人民币小写转大写（Java 实现）

//ChangeRMB.java /** * * programmed by HuangHeliang * 2009.04.15 10:20:51 * */ //package com.avtech.hhl; import java.io.*; 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); } }