Java数字转汉字源码实例

方式一：

MoneyUtil.java

public class MoneyUtil {

public static String[] chineseDigits = new String[] { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖"};

/**

* 把金额转换为汉字表示的数量，小数点后四舍五入保留两位

* @param amount

* @return

*/

public static String amountToChinese(double amount) {

if(amount > 99999999999999.99 || amount < -99999999999999.99)

throw new IllegalArgumentException("参数值超出允许范围 (-99999999999999.99 ～ 99999999999999.99)！");

boolean negative = false;

if(amount < 0) {

negative = true;

amount = amount * (-1);

}

long temp = Math.round(amount * 100);

int numFen = (int)(temp % 10); // 分

temp = temp / 10;

int numJiao = (int)(temp % 10); //角

temp = temp / 10;

//temp 目前是金额的整数部分

int[] parts = new int[20]; // 其中的元素是把原来金额整数部分分割为值在 0~9999 之间的数的各个部分

int numParts = 0; // 记录把原来金额整数部分分割为了几个部分（每部分都在 0~9999 之间）

for(int i=0; ; i++) {

if(temp ==0)

break;

int part = (int)(temp % 10000);

parts[i] = part;

numParts ++;

temp = temp / 10000;

}

boolean beforeWanIsZero = true; // 标志“万”下面一级是不是 0

String chineseStr = "";

for(int i=0; i<numParts; i++) {

String partChinese = partTranslate(parts[i]);

if(i % 2 == 0) {

if("".equals(partChinese))

beforeWanIsZero = true;

else

beforeWanIsZero = false;

}

if(i != 0) {

if(i % 2 == 0)

chineseStr = "亿" + chineseStr;

else {

if("".equals(partChinese) && !beforeWanIsZero) // 如果“万”对应的 part 为 0，而“万”下面一级不为 0，则不加“万”，而加“零”

chineseStr = "零" + chineseStr;

else {

if(parts[i-1] < 1000 && parts[i-1] > 0) // 如果"万"的部分不为 0, 而"万"前面的部分小于 1000 大于 0， 则万后面应该跟“零”

chineseStr = "零" + chineseStr;

chineseStr = "万" + chineseStr;

}

}

}

chineseStr = partChinese + chineseStr;

}

if("".equals(chineseStr)) // 整数部分为 0, 则表达为"零元"

chineseStr = chineseDigits[0];

else if(negative) // 整数部分不为 0, 并且原金额为负数

chineseStr = "负" + chineseStr;

chineseStr = chineseStr + "元";

if(numFen == 0 && numJiao == 0) {

chineseStr = chineseStr + "整";

}

else if(numFen == 0) { // 0 分，角数不为 0

chineseStr = chineseStr + chineseDigits[numJiao] + "角";

}

else { // “分”数不为 0

if(numJiao == 0)

chineseStr = chineseStr + "零" + chineseDigits[numFen] + "分";

else

chineseStr = chineseStr + chineseDigits[numJiao] + "角" + chineseDigits[numFen] + "分";

}

return chineseStr;

}

/**

* 把一个 0~9999 之间的整数转换为汉字的字符串，如果是 0 则返回 ""

* @param amountPart

* @return

*/

private static String partTranslate(int amountPart) {

if(amountPart < 0 || amountPart > 10000) {

throw new IllegalArgumentException("参数必须是大于等于 0，小于 10000 的整数！");

}

String[] units = new String[] {"", "拾", "佰", "仟"};

int temp = amountPart;

String amountStr = new Integer(amountPart).toString();

int amountStrLength = amountStr.length();

boolean lastIsZero = true; //在从低位往高位循环时，记录上一位数字是不是 0

String chineseStr = "";

for(int i=0; i<amountStrLength; i++) {

if(temp == 0) // 高位已无数据

break;

int digit = temp % 10;

if(digit == 0) { // 取到的数字为 0

if(!lastIsZero) //前一个数字不是 0，则在当前汉字串前加“零”字;

chineseStr = "零" + chineseStr;

lastIsZero = true;

}

else { // 取到的数字不是 0

chineseStr = chineseDigits[digit] + units[i] + chineseStr;

lastIsZero = false;

