浮点数转换为金额大写

 网上转账时，易发现大部分银行的网银系统都提供了类似这样的功能，即：当用户在输入转账金额数字时，下面会有个显示框用于同步显示该金额对应的大写形式，如输入：“6109.23”，则对应显示的金额大写为：“陆仟壹佰零玖元贰角叁分”。下面就贴上实现此转换功能的简单java代码，注意：该程序只支持到“万亿”级。

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/** 
 * CrazyItTest 
 * 将金额转换成人民币大写形式 
 *  
 */  
package com.labci.java.array;  
/** 
 * @author Bill Tu(tujiyue/iwtxokhtd) 
 * May 15, 2011[7:41:57 PM] 
 * 
 */  
public class ConvertFloatNumToRMBFormat {  
    private String [] upperCaseArray={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};  
    private String [] moneyUnitArray={"元","拾","佰","仟","万","拾","佰","仟","亿","拾","佰","仟","万"};  
    private String [] decimalArray={"角","分"};  
      
    private String []getDividedStringNum(double num){  
        long integerData=(long)num;  
        long decialData=Math.round((num-integerData)*100);  
        String decialString=String.valueOf(decialData);  
        if(decialData<10){  
            decialString="0"+decialData;  
        }  
        return new String[]{String.valueOf(integerData),decialString};  
    }  
      
    private String getIntegerStr(String integerStr){  
        String result="";  
          
        int numLength=integerStr.length();  
        if(numLength>13){  
            System.out.println("超出本程序的金额范围");  
        }else{  
            for(int i=0;i<numLength;i++){  
                int num=integerStr.charAt(i)-48;  
                if(num!=0){  
                    result+=upperCaseArray[num]+moneyUnitArray[numLength-i-1];  
                }else{  
                    result+=upperCaseArray[num];  
                }  
            }  
        }  
          
        return result;  
    }  
      
    private String getDecimalStr(String decimalStr){  
        String result="";  
        if(null!=decimalStr&& !"".equals(decimalStr)){  
            int allNum=Integer.parseInt(decimalStr);  
            if(allNum>0){  
                int numLength=decimalStr.length();  
                  
                for(int i=0;i<numLength;i++){  
                    int num=decimalStr.charAt(i)-48;  
                    if(num!=0){  
                        result+=upperCaseArray[num]+decimalArray[i];  
                    }else{  
                        if(i<1){  
                            result+=upperCaseArray[num];  
                        }  
                    }  
                }  
            }  
        }  
        return result;  
    }  
      
    private String getConvertedString(double moneyData){  
        String []getDividedStringNumArray=getDividedStringNum(moneyData);  
        String integerStr=getDividedStringNumArray[0];  
        String result=getIntegerStr(integerStr);  
        if(null!=result && !"".equals(result)){  
            if(getDividedStringNumArray.length>1){  
                String decimalStr=getDividedStringNumArray[1];  
                result+=getDecimalStr(decimalStr);  
            }  
        }  
        return result;  
    }  
      
    /** 
     * @param args 
     */  
    public static void main(String[] args) {  
        ConvertFloatNumToRMBFormat nr=new ConvertFloatNumToRMBFormat();  
        double moneyData=132210216109.11;  
        System.out.println(nr.getConvertedString(moneyData));  
    }  
}  

运行结果：

壹仟叁佰贰拾贰亿壹仟零贰拾壹万陆仟壹佰零玖元壹角壹分