可以转换以下格式的数字：

一百

三千五

二万三千五百三

3千4百

package com.baijob.vsearch.util;    import java.util.*;    /**   * 处理数词的工具类   * @author liushiquan   *   */  public class DigitUtil {      /**       * 阿拉伯数字       */      private static Set<Character> araDigits = new HashSet<Character>();      /**       * 汉字中的数字字符       */      private static char[] SCDigits = {'零','一','二','三','四','五','六','七','八','九','十','百','千','万','亿'};        /**       * 汉字中的大写数字字符       */      private static char[] TCDigits = {'零','壹','贰','叁','肆','伍','陆','柒','捌','玖','拾','佰','仟','万','亿'};      /**       * 繁体中文和简体中文的对应关系       */      private static Map<Character,Character> map = new HashMap<Character,Character>();      static {          for (int i = 0; i < TCDigits.length; i++) {              map.put(TCDigits[i], SCDigits[i]);          }          for (char i = '0'; i <= '9'; i++) {              araDigits.add(i);          }      }      private DigitUtil(){        }      public static void main(String[] args) {          System.out.println(parseDigits("零三"));      }      /**       * 解析中文格式的数字，假定参数中全是汉字，否则会解析异常，解析失败返回null       * @param hanzi       * @return       */      public static Integer parseDigits(String hanzi) {          if (!isDigits(hanzi))              return null;          int ret;          try {              if (hanzi.charAt(0) == '+')                  hanzi = hanzi.substring(1);                ret = Integer.parseInt(hanzi);          } catch (Exception e) {                char[] chars = hanzi.toCharArray();              changeTCtoSC(chars);                ret = parse(chars,0,chars.length,1);          }            return ret;      }      public static boolean isDigits(String s) {          if (s.charAt(0) == '+')              s = s.substring(1);          try {              Integer.parseInt(s);              return true;          } catch (Exception e) {              for (int i = 0; i < s.length(); i++) {                  char c = s.charAt(i);                  if (!map.values().contains(c) && !araDigits.contains(c))                      return false;              }                return true;          }      }      private static int parse(char[] chars,int start,int end, int preNumber) {          int ret = 0;          if (start == end) {              ret = 0;          } else if (start + 1 == end) {              switch (chars[start]) {              case '一':              case '1':                  ret = 1 * preNumber;                  break;              case '二':              case '2':                  ret = 2 * preNumber;                  break;              case '三':              case '3':                  ret = 3 * preNumber;                  break;              case '四':              case '4':                  ret = 4 * preNumber;                  break;              case '五':              case '5':                  ret = 5 * preNumber;                  break;              case '六':              case '6':                  ret = 6 * preNumber;                  break;              case '七':              case '7':                  ret = 7 * preNumber;                  break;              case '八':              case '8':                  ret = 8 * preNumber;                  break;              case '九':              case '9':                  ret = 9 * preNumber;                  break;              }          } else {              int index;              if ((index = indexOf(chars,start,end,'零')) == 0 || (index = indexOf(chars,start,end,'0')) == 0) {                  ret = parse(chars, start + 1, end, 1);              } else if ((index = indexOf(chars,start,end,'亿')) != -1) {                  ret = parse(chars, start,index, 1) * 100000000 + parse(chars,index + 1,end,10000000);              } else if ((index = indexOf(chars,start,end,'万')) != -1) {                  ret = parse(chars, start,index, 1) * 10000 + parse(chars,index + 1,end,1000);              } else if ((index = indexOf(chars,start,end,'千')) != -1) {                  ret = parse(chars, start, index, 1) * 1000 + parse(chars,index + 1,end,100);              } else if ((index = indexOf(chars,start,end,'百')) != -1) {                  ret = parse(chars, start, index, 1) * 100 + parse(chars,index + 1,end,10);              } else if ((index = indexOf(chars,start,end,'十')) != -1) {                  ret = parse(chars, start, index, 1) * 10 + parse(chars,index + 1,end,1);              }            }          return ret;      }      private static int indexOf(char[] chars, int start, int end, char c) {          for (int i = start; i < end; i++) {              if (chars[i] == c)                  return i;          }          return -1;      }      /**       * 将繁体中文转换为简体中文       * @param chars       */      private static void changeTCtoSC(char[] chars) {          for (int i = 0; i < chars.length; i++) {              Character c = map.get(chars[i]);              if (c != null)                  chars[i] = c;          }      }  }  //该片段来自于http://outofmemory.cn