}

temp = temp / 10;

}

return chineseStr;

}

public static void main(String[] args) {

if(args.length == 0) {

System.out.println("转换演示：");

System.out.println("-------------------------");

System.out.println("25000000000005.999: " + amountToChinese(25000000000005.999));

System.out.println("45689263.626: " + amountToChinese(45689263.626));

System.out.println("0.69457: " + amountToChinese(0.69457));

System.out.println("253.0: " + amountToChinese(253.0));

System.out.println("0: " + amountToChinese(0));

System.out.println("-------------------------");

System.out.println("999: " + amountToChinese(999));

//System.out.println(Long.MAX_VALUE);

//System.out.println(Long.MIN_VALUE);

}

else {

System.out.println("转换结果：");

System.out.println(args[0] + ": " + amountToChinese(Double.parseDouble(args[0])));

}

}

}

方式二：

MoneyFormat.java

class MoneyFormat{

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

private final String [] cPattern ={"","拾","佰","仟","万","拾","佰","仟","亿"};

private final String [] cfPattern = {"","角","分"};

private final String ZEOR = "零";

public MoneyFormat(){

System.out.println("run...");

}

public String format(String moneyString){

int dotPoint = moneyString.indexOf("."); //判断是否为小数

String moneyStr;

if(dotPoint != -1){

moneyStr = moneyString.substring(0,moneyString.indexOf("."));

}

else{

moneyStr = moneyString;

}

StringBuffer fraction = null; //小数部分的处理,以及最后的yuan.

StringBuffer ms = new StringBuffer();

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

ms.append(pattern[moneyStr.charAt(i) - 48]); //按数组的编号加入对应大写汉字

}

int cpCursor = 1;

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

ms.insert(j,cPattern[cpCursor]); //在j之后加字符,不影响j对原字符串的相对位置

//只是moneyStr.length()不断增加

//insert(j,"string")就在j位置处插入,j=0时为第一位

cpCursor = cpCursor == 8?1:cpCursor + 1; //亿位之后重新循环

}

while(ms.indexOf("零拾") != -1){ //当十位为零时用一个"零"代替"零拾"

//replace的起始于终止位置

ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);

}

while(ms.indexOf("零佰") != -1){ //当百位为零时,同理

ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);

}

while(ms.indexOf("零仟") != -1){ //同理

ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);

}

while(ms.indexOf("零万") != -1){ //万需保留，中文习惯

ms.replace(ms.indexOf("零万"),ms.indexOf("零万") + 2,"万");

}

while(ms.indexOf("零亿") != -1){ //同上

ms.replace(ms.indexOf("零亿"),ms.indexOf("零亿") + 2,"亿");

}

while(ms.indexOf("零零") != -1){//有连续数位出现零，即有以下情况，此时根据习惯保留一个零即可

ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);

}

while(ms.indexOf("亿万") != -1){ //特殊情况，如:100000000,根据习惯保留高位

ms.replace(ms.indexOf("亿万"),ms.indexOf("亿万") + 2,"亿");

}

while(ms.lastIndexOf("零") == ms.length()-1){ //当结尾为零j，不必显示,经过处理也只可能出现一个零

ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);

}

int end;

if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小数的进入

String fs = moneyString.substring(dotPoint + 1,moneyString.length());

if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前两位小数全为零，则跳过操作

end = fs.length() > 2?2:fs.length(); //仅保留两位小数

fraction = new StringBuffer(fs.substring(0,end));

for(int j = 0;j < fraction.length();j++){

fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替换大写汉字

}

for(int i = fraction.length();i > 0;i--){ //插入中文标识

fraction.insert(i,cfPattern[i]);

}

fraction.insert(0,"元"); //为整数部分添加标识

}

else{

fraction = new StringBuffer("元整");

}

}

else{

fraction = new StringBuffer("元整");

}

ms.append(fraction); //加入小数部分

return ms.toString();

}

public static void main(String [] ar){

//System.out.println(new MoneyFormat().format("10005022.123009"));

System.out.println(new MoneyFormat().format("999"));

}

}