将数字转换成中文字符串

将数字转换成中文字符串

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RMBUtil.java

public class RMBUtil
{
    private static final String number[] = { "零", "一", "二", "三", "四", "五", "六", "七", "八", "九" };
    private static final String unit[]   = { "十", "百", "千", "万", "亿" };

    public static void main(String[] args)
    {
        System.out.println(num2CN(0));
        System.out.println(num2CN(-10));
        System.out.println(num2CN(-0));
        System.out.println(num2CN(9));
        System.out.println(num2CN(10));
        System.out.println(num2CN(99));
        System.out.println(num2CN(100));
        System.out.println(num2CN(999));
        System.out.println(num2CN(1000));
        System.out.println(num2CN(9999));
        System.out.println(num2CN(10000));
        System.out.println(num2CN(99999));
        System.out.println(num2CN(100000));
        System.out.println(num2CN(999999));
        System.out.println(num2CN(1010101010));
        System.out.println(num2CN(1100110011));
        System.out.println(num2CN(1000000001));
        System.out.println(num2CN(1000000000));
    }

    public static String num2CN(int value)
    {
        return map2CNValue(value);
    }

    private synchronized static String map2CNValue(int value)
    {
        sb = new StringBuffer();
        map2Num(mapSign(value));
        String s = sb.toString();

        if (s.length() > 1)
        {
            s = map2NatureLang(s);
        }

        // 处理 -号
        if (sign == -1)
        {
            s = "负" + s;
        }

        return s;
    }

    private static String mapSign(int value)
    {
        if (value < 0)
        {
            sign = -1;
        }
        else if (value > 0)
        {
            sign = 1;
        }
        else
        {
            sign = 0;
        }

        return String.valueOf(Math.abs(value));
    }

    private static void map2Num(final String num)
    {
        int length = num.length();
        if (length <= 12 && length >= 10)
        {
            mapFirst2Num(num);
            sb.append(unit[length - 10] + unit[4]);
            map2Num(num.substring(1));
        }
        else if (length == 9)
        {
            mapFirst2Num(num);
            sb.append(unit[4]);
            map2Num(num.substring(1));
        }
        else if (length <= 8 && length >= 6)
        {
            mapFirst2Num(num);
            sb.append(unit[length - 6] + unit[3]);
            map2Num(num.substring(1));
        }
        else if (length <= 5 && length >= 2)
        {
            mapFirst2Num(num);
            sb.append(unit[length - 2]);
            map2Num(num.substring(1));
        }
        else if (length == 1)
        {
            mapFirst2Num(num);
        }
    }

    private static void mapFirst2Num(final String num)
    {
        String s = num.substring(0, 1);
        int i = Integer.valueOf(s).intValue();
        sb.append(number[i]);
    }

    private static String map2NatureLang(final String num)
    {
        String s = num;

        // 简读零位
        s = s.replaceAll("零[千百十]*[亿万]*", "零");
        s = s.replaceAll("零+", "零");

        // 简读亿位万位
        int i = s.split("亿").length - 1;
        int j = s.split("万").length - 1;
        while (i > 1)
        {
            s = s.replaceFirst("亿", "");
            i--;
        }
        while (j > 1)
        {
            s = s.replaceFirst("万", "");
            j--;
        }

        // 简读开头"一十为十"
        s = s.replaceFirst("^一十", "十");

        // 省读未尾零
        s = s.replaceAll("零+$", "");

        // 省读相邻零位
        s = s.replaceAll("(亿)(零)([一二三四五六七八九])(千)", "$1$3$4");
        s = s.replaceAll("(万)(零)([一二三四五六七八九])(千)", "$1$3$4");
        s = s.replaceAll("(千)(零)([一二三四五六七八九])(百)", "$1$3$4");
        s = s.replaceAll("(百)(零)([一二三四五六七八九])(十)", "$1$3$4");

        return s;
    }

    private static StringBuffer sb;
    private static int          sign = 0;

}
 
 
 

零
负十
零
九
十
九十九
一百
九百九十九
一千
九千九百九十九
一万
九万九千九百九十九
十万
九十九万九千九百九十九
十亿一千零一十万一千零一十
十一亿零一十一万零一十一
十亿零一
十亿