   for(var i:int=0; i<dotPart.length && i<3; i++)
   { 
    var num:int; 
    if((num =int(dotPart.substring(i,i+1))) != 0) 
     strRet += NUM.substring(num,num+1) + DOTUNIT.substring(i,i+1); 
   } 
   return strRet; 
  } 
  
  private static function intToBig(intPart:String):String
  { 
   //得到转换后的大写（整数部分） 
   var grade:int; //级长 
   var result:String = ""; 
   var strTmp:String = ""; 
   
   //得到当级长 
   grade = intPart.length / GRADE; 
   //调整级次长度 
   if(intPart.length % GRADE != 0) grade += 1; 
   
   //对每级数字处理 
   for(var i:int = grade; i >= 1; i--)
   { 
    strTmp = getNowGradeVal(intPart, i);//取得当前级次数字 
    result += getSubUnit(strTmp);//转换大写 
    result = dropZero(result);//除零 
    //加级次单位 
    if( i>1 ) //末位不加单位 
     //单位不能相连续 
     if(getSubUnit(strTmp)=="零零零零")
     { 
      //jqk 2011-08-03 删除
      //result += "零"+GRADEUNIT.substring(i - 1, i); 
     }
     else
     { 
      result += GRADEUNIT.substring(i - 1, i); 
     } 
   } 
   return result; 
  }
  private static function getNowGradeVal( strVal:String,grade:int):String
  { 
   //得到当前级次的串 
   var rst:String=""; 
   if(strVal.length <= grade * GRADE) 
    rst = strVal.substring(0,strVal.length - (grade-1)*GRADE); 
   else 
    rst = strVal.substring(strVal.length - grade*GRADE,strVal.length - (grade-1)*GRADE); 
   return rst; 
  }  
  private static function getSubUnit(strVal:String):String
  { 
   //数值转换 
   var rst:String = ""; 
   
   for(var i:int = 0;i< strVal.length; i++){ 
    var s:String = strVal.substring(i,i+1); 
    var num:int =new int(s); //Integer.parseInt(); 
    if(num == 0)
    { 
     //“零”作特殊处理 
     if(i != strVal.length) //转换后数末位不能为零 
      rst += "零"; 
    }
    else
    { 
     //If IntKey = 1 And i = 2 Then 
     //“壹拾”作特殊处理 
     //“壹拾”合理 
     //Else 
     rst += NUM.substring(num,num+1); 
     //End If 
     //追加单位 
     if(i != strVal.length-1 )//个位不加单位 
      rst += UNIT.substring(i+4-strVal.length,i+4-strVal.length+1); 
    } 
   } 
   return rst; 
  } 
  private static function dropZero(strVal:String):String
  { 
   //去除连继的“零” 
   var strRst:String; 
   var strBefore:String; //前一位置字符 
   var strNow:String;    //现在位置字符 
   
   strBefore = strVal.substring(0,1); 
   strRst = strBefore; 
   
   for(var i:int= 1; i<strVal.length; i++) 
   { 
    strNow = strVal.substring(i, i+1); 
    if(strNow=="零" && strBefore=="零")
    {
     //同时为零
    }
    else 
     strRst += strNow; 
    strBefore = strNow; 
   } 
   
   //末位去零 
   if(strRst.substring(strRst.length-1, strRst.length)=="零") 
    strRst = strRst.substring(0,strRst.length-1); 
   return strRst; 
  } 

 }

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以上代码为网上摘录，原文有错误，我修改部分代码，现在可以正确使用