java实现中文数字与阿拉伯数字互相转换

最近在作东西的时候,需要使用中文数字与阿拉伯数字进行互相转换.在网搜了一下效果并不是十分理想.没有办法只好自己动手.

现在拿出来与大家分享,并不断完善.

需要注意的一些地方:

1.目前最大上限是以亿为单位.

2.没有实现中文大写钱数的互换.

3.实用的是int型数字,这样上限大概是以十亿为单位.

4.有些中文的数字习惯没有处理(“4亿”=“4万万”,“一十一”=“十一”，“零”＝“0”等等)

Java代码如下

/**

*

*

*

*@author<ahref="[e-mail]">yangzhenyu</a>

*

*@version$Revision$

*

*@since2010-8-26

*/

publicclassNumberUtils {

/*

*基本数字单位;

*/

privatestaticfinalString[]units=

{"千","百","十",""};//个位

/*

*大数字单位;

*/

privatestaticfinalString[]bigUnits=

{"万","亿"};

/*

*中文数字;

*/

privatestaticfinalchar[]numChars=

{'一','二','三','四','五','六','七','八','九'};

//private static final char[] numMouneyChars =

//{ '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖' };

privatestaticcharnumZero='零';

/**

*将中文数字转换为阿拉伯数字;

*

*@paramnumberCN

*@return

*/

publicstaticintnumberCN2Arab(String numberCN) {

String tempNumberCN = numberCN;

//异常数据处理;

if(tempNumberCN ==null) {

return0;

}

/*

*nums[0]保存以千单位;nums[1]保存以万单位;nums[2]保存以亿单位;

*/

String[] nums =newString[bigUnits.length+ 1];

//千位以内,直接处理;

nums[0] = tempNumberCN;

/*

*分割大数字,以千为单位进行运算;

*/

for(inti = (bigUnits.length- 1); i >= 0; i--) {

//是否存在大单位(万,亿...);

intfind = tempNumberCN.indexOf(bigUnits[i]);

if(find != -1) {

String[] tempStrs = tempNumberCN.split(bigUnits[i]);

//清空千位内容;

if(nums[0] !=null) {

nums[0] =null;

}

if(tempStrs[0] !=null) {

nums[i + 1] = tempStrs[0];

}

if(tempStrs.length> 1) {

tempNumberCN = tempStrs[1];

if(i == 0) {

nums[0] = tempStrs[1];

}

}else{

tempNumberCN =null;

break;

}

}

}

String tempResultNum ="";

for(inti = nums.length- 1; i >= 0; i--) {

if(nums[i] !=null) {

tempResultNum +=numberKCN2Arab(nums[i]);

}else{

tempResultNum +="0000";

}

}

returnInteger.parseInt(tempResultNum);

}

/**

*将一位中文数字转换为一位数字;eg:一返回1;

*

*@paramonlyCNNumber

*@return

*/

publicstaticintnumberCharCN2Arab(charonlyCNNumber) {

if(numChars[0] == onlyCNNumber) {

return1;

}elseif(numChars[1] == onlyCNNumber || onlyCNNumber =='两') {//处理中文习惯用法(二,两)

return2;

}elseif(numChars[2] == onlyCNNumber) {

return3;

}elseif(numChars[3] == onlyCNNumber) {

return4;

}elseif(numChars[4] == onlyCNNumber) {

return5;

}elseif(numChars[5] == onlyCNNumber) {

return6;

}elseif(numChars[6] == onlyCNNumber) {

return7;

}elseif(numChars[7] == onlyCNNumber) {

return8;

}elseif(numChars[8] == onlyCNNumber) {

return9;

}

return0;

}

/**

*将一位数字转换为一位中文数字;eg:1返回一;

*

*@paramonlyArabNumber

*@return

*/

publicstaticcharnumberCharArab2CN(charonlyArabNumber) {

if(onlyArabNumber =='0') {

returnnumZero;

}

if(onlyArabNumber >'0'&& onlyArabNumber <='9') {

returnnumChars[onlyArabNumber -'0'- 1];

}

returnonlyArabNumber;

}

/**

*

*@paramnum

*@return

*/

publicstaticString numberArab2CN(Integer num) {

String tempNum = num +"";

//传说中的分页算法;

intnumLen = tempNum.length();

intstart = 0;

intend = 0;

intper = 4;

inttotal = (int) ((numLen + per - 1) / per);

intinc = numLen % per;

/*

* 123,1234,1234四位一段,进行处理;

*/

String[] numStrs =newString[total];

for(inti = total - 1; i >= 0; i--) {

start = (i - 1) * per + inc;

if(start < 0) {

start = 0;

}

end = i * per + inc;

numStrs[i] = tempNum.substring(start, end);

}

String tempResultNum ="";

intrempNumsLen = numStrs.length;

for(inti = 0; i < rempNumsLen; i++) {

//小于1000补零处理;

if(i > 0 && Integer.parseInt(numStrs[i]) < 1000) {

tempResultNum +=numZero

+numberKArab2CN(Integer.parseInt(numStrs[i]));

}else{

tempResultNum +=numberKArab2CN(Integer.parseInt(numStrs[i]));

}

//加上单位(万,亿....)

if(i < rempNumsLen - 1) {

tempResultNum +=bigUnits[rempNumsLen - i - 2];

}

}

//去掉未位的零

tempResultNum = tempResultNum.replaceAll(numZero+"$","");

returntempResultNum;

}

/**

*将千以内的数字转换为中文数字;

*

*@paramnum

*@return

*/

privatestaticString numberKArab2CN(Integer num) {

char[] numChars = (num +"").toCharArray();

String tempStr ="";

intinc =units.length- numChars.length;

for(inti = 0; i < numChars.length; i++) {

if(numChars[i] !='0') {

tempStr +=numberCharArab2CN(numChars[i]) +units[i + inc];

}else{

tempStr +=numberCharArab2CN(numChars[i]);

}

}

//将连续的零保留一个

tempStr = tempStr.replaceAll(numZero+"+",numZero+"");

//去掉未位的零

tempStr = tempStr.replaceAll(numZero+"$","");

returntempStr;

}

/**

*处理千以内中文数字,返回4位数字字符串,位数不够以"0"补齐;

*

*@paramnumberCN

*@return

*/

privatestaticString numberKCN2Arab(String numberCN) {

if("".equals(numberCN)) {

return"";

}

int[] nums =newint[4];

if(numberCN !=null) {

for(inti = 0; i <units.length; i++) {

intidx = numberCN.indexOf(units[i]);

if(idx > 0) {

chartempNumChar = numberCN.charAt(idx - 1);

inttempNumInt =numberCharCN2Arab(tempNumChar);

nums[i] = tempNumInt;

}

}

//处理十位

charones = numberCN.charAt(numberCN.length() - 1);

nums[nums.length- 1] =numberCharCN2Arab(ones);

//处理个位

if((numberCN.length() == 2 || numberCN.length() == 1)

&& numberCN.charAt(0) =='十') {

nums[nums.length- 2] = 1;

}

}

//返回结果

String tempNum ="";

for(inti = 0; i < nums.length; i++) {

tempNum += nums[i];

}

return(tempNum);

}

}

原文地址http://blog.csdn.net/yzy0612/article/details/5843069