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java 转换数字为人民币大写

2012-03-31 14:26 507 查看
java 转换数字为人民币大写
import java.text.DecimalFormat;

public class MoneyUtil {

/*

* 将小写的人民币转化成大写

*/

public static String convertToChineseNumber(double number)

{

StringBuffer chineseNumber = new StringBuffer();

String [] num={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};

String [] unit = {"分","角","圆","拾","佰","仟","万","拾","佰","仟","亿","拾","佰","仟","万"};

String tempNumber = String.valueOf(Math.round((number * 100)));

int tempNumberLength = tempNumber.length();

if ("0".equals(tempNumber))

{

return "零圆整";

}

if (tempNumberLength > 15)

{

try {

throw new Exception("超出转化范围.");

} catch (Exception e) {

e.printStackTrace();

}

}

boolean preReadZero = true; //前面的字符是否读零

for (int i=tempNumberLength; i>0; i--)

{

if ((tempNumberLength - i + 2) % 4 == 0)

{

//如果在（圆，万，亿，万）位上的四个数都为零,如果标志为未读零，则只读零，如果标志为已读零，则略过这四位

if (i - 4 >= 0 && "0000".equals(tempNumber.substring(i - 4, i)))

{

if (!preReadZero)

{

chineseNumber.insert(0, "零");

preReadZero = true;

}

i -= 3; //下面还有一个i--

continue;

}

//如果当前位在（圆，万，亿，万）位上，则设置标志为已读零（即重置读零标志）

preReadZero = true;

}

Integer digit = Integer.parseInt(tempNumber.substring(i - 1, i));

if (digit == 0)

{

//如果当前位是零并且标志为未读零，则读零，并设置标志为已读零

if (!preReadZero)

{

chineseNumber.insert(0, "零");

preReadZero = true;

}

//如果当前位是零并且在（圆，万，亿，万）位上，则读出（圆，万，亿，万）

if ((tempNumberLength - i + 2) % 4 == 0)

{

chineseNumber.insert(0, unit[tempNumberLength - i]);

}

}

//如果当前位不为零，则读出此位，并且设置标志为未读零

else

{

chineseNumber.insert(0, num[digit] + unit[tempNumberLength - i]);

preReadZero = false;

}

}

//如果分角两位上的值都为零，则添加一个“整”字

if (tempNumberLength - 2 >= 0 && "00".equals(tempNumber.substring(tempNumberLength - 2, tempNumberLength)))

{

chineseNumber.append("整");

}

return chineseNumber.toString();

}

public static String number2BigRMB(double sum) {

String[] numeral ={"十", "百", "千"};

String[] bigNumeral = {"亿", "万"};

String[] measure = {"元", "角", "分"};

String[] numbers ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};

StringBuffer result = new StringBuffer();

int digit = 0;

for (double temp = sum; temp >= 1; temp /= 10) {

digit++;

}

int loop = 0;

for (int temp = digit - 4; temp > 0; temp -= 4) {

loop++;

}

int srcLoop = loop;

boolean acrossLoopZeroFlag = true;

while (loop >= 0) {

int doubleBigNumber1 = (int) (sum / Math.pow(10000, loop));

sum %= Math.pow(10000, loop);

int bigDigit = 0;

for (double temp = doubleBigNumber1; temp >= 1; temp /= 10) {

bigDigit++;

}

if (bigDigit < 4 && srcLoop != loop && acrossLoopZeroFlag) {

result.append(numbers[0]);

acrossLoopZeroFlag = false;

} else {

acrossLoopZeroFlag = true;

}

boolean flag = true;

if (loop > 0) {

flag = false;

}

boolean innerFlag = true;

if (doubleBigNumber1 == 0) {

innerFlag = false;

}

boolean addZeroFlag = false;

int i = (int) Math.pow(10, bigDigit - 1);

for (; i >= 1; i = i / 10, bigDigit--) {

int doubleNumber = doubleBigNumber1 / i;

if (doubleNumber > 0) {

if (addZeroFlag) {

result.append(numbers[0]);

addZeroFlag = false;

}

result.append(numbers[doubleNumber]);

if (bigDigit == 1) {

if (flag) {

result.append(measure[0]);

} else {

result.append(bigNumeral[loop % 2]);

}

} else {

result.append(numeral[bigDigit - 2]);

}

} else if (bigDigit == 1) {

if (flag) {

result.append(measure[0]);

} else {

if (innerFlag) {

result.append(bigNumeral[loop % 2]);

}

}

} else {

addZeroFlag = true;

}

doubleBigNumber1 %= i;

}

loop--;

}

DecimalFormat df = new DecimalFormat("#.##");

String floatStr = df.format(sum);

floatStr = floatStr.substring(floatStr.indexOf(".") + 1);

int floatPart = Integer.parseInt(floatStr);

int jiao = floatPart / 10;

int fen = floatPart % 10;

if (jiao > 0) {

result.append(numbers[jiao]);

result.append(measure[1]);

}

if (fen > 0) {

result.append(numbers[fen]);

result.append(measure[2]);

}

return result.toString();

}

}

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