com.xiaoleilu.hutool.convert.NumberWordFormater Maven / Gradle / Ivy
package com.xiaoleilu.hutool.convert;
import com.xiaoleilu.hutool.util.StrUtil;
/**
* 将浮点数类型的number转换成英语的表达方式
* 参考博客:http://blog.csdn.net/eric_sunah/article/details/8713226
*
* @author Looly
* @since 3.0.9
* @see http://blog.csdn.net/eric_sunah/article/details/8713226
*/
public class NumberWordFormater {
private static final String[] NUMBER = new String[] { "", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN",
"EIGHT", "NINE" };
private static final String[] NUMBER_TEEN = new String[] { "TEN", "ELEVEN", "TWELEVE", "THIRTEEN", "FOURTEEN",
"FIFTEEN", "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" };
private static final String[] NUMBER_TEN = new String[] { "TEN", "TWENTY", "THIRTY", "FORTY", "FIFTY", "SIXTY",
"SEVENTY", "EIGHTY", "NINETY" };
private static final String[] NUMBER_MORE = new String[] { "", "THOUSAND", "MILLION", "BILLION" };
/**
* 将阿拉伯数字转为英文表达式
*
* @param x
* 阿拉伯数字,可以为{@link Number}对象,也可以是普通对象,最后会使用字符串方式处理
* @return 英文表达式
*/
public static String format(Object x) {
if (x != null) {
return format(x.toString());
} else {
return "";
}
}
/**
* 将阿拉伯数字转为英文表达式
*
* @param x
* 阿拉伯数字字符串
* @return 英文表达式
*/
private static String format(String x) {
int z = x.indexOf("."); // 取小数点位置
String lstr = "", rstr = "";
if (z > -1) { // 看是否有小数,如果有,则分别取左边和右边
lstr = x.substring(0, z);
rstr = x.substring(z + 1);
} else {
// 否则就是全部
lstr = x;
}
String lstrrev = StrUtil.reverse(lstr); // 对左边的字串取反
String[] a = new String[5]; // 定义5个字串变量来存放解析出来的叁位一组的字串
switch (lstrrev.length() % 3) {
case 1:
lstrrev += "00";
break;
case 2:
lstrrev += "0";
break;
}
String lm = ""; // 用来存放转换後的整数部分
for (int i = 0; i < lstrrev.length() / 3; i++) {
a[i] = StrUtil.reverse(lstrrev.substring(3 * i, 3 * i + 3)); // 截取第一个叁位
if (!a[i].equals("000")) { // 用来避免这种情况:1000000 = one million
// thousand only
if (i != 0) {
lm = transThree(a[i]) + " " + parseMore(String.valueOf(i)) + " " + lm; // 加:
// thousand、million、billion
} else {
lm = transThree(a[i]); // 防止i=0时, 在多加两个空格.
}
} else {
lm += transThree(a[i]);
}
}
String xs = ""; // 用来存放转换後小数部分
if (z > -1) {
xs = "AND CENTS " + transTwo(rstr) + " "; // 小数部分存在时转换小数
}
return lm.trim() + " " + xs + "ONLY";
}
private static String parseFirst(String s) {
return NUMBER[Integer.parseInt(s.substring(s.length() - 1))];
}
private static String parseTeen(String s) {
return NUMBER_TEEN[Integer.parseInt(s) - 10];
}
private static String parseTen(String s) {
return NUMBER_TEN[Integer.parseInt(s.substring(0, 1)) - 1];
}
private static String parseMore(String s) {
return NUMBER_MORE[Integer.parseInt(s)];
}
// 两位
private static String transTwo(String s) {
String value = "";
// 判断位数
if (s.length() > 2) {
s = s.substring(0, 2);
} else if (s.length() < 2) {
s = "0" + s;
}
if (s.startsWith("0")) {// 07 - seven 是否小於10
value = parseFirst(s);
} else if (s.startsWith("1")) {// 17 seventeen 是否在10和20之间
value = parseTeen(s);
} else if (s.endsWith("0")) {// 是否在10与100之间的能被10整除的数
value = parseTen(s);
} else {
value = parseTen(s) + " " + parseFirst(s);
}
return value;
}
// 制作叁位的数
// s.length = 3
private static String transThree(String s) {
String value = "";
if (s.startsWith("0")) {// 是否小於100
value = transTwo(s.substring(1));
} else if (s.substring(1).equals("00")) {// 是否被100整除
value = parseFirst(s.substring(0, 1)) + " HUNDRED";
} else {
value = parseFirst(s.substring(0, 1)) + " HUNDRED AND " + transTwo(s.substring(1));
}
return value;
}
}
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