数字转换成大写

 * @author tongdong

 * @Description :数字转换成大写

 */

public class ChineseUpperCaser{

/**

* 用于存储整数部分

*/

private String integerPart;

/**

* 用于存储小数部分

*/

private String floatPart;

/**

* 用于存储0-9大写的哈希表

*/

private static final Map<String,String> ZerotoNineHt;

/**

* 用于存储十百千大写的哈希表

*/

private static final Map<Integer,String> thHuTenHt;

/**

* 用于存储万亿兆大写的哈希表

*/

private static final Map<Integer,String> wanYiZhaoHt;

static{

ZerotoNineHt=new Hashtable<String,String>();

ZerotoNineHt.put("0", "零");

ZerotoNineHt.put("1", "壹");

ZerotoNineHt.put("2", "贰");

ZerotoNineHt.put("3", "叁");

ZerotoNineHt.put("4", "肆");

ZerotoNineHt.put("5", "伍");

ZerotoNineHt.put("6", "陆");

ZerotoNineHt.put("7", "柒");

ZerotoNineHt.put("8", "捌");

ZerotoNineHt.put("9", "玖");

thHuTenHt=new Hashtable<Integer,String>();

thHuTenHt.put(0, "");

thHuTenHt.put(1, "拾");

thHuTenHt.put(2, "佰");

thHuTenHt.put(3, "仟");

wanYiZhaoHt=new Hashtable<Integer,String>();

wanYiZhaoHt.put(0, "");

wanYiZhaoHt.put(1, "万");

wanYiZhaoHt.put(2, "亿");

wanYiZhaoHt.put(3, "兆");

}

private static String getWanYiZhao(int level){

String retval="";

do{

retval+=wanYiZhaoHt.get(level % 4);

level-=3;

}while(level>3);

return retval;

}

/**

* 构造函数

* @param number

* @throws NumberFormatException

*/

public ChineseUpperCaser(float number) throws NumberFormatException{

this(String.valueOf(number));

}

/**

* 构造函数

* @param number

* @throws NumberFormatException

*/

public ChineseUpperCaser(double number) throws NumberFormatException{

this(String.valueOf(number));

}

/**

* 构造函数

* @param number

* @throws NumberFormatException

*/

public ChineseUpperCaser(int number) throws NumberFormatException{

this(String.valueOf(number));

}

/**

* 构造函数

* @param number

* @throws NumberFormatException

*/

public ChineseUpperCaser(long number) throws NumberFormatException{

this(String.valueOf(number));

}

/**

* 构造函数

* @param number

* @throws NumberFormatException

*/

public ChineseUpperCaser(String number) throws NumberFormatException{

String formalNumber=formatNumber(number);

// 辟分以给整数部分和小数部分赋值

String[] arr=formalNumber.split("[.]");

if(arr.length==2){

// 有小数点

integerPart=arr[0];

floatPart=arr[1];

}

else{

// 无小数点

integerPart=arr[0];

}

}

public String toString(){

String retval="";

if(integerPart!=null){

retval+=parseIntegerPart();

}

if(floatPart!=null){

retval+=parseFloatPart();

}

else{

retval+="整";

}

return retval;

}

/**

* 得到整数部分的汉字大写表示

* @return

*/

private String parseIntegerPart(){

String retval="";

// 将整数部分逆序，因为需要反向读取

String reverseIntegerPart="";

for(int i=integerPart.length()-1;i>-1;i--){

reverseIntegerPart+=integerPart.charAt(i);

}

// 将整数部分按四位分段

Pattern p = Pattern.compile("\\d{4}",Pattern.CASE_INSENSITIVE);

Matcher m = p.matcher(reverseIntegerPart);

StringBuffer sb = new StringBuffer();

boolean result = m.find();

while (result) {

// 每找到四位放一个逗号

m.appendReplacement(sb, m.group(0) + ",");

result = m.find();

}

m.appendTail(sb);

// 按逗号劈分，得到四位分组数据的数组

String[] arr=sb.toString().split(",");

int j;

String str;

for(int i=arr.length-1;i>=0;i--){

String temp=arr[i];

// 阿拉伯数字转大写汉字加单位（千百十）

for(j=temp.length()-1;j>=0;j--){

str=String.valueOf(temp.charAt(j));

retval+=ZerotoNineHt.get(str)+thHuTenHt.get(j);

}

retval=retval.replaceAll("(零)($)", "$2");// 零在末尾则去掉

// 加单位（兆亿万）

retval+=getWanYiZhao(i);

}

// 零替换

retval=retval.replaceAll("(零[仟佰拾])", "零");

retval=retval.replaceAll("(零{2,})", "零");

retval=retval.replaceAll("(零)($)", "$2");// 零在末尾则去掉

return retval;

}

/**

* 得到小数部分的汉字大写表示

* @return

*/

private String parseFloatPart(){

String retval="点";

for(int i=0;i<floatPart.length();i++){

String temp=String.valueOf(floatPart.charAt(i));

retval+=ZerotoNineHt.get(temp);

}

return retval;

}

/**

* 对输入的字符串进行验证，如果不能转化为数字形式则抛出数字转化异常

* ，注意这是一个运行时异常(非检查型异常)，程序不用显式捕获

* @param number

* @throws NumberFormatException

*/

private String formatNumber(String number) throws NumberFormatException{

return (new BigDecimal(number)).toString();

}

public static void main(String[] args){

String[] arr={"1.543524304302432","12.432423432","123.454235","1234","12345","123456","1234567",

"12345678","123456789","1234567891","12345678912","123456789123","1234567891234","12345678912345",

"123456789123456","1234567891234567","12345678912345678","123456789123456789",

"123456789123456789123456089123456789123456789123450780","0","00","000","0000","01","001","0001",

"00001","10","100","1000","10000","101","1001","10001","100001","1.23","21.234","243400031.233234",

"5400035.980","543.6545"};

//String[] arr={"0","00","000","0000","01","001","0001","00001","10","100","1000","10000","101","1001","10001","100001"};

//String[] arr={"1.23","21.234","243400031.233234","5400035.980","543.6545"};

for(String str:arr){

System.out.println("阿拉伯数字等于："+str+" 大写汉字等于："+new ChineseUpperCaser(str));

}

}

}