阿拉伯數字和中文金額之間的相互轉化

 一個工具類，提供了阿拉伯數字和中文金額之間的相互轉化。直接可以使用

代碼如下：

 

package org.pengxiaofei.common.tools;

import java.text.NumberFormat;
import java.util.HashMap;
import java.util.Map;
/***
 *本工具類主要提供數字和中文金額的相互轉化
 *
 * @author 朱鵬飛
 *
 *@version 1.0
 */
public class NumberConvertUtil {

    /**
     * 將數字轉成中文金額
     *
     * @param num
     * @return
     */
    public static String translate(int num) {

        return translate((long) num);
    }

    /**
     * 將數字轉成以逗號分開
     *
     * @param num
     * @return
     */
    public static String getCommaNumber(long num) {

        return NumberFormat.getInstance().format(num) + ".00";
    }

    /**
     * 將數字轉成中文金額
     *
     * @param num
     * @return
     */
    public static String translate(long num) {

        return translate(num, true);
    }

    /**
     * 將數字轉成中文
     *
     * @param num
     * @param isHead
     *            是否爲高位
     * @return
     */
    private static String translate(long num, boolean isHead) {

        StringBuilder result = new StringBuilder();

        // 求出數字的總位數
        int size = String.valueOf(num).length();

        // 數字可分成萬的端數
        int powerNum = (size % 4 == 0) ? (size / 4 - 1) : (size / 4);

        // 先取出最高一段，轉換成中文數字
        result.append(getBelowTenThousandString(
                (int) (num / getPower(powerNum)), isHead));

        // 添加最高端的萬級別的單位
        result.append(getBigUnit(powerNum));

        // 再遞歸添加低端位數字轉化成的中文

        long leftNum = num % (long) getPower(powerNum);

        if (leftNum != 0) {

            result.append(translate(leftNum, false));
        }

        return result.toString();

    }

    /**
     * 獲取萬以下的數字的表示法
     *
     * @param num
     *            數字
     * @param isHead
     *            是否爲一個數字的高位,如1234不是10001234的高位，而1000是10001234的高位
     * @return
     */
    private static String getBelowTenThousandString(int num, boolean isHead) {

        char[] chineseNum = { '零', '壹', '貳', '叄', '肆', '伍', '陸', '柒', '捌', '玖' };

        char[] smallUnit = { '仟', '佰', '拾' };

        // 先判斷是否爲零
        if (num == 0) {

            // 是高位則添加零(因爲它就是零),否則返回空字符串
            if (isHead) {

                return String.valueOf(chineseNum[0]);
            } else {

                return "";
            }

        }

        // 仟、佰、拾、個位是否爲零
        boolean[] isNotZero = new boolean[4];

        StringBuilder result = new StringBuilder();

        // 低位如果小於1000就要就加零連接高位

        if (num < 1000 && !isHead) {

            result.append(chineseNum[0]);
        }

        // 千位的處理
        int leftNum = num;
        if (num >= 1000) {

            result.append(chineseNum[num / 1000]);
            result.append(smallUnit[0]);
            isNotZero[0] = true;
        }

        // 百位的處理
        leftNum = num % 1000;
        if (leftNum / 100 != 0) {

            result.append(chineseNum[leftNum / 100]);
            result.append(smallUnit[1]);
            isNotZero[1] = true;
        } else {

            if (isNotZero[0] && ((num % 1000) != 0)) {

                result.append(chineseNum[0]);
            }

        }

        // 十位的處理
        leftNum = num % 100;
        if (leftNum / 10 != 0) {

            if (leftNum / 10 != 1 || num >= 100) {

                result.append(chineseNum[leftNum / 10]);
            }

            result.append(smallUnit[2]);
            isNotZero[2] = true;
        } else {

            if (isNotZero[1] && ((num % 100) != 0)) {
                result.append(chineseNum[0]);
            }

        }

        // 個位的處理
        leftNum = num % 10;
        if (leftNum != 0) {

            result.append(chineseNum[leftNum]);
            isNotZero[3] = true;
        }

        return result.toString();
    }

    /**
     * 獲取萬的num次方的單位(萬，億，萬億，億億之類的)
     *
     * @param num
     * @return
     */
    private static String getBigUnit(int num) {

        char[] bigUnit = { '萬', '億' };

        if (num == 0) {

            return "";
        }

        String unitString = getBigUnit(num - 1);

        return (unitString.indexOf(bigUnit[0]) > -1) ?

