不多说上代码，亲测有效，本人公司项目使用了该工具类，目前没发现什么问题。

package com.rock.util;import java.math.BigDecimal;/*** 大写汉字转为阿拉伯数字* @author gyd**/
public class ChineseChangeToNumber {/*** 中文简体*/public static final String[] RMB_NUMBERS = new String[] {"一","二","三","四","五","六","七","八","九","零"};/*** 中文繁体*/public static final String[] BIG_RMB_NUMBERS = new String[] {"壹","贰","叁","肆","伍","陆","柒","捌","玖","零"};/*** 与汉字相应的转化的数字*/public static final Long[] TO_ARABIC_NUMBERS = new Long[] {1L,2L,3L,4L,5L,6L,7L,8L,9L,0L};/*** 人民币单位关键词  简写（大写数字倍数，一定要由大到小）*/public static final String[] RMB_UNIT=new String[] {"亿","万","千","百","十","元","角","分","厘"};/*** 繁体*/public static final String[] BIG_RMB_UNIT=new String[] {"億","萬","仟","佰","拾","圆","角","分","厘"};/*** 与人民币单位关键词对应的基数*/public static final BigDecimal[] TO_CARDINAL_NUMBERS = new BigDecimal[] {new BigDecimal(100000000L), new BigDecimal(10000L),new BigDecimal(1000L),new BigDecimal(100L), BigDecimal.TEN, BigDecimal.ONE, new BigDecimal("0.1"),new BigDecimal("0.01"),new BigDecimal("0.001")};/*** 大写转化为小写的过程操作*/public static BigDecimal ChineseToNumber(String money) {BigDecimal number = getDigitalNum(money);//return Double.parseDouble(number.toString());//return number.toString();return new BigDecimal(number.toString());}/*** 辅助类，处理中文数字转换成阿拉伯数字，利用递归算法* @param money* @return*/public static BigDecimal getDigitalNum(String money) {BigDecimal result = BigDecimal.ZERO;if((money==null || money.trim().length()<=0)) {return result;}//匹配大写金额的单位for(int i = 0;i<RMB_UNIT.length;i++) {//查找字符中的简繁单位int index = money.lastIndexOf(RMB_UNIT[i]) == -1 ? money.lastIndexOf(BIG_RMB_UNIT[i]): money.lastIndexOf(RMB_UNIT[i]);if(index>=0) {String pre_money = money.substring(0,index);//截取当前单位前面的中文字符串money = money.substring(index+1);//截取当前单位后面的字符串，进行下一次迭代比较if((pre_money==null || pre_money.length()<=0) && TO_CARDINAL_NUMBERS[i].intValue()==10) {//处理拾开头的特殊字符例如拾、十result = result.add(TO_CARDINAL_NUMBERS[i]);}else {//对当前单位截取的前面的字符递归处理result = result.add(getDigitalNum(pre_money).multiply(TO_CARDINAL_NUMBERS[i]));}}}//如果不带单位直接阿拉伯数字匹配替换if(money!=null && money.length()>0) {result = result.add(getArabicNumByBig(money));}return result;}/*** 辅助类中文数字转为对应阿拉伯数字* @param money* @return*/public static BigDecimal getArabicNumByBig(String big) {BigDecimal result = BigDecimal.ZERO;for(int j = 0;j<RMB_NUMBERS.length;j++) {big = big.replaceAll(RMB_NUMBERS[j], TO_ARABIC_NUMBERS[j].toString());//中文小写替换big = big.replaceAll(BIG_RMB_NUMBERS[j], TO_ARABIC_NUMBERS[j].toString());//中文大写替换}try {result = new BigDecimal(big);} catch (Exception e) {result = BigDecimal.ZERO;}return result;}}

原理就是使用递归算法。根据事先定好的数组，利用递归，取每一个汉字对应数字，直到递归结束。没有用number而使用了BigDecimal，是由于number可能导致精度丢失。该工具类处理最多能处理小数点前14位的数字金额，一般网站的转化大多也是如此。

测试如下