汉字数字转数字 

　　为了便于以后重用，现把代码贴出来


 1 import java.math.BigInteger;
 2 import java.util.HashMap;
 3 import java.util.Map;
 4 import java.util.regex.Matcher;
 5 import java.util.regex.Pattern;
 6 
 7 /**
 8  * 模块： 描述：将汉字数字转换为数字
 9  * 
10  * @author 李乐 601235723@qq.com
11  */
12 public class ChineseNumber {
13     private ChineseNumber() {
14     }
15 
16     private static Pattern CHN_NUM_PATTERN = Pattern.compile("[一二三四五六七八九][十百千]?");
17     private static Map<Character, Integer> CHN_UNITS = new HashMap<Character, Integer>();
18     private static Map<Character, Integer> CHN_NUMS = new HashMap<Character, Integer>();
19     static {
20         CHN_UNITS.put('十', 10);
21         CHN_UNITS.put('百', 100);
22         CHN_UNITS.put('千', 1000);
23         CHN_UNITS.put('万', 10000);
24         CHN_UNITS.put('亿', 10000000);
25         CHN_NUMS.put('一', 1);
26         CHN_NUMS.put('二', 2);
27         CHN_NUMS.put('三', 3);
28         CHN_NUMS.put('四', 4);
29         CHN_NUMS.put('五', 5);
30         CHN_NUMS.put('六', 6);
31         CHN_NUMS.put('七', 7);
32         CHN_NUMS.put('八', 8);
33         CHN_NUMS.put('九', 9);
34     }
35 
36     /**
37      * 将小于一万的汉字数字，转换为BigInteger
38      * 
39      * @param chnNum
40      * @return
41      */
42     private static BigInteger getNumber(String chnNum) {
43         BigInteger number = BigInteger.valueOf(0);
44         Matcher m = CHN_NUM_PATTERN.matcher(chnNum);
45         m.reset(chnNum);
46         while (m.find()) {
47             String subNumber = m.group();
48             if (subNumber.length() == 1) {
49                 number = number.add(BigInteger.valueOf(CHN_NUMS.get(subNumber.charAt(0))));
50             } else if (subNumber.length() == 2) {
51                 number = number.add(BigInteger.valueOf(CHN_NUMS.get(subNumber.charAt(0))).multiply(BigInteger.valueOf(CHN_UNITS.get(subNumber.charAt(1)))));
52             }
53         }
54         return number;
55     }
56 
57     /**
58      * 将汉字转换为数字
59      * 
60      * @param num
61      * @return
62      */
63     public static int parseNumber(String chnNum) {
64         chnNum = chnNum.replaceAll("(?<![一二三四五六七八九])十", "一十").replaceAll("零", "");
65         Pattern pattern = Pattern.compile("[万亿]");
66         Matcher m = pattern.matcher(chnNum);
67         BigInteger result = BigInteger.valueOf(0);
68         int index = 0;
69         while (m.find()) {
70             int end = m.end();
71             int multiple = CHN_UNITS.get(m.group().charAt(0));
72             String num = chnNum.substring(index, m.start());
73             result = result.add(getNumber(num)).multiply(BigInteger.valueOf(multiple));
74             index = end;
75         }
76         String num = chnNum.substring(index);
77         result = result.add(getNumber(num));
78         return result.intValue();
79     }
80 }

 

 还有不完善的地方，凑合能用。

posted @ 2012-12-21 22:37  lmtoo  阅读(2249)  评论(1)  编辑  收藏  举报