Java代碼實現數字轉換中文大寫及人民幣大寫

package com.sdcncsi.common.util;


import java.text.DecimalFormat;


public class ZhTest {
private static final String digit_0 = "零壹貳叄肆伍陸柒捌玖";
private static final String digit_1 = "零一二三四五六七八九";
private static final String[] digit_2 = { "", "十", "百", "千" };
private static final String[] digit_3 = { "", "拾", "佰", "仟" };
private static final String[] digit_4 = { "", "萬", "億", "萬億", "億億" };


/**
* @param args
*/
public static void main(String[] args) {
System.out.println(changeDigit("504.00", false));
System.out.println(changeDigit("2012.12", false));
System.out.println(changeDigit("210.12", true));
System.out.println(changeNumberRMB(210.12));
}


/**
* Description: 數字轉化成整數
* 
* @param str
* @param bo
* @return
*/
public static String changeDigit(String str, boolean bo) {
StringBuffer strbu = new StringBuffer();
int dou = str.indexOf(".");
// :判斷是否爲小數還是整數，長度小於零爲整數
if (dou < 0) {
dou = str.length();
}
// :獲取整數部分
String inter = str.substring(0, dou);
strbu.append(changeInteger(Long.parseLong(inter), bo));
// :處理小數部分
if (dou != str.length()) {
strbu.append("點");
// :獲取小數點後所有數
String xh = str.substring(dou + 1);
for (int i = 0; i < xh.length(); i++) {
if (bo) {
strbu.append(digit_0.charAt(Integer.parseInt(xh.substring(
i, i + 1))));
} else {
strbu.append(digit_1.charAt(Integer.parseInt(xh.substring(
i, i + 1))));
}
}
}
String strs = strbu.toString();
// :處理特殊情況，可能不全
if (strs.startsWith("零")) {
strs = strs.substring(1);
}
if (strs.startsWith("一十")) {
strs = strs.substring(1);
}
while (strs.endsWith("零")) {
strs = strs.substring(0, strs.length() - 1);
}
if (strs.startsWith("點")) {
strs = "零" + strs;
}
if (strs.endsWith("點")) {
strs = strs.substring(0, strs.length() - 1);
}
return strs;
}


/**
* 位數小於4時，調用處理數據
* 
* @param str
* @param bo
* @return
*/
public static String readNumber(String str, boolean bo) {
StringBuffer strbu = new StringBuffer();
if (str.length() != 4) {
return null;
}
for (int i = 0; i < 4; i++) {
char ch = str.charAt(i);
if (ch == '0' && i > 1 && str.charAt(i - 1) == '0') {
continue;
}
if (ch != '0' && i > 1 && str.charAt(i - 1) == '0') {
strbu.append('零');
}
if (ch != '0') {
if (bo) {
strbu.append(digit_0.charAt(ch - 48));
strbu.append(digit_3[4 - i - 1]);
} else {
strbu.append(digit_1.charAt(ch - 48));
strbu.append(digit_2[4 - i - 1]);
}
}
}
return strbu.toString();
}


/**
* 整數部分轉換大寫
* 
* @param lon
* @param bo
* @return
*/
public static String changeInteger(long lon, boolean bo) {
StringBuffer strbu = new StringBuffer();
// :增加3位數,爲了完成大寫轉換
String strN = "000" + lon;
int strN_L = strN.length() / 4;
// :根據不同的位數長度，消除strN"0"的個數
strN = strN.substring(strN.length() - strN_L * 4);
for (int i = 0; i < strN_L; i++) {
String s1 = strN.substring(i * 4, i * 4 + 4);
String s2 = readNumber(s1, bo);
strbu.append(s2);
if (s2.length() != 0) {
strbu.append(digit_4[strN_L - i - 1]);
}
}
String s = new String(strbu);
if (s.length() != 0 && s.startsWith("零"))
s = s.substring(1);
return s;
}


/**
* 人名幣輸出格式
* 
* @param rmb
* @return
*/
public static String changeNumberRMB(double rmb) {
String strRMB = "" + rmb;
DecimalFormat df = new DecimalFormat("#.#");
df.setMaximumFractionDigits(2);
strRMB = df.format(rmb).toString();
// :true人民幣大寫，並返回數據
strRMB = changeDigit(strRMB, true);
if (strRMB.indexOf("點") >= 0) {
strRMB = strRMB + "零";
strRMB = strRMB.replaceAll("點", "圓");
String str1 = strRMB.substring(0, strRMB.indexOf("圓") + 1);
String str2 = strRMB.substring(strRMB.indexOf("圓") + 1);
strRMB = str1 + str2.charAt(0) + "角" + str2.charAt(1) + "分整";
} else {
strRMB = strRMB + "圓整";
}
return "人民幣(大寫):" + strRMB;
}


}