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JAVA:字符串金额转成中文大写
/*
* Amount2RMB.java 2008-6-15
*/
package test;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Amount2RMB {
private static final Pattern AMOUNT_PATTERN =
Pattern.compile("^(0|[1-9]\\d{0,11})\\.(\\d\\d)$"); // 不考虑分隔符的正确性
private static final char[] RMB_NUMS = "零壹贰叁肆伍陆柒捌玖".toCharArray();
private static final String[] UNITS = {"", "", "", ""};
private static final String[] U1 = {"", "", "", ""};
private static final String[] U2 = {"", "", "亿"};
/**
* 将金额(整数部分等于或少于12位,小数部分2位)转换为中文大写形式.
* @param amount 金额数字
* @return 中文大写
* @throws IllegalArgumentException
*/
public static String convert(String amount) throws IllegalArgumentException {
// 去掉分隔符
amount = amount.replace(",", "");
// 验证金额正确性
if (amount.equals("0.00")) {
throw new IllegalArgumentException("金额不能为零.");
}
Matcher matcher = AMOUNT_PATTERN.matcher(amount);
if (! matcher.find()) {
throw new IllegalArgumentException("输入金额有误.");
}
String integer = matcher.group(1); // 整数部分
String fraction = matcher.group(2); // 小数部分
String result = "";
if (! integer.equals("0")) {
result += integer2rmb(integer) + UNITS[0]; // 整数部分
}
if (fraction.equals("00")) {
result += UNITS[3]; // 添加[整]
} else if (fraction.startsWith("0") && integer.equals("0")) {
result += fraction2rmb(fraction).substring(1); // 去掉分前面的[零]
} else {
result += fraction2rmb(fraction); // 小数部分
}
return result;
}
// 将金额小数部分转换为中文大写
private static String fraction2rmb(String fraction) {
char jiao = fraction.charAt(0); //
char fen = fraction.charAt(1); //
return (RMB_NUMS[jiao - '0'] + (jiao > '0' ? UNITS[1] : ""))
+ (fen > '0' ? RMB_NUMS[fen - '0'] + UNITS[2] : "");
}
// 将金额整数部分转换为中文大写
private static String integer2rmb(String integer) {
StringBuilder buffer = new StringBuilder();
// 从个位数开始转换
int i, j;
for (i = integer.length() - 1, j = 0; i >= 0; i--, j++) {
char n = integer.charAt(i);
if (n == '0') {
// 当n是0且n的右边一位不是0时,插入[零]
if (i < integer.length() - 1 && integer.charAt(i + 1) != '0') {
buffer.append(RMB_NUMS[0]);
}
// 插入[万]或者[亿]
if (j % 4 == 0) {
if (i > 0 && integer.charAt(i - 1) != '0'
|| i > 1 && integer.charAt(i - 2) != '0'
|| i > 2 && integer.charAt(i - 3) != '0') {
buffer.append(U2[j / 4]);
}
}
} else {
if (j % 4 == 0) {
buffer.append(U2[j / 4]); // 插入[万]或者[亿]
}
buffer.append(U1[j % 4]); // 插入[拾]、[佰]或[仟]
buffer.append(RMB_NUMS[n - '0']); // 插入数字
}
}
return buffer.reverse().toString();
}
public static void main(String[] args) {
// log4j?
System.out.println("壹万陆仟肆佰零玖元零贰分".equals(convert("16,409.02")));
System.out.println("壹仟肆佰零玖元伍角".equals(convert("1,409.50")));
System.out.println("陆仟零柒元壹角肆分".equals(convert("6,007.14")));
System.out.println("壹仟陆佰捌拾元叁角贰分".equals(convert("1,680.32")));
System.out.println("叁佰贰拾伍元零肆分".equals(convert("325.04")));
System.out.println("肆仟叁佰贰拾壹元整".equals(convert("4,321.00")));
System.out.println("壹分".equals(convert("0.01")));
System.out.println(convert("1234,5678,9012.34")
.equals("壹仟贰佰叁拾肆亿伍仟陆佰柒拾捌万玖仟零壹拾贰元叁角肆分"));
System.out.println(convert("1000,1000,1000.10")
.equals("壹仟亿零壹仟万零壹仟元壹角"));
System.out.println(convert("9009,9009,9009.99")
.equals("玖仟零玖亿玖仟零玖万玖仟零玖元玖角玖分"));
System.out.println(convert("5432,0001,0001.01")
.equals("伍仟肆佰叁拾贰亿零壹万零壹元零壹分"));
System.out.println(convert("1000,0000,1110.00")
.equals("壹仟亿零壹仟壹佰壹拾元整"));
System.out.println(convert("1010,0000,0001.11")
.equals("壹仟零壹拾亿零壹元壹角壹分"));
System.out.println(convert("1000,0000,0000.01")
.equals("壹仟亿元零壹分"));
}
}
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