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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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