Question

java 获取汉字首字母

如果我想要获取 百度知道 的首字母， 也就是bdzd 该怎么做

Answer 1

import java.io.UnsupportedEncodingException;
2
3 /**
4 * 取得给定汉字串的首字母串,即声母串
5 *
6 * 注：只支持GB2312字符集中的汉字
7 */
8 class ChineseInital {
9 private final static int[] areaCode = { 1601, 1637, 1833, 2078, 2274,
10 2302, 2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858,
11 4027, 4086, 4390, 4558, 4684, 4925, 5249, 5590 };
12 private final static String[] letters = { "a", "b", "c", "d", "e",
13 "f", "g", "h", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",
14 "t", "w", "x", "y", "z" };
15
16 /**
17 * 取得给定汉字串的首字母串
18 * @param str 给定汉字串
19 * @return 所有字符的首字母
20 */
21 public static String getAllFirstLetter(String str) {
22 if (str == null || str.trim().length() == 0) {
23 return "";
24 }
25
26 String _str = "";
27 for (int i = 0; i < str.length(); i++) {
28 _str = _str + this.getFirstLetter(str.substring(i, i + 1));
29 }
30
31 return _str;
32 }
33
34 /**
35 * 取得给定汉字的首字母,即声母
36 * @param chinese 给定的汉字
37 * @return 给定汉字的声母
38 */
39 public static String getFirstLetter(String chinese) {
40 if (chinese == null || chinese.trim().length() == 0) {
41 return "";
42 }
43 chinese = this.conversionStr(chinese, "GB2312", "ISO8859-1");
44
45 if (chinese.length() > 1) // 判断是不是汉字
46 {
47 int li_SectorCode = (int) chinese.charAt(0); // 汉字区码
48 int li_PositionCode = (int) chinese.charAt(1); // 汉字位码
49 li_SectorCode = li_SectorCode - 160;
50 li_PositionCode = li_PositionCode - 160;
51 int li_SecPosCode = li_SectorCode * 100 + li_PositionCode; // 汉字区位码
52 if (li_SecPosCode > 1600 && li_SecPosCode < 5590) {
53 for (int i = 0; i < 23; i++) {
54 if (li_SecPosCode >= areaCode[i]
55 && li_SecPosCode < areaCode[i + 1]) {
56 chinese = letters[i];
57 break;
58 }
59 }
60 } else // 非汉字字符,如图形符号或ASCII码
61 {
62 chinese = this.conversionStr(chinese, "ISO8859-1", "GB2312");
63 chinese = chinese.substring(0, 1);
64 }
65 }
66
67 return chinese;
68 }
69
70 /**
71 * 字符串编码转换
72 * @param str 要转换编码的字符串
73 * @param charsetName 原来的编码
74 * @param toCharsetName 转换后的编码
75 * @return 经过编码转换后的字符串
76 */
77 private static String conversionStr(String str, String charsetName,String toCharsetName) {
78 try {
79 str = new String(str.getBytes(charsetName), toCharsetName);
80 } catch (UnsupportedEncodingException ex) {
81 System.out.println("字符串编码转换异常：" + ex.getMessage());
82 }
83 return str;
84 }
85
86 }

Answer 2

参考即可：
http://jingyan.baidu.com/article/84b4f565da5dc960f6da32f5.html