人民币大小写转换工具类

package com.test.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public final class ChangeRMB {

    // 每个数字对应的大写
    private static final String[] num = { "零", "壹", "贰", "叁", "肆", "伍", "陆",
        "柒", "捌", "玖", };

    // 从低到高排列的单位
    private static final String[] bit = { "圆", "拾", "佰", "仟", "万", "拾", "佰",
        "仟", "亿", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿" };

    // 金额里面的角和分
    private static final String[] jf = { "角", "分" };

    /**
     * 处理金额的整数部分,返回"...圆整"
     *
     * @param integer
     * @return String
     * @throws Exception
     */
    public static String praseUpcaseRMB(String integer) throws Exception {
    StringBuilder sbdr = new StringBuilder("");
    int j = integer.length();
    if (j > bit.length) {
        throw new Exception("\n只能处理亿万亿以内的数据(含亿万亿)!");
    }
    char[] rmb = integer.toCharArray();
    for (int i = 0; i < rmb.length; i++) {
        int numLocate = Integer.parseInt("" + rmb[i]); // 大写数字位置
        int bitLocate = j - 1 - i; // 数字单位的位置
        /*
         * 连续大写零只添加一个
         */
        if (numLocate == 0) {
        if (!sbdr.toString().endsWith(num[0])) {
            sbdr.append(num[numLocate]);
        }
        continue;
        }
        /*
         * 下面的if语句保证 10065004583.05-->壹佰亿陆仟伍佰万肆仟伍佰捌拾叁圆零伍分
         */
        if (bit[bitLocate].equals("仟")) {
        String s = sbdr.toString();
        if (!s.endsWith(bit[bitLocate + 1]) && s.length() > 0) {
            if (s.endsWith(num[0])) {
            sbdr.deleteCharAt(sbdr.length() - 1);
            }
            sbdr.append(bit[bitLocate + 1]);
        }
        }
        sbdr.append(num[numLocate]);
        sbdr.append(bit[bitLocate]);
    }// end for
    /*
     * 去掉结尾"零"后,补全
     */
    if (sbdr.toString().endsWith(num[0])) {
        sbdr.deleteCharAt(sbdr.length() - 1);
        sbdr.append("圆整");
    } else {
        sbdr.append("整");
    }
    return sbdr.toString();
    }

    /**
     * 处理带小数的金额,整数部分交由上一个方法处理,小数部分自己处理
     *
     * @param integer
     * @param decimal
     * @return String
     * @throws Exception
     */
    public static String praseUpcaseRMB(String integer, String decimal)
        throws Exception {
    String ret = ChangeRMB.praseUpcaseRMB(integer);
    ret = ret.split("整")[0]; // 处理整数部分
    StringBuilder sbdr = new StringBuilder("");
    sbdr.append(ret);
    char[] rmbjf = decimal.toCharArray();
    for (int i = 0; i < rmbjf.length; i++) {
        int locate = Integer.parseInt("" + rmbjf[i]);
        if (locate == 0) {
        if (!sbdr.toString().endsWith(num[0])) {
            sbdr.append(num[locate]);
        }
        continue;
        }
        sbdr.append(num[locate]);
        sbdr.append(jf[i]);
    }
    return sbdr.toString();
    }

    /**
     * 将double形式的字符串(有两位小数或无小数)转换成人民币的大写格式
     *
     * @param doubleStr
     * @return String
     * @throws Exception
     */
    public static String doChangeRMB(String doubleStr) throws Exception {
    String result = null;
    if (doubleStr.contains(".")) { // 金额带小数
        int dotloc = doubleStr.indexOf(".");
        int strlen = doubleStr.length();
        String integer = doubleStr.substring(0, dotloc);
        String decimal = doubleStr.substring(dotloc + 1, strlen);
        result = ChangeRMB.praseUpcaseRMB(integer, decimal);
    } else { // 金额是整数
        String integer = doubleStr;
        result = ChangeRMB.praseUpcaseRMB(integer);
    }
    return result;
    }

    /**
     * 将double数值(有两位小数或无小数)转换成人民币的大写格式
     *
     * @param rmbDouble
     * @return String
     * @throws Exception
     */
    public static String doChangeRMB(double rmbDouble) throws Exception {
    String result = null;
    double theInt = Math.rint(rmbDouble);
    if (theInt > rmbDouble) {
        theInt -= 1;
    }
    double theDecimal = rmbDouble - theInt;
    String integer = new Long((long) theInt).toString();
    String decimal = "" + Math.round(theDecimal * 100);
    if (decimal.equals("0")) {
        result = ChangeRMB.praseUpcaseRMB(integer);
    } else {
        result = ChangeRMB.praseUpcaseRMB(integer, decimal);
    }
    return result;
    }

    public static void main(String[] args) throws Exception {
    System.out.print("输入小写人民币金额:");
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String in = br.readLine();
    String result = ChangeRMB.doChangeRMB(in);
    System.out.println("\n" + "------------转换结果------------");
    System.out.println(result);
    double d = 54628569856.68;
    String ret = ChangeRMB.doChangeRMB(d);
    System.out.println("\n" + "------------转换结果------------");
    System.out.println(ret);
    }
}