        (unitString.replace(bigUnit[0], bigUnit[1]))
                : (bigUnit[0] + unitString);

    }

    /**
     * 獲取一萬的size次冪
     *
     * @param size
     * @return
     */
    private static Long getPower(int size) {

        if (size > 4) {

            throw new IllegalArgumentException("數字超過範圍");
        }

        Long result = 1L;

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

            result *= 10000L;
        }

        return result;
    }

    /***
     *中文金額字符
     */
    private static final Character[] CN_NUMERIC = { '一', '二', '三', '四', '五',
            '六', '七', '八', '九', '壹', '貳', '叄', '肆', '伍', '陸', '柒', '捌', '玖',
            '十', '百', '千', '拾', '佰', '仟', '萬', '億', '○', 'Ｏ', '零' };

    private static Map<Character, Integer> cnNumeric = null;

    static {
        cnNumeric = new HashMap<Character, Integer>(40, 0.85f);
        for (int j = 0; j < 9; j++)
            cnNumeric.put(CN_NUMERIC[j], j + 1);
        for (int j = 9; j < 18; j++)
            cnNumeric.put(CN_NUMERIC[j], j - 8);
        cnNumeric.put('兩', 2);
        cnNumeric.put('十', 10);
        cnNumeric.put('拾', 10);
        cnNumeric.put('百', 100);
        cnNumeric.put('佰', 100);
        cnNumeric.put('千', 1000);
        cnNumeric.put('仟', 1000);
        cnNumeric.put('萬', 10000);
        cnNumeric.put('億', 100000000);
    }

    public static int isCNNumeric(char c) {
        Integer i = cnNumeric.get(c);
        if (i == null)
            return -1;
        return i.intValue();
    }
    /***
     * 將中文金額數字轉換爲阿拉伯數字
     * @param cnn
     * @param flag 是否有繁體的中文單位（佰，仟，拾）
     * @return
     */
    public static int cnNumericToArabic(String cnn, boolean flag) {

        cnn = cnn.trim();
        if (cnn.length() == 1)
            return isCNNumeric(cnn.charAt(0));

        if (flag)
            cnn = cnn.replace('佰', '百').replace('仟', '千').replace('拾', '十')
                    .replace('零', ' ');
        // System.out.println(cnn);
        int yi = -1, wan = -1, qian = -1, bai = -1, shi = -1;
        int val = 0;
        yi = cnn.lastIndexOf('億');
        if (yi > -1) {
            val += cnNumericToArabic(cnn.substring(0, yi), false) * 100000000;
            if (yi < cnn.length() - 1)
                cnn = cnn.substring(yi + 1, cnn.length());
            else
                cnn = "";

            if (cnn.length() == 1) {
                int arbic = isCNNumeric(cnn.charAt(0));
                if (arbic <= 10)
                    val += arbic * 10000000;
                cnn = "";
            }
        }

        wan = cnn.lastIndexOf('萬');
        if (wan > -1) {
            val += cnNumericToArabic(cnn.substring(0, wan), false) * 10000;
            if (wan < cnn.length() - 1)
                cnn = cnn.substring(wan + 1, cnn.length());
            else
                cnn = "";
            if (cnn.length() == 1) {
                int arbic = isCNNumeric(cnn.charAt(0));
                if (arbic <= 10)
                    val += arbic * 1000;
                cnn = "";
            }
        }

        qian = cnn.lastIndexOf('千');
        if (qian > -1) {
            val += cnNumericToArabic(cnn.substring(0, qian), false) * 1000;
            if (qian < cnn.length() - 1)
                cnn = cnn.substring(qian + 1, cnn.length());
            else
                cnn = "";
            if (cnn.length() == 1) {
                int arbic = isCNNumeric(cnn.charAt(0));
                if (arbic <= 10)
                    val += arbic * 100;
                cnn = "";
            }
        }

        bai = cnn.lastIndexOf('百');
        if (bai > -1) {
            val += cnNumericToArabic(cnn.substring(0, bai), false) * 100;
            if (bai < cnn.length() - 1)
                cnn = cnn.substring(bai + 1, cnn.length());
            else
                cnn = "";
            if (cnn.length() == 1) {
                int arbic = isCNNumeric(cnn.charAt(0));
                if (arbic <= 10)
                    val += arbic * 10;
                cnn = "";
            }
        }

        shi = cnn.lastIndexOf('十');
        if (shi > -1) {
            if (shi == 0)
                val += 1 * 10;
            else
                val += cnNumericToArabic(cnn.substring(0, shi), false) * 10;
            if (shi < cnn.length() - 1)
                cnn = cnn.substring(shi + 1, cnn.length());
            else
                cnn = "";
        }

        cnn = cnn.trim();
        for (int j = 0; j < cnn.length(); j++)
            val += isCNNumeric(cnn.charAt(j))
                    * Math.pow(10, cnn.length() - j - 1);

        return val;
    }


}