package cn.bluemobi.userservice.utils;
import java.io.UnsupportedEncodingException;
public class ChineseInitalUtils {
private final static int[] areaCode = { 1601, 1637, 1833, 2078, 2274, 2302,
2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858, 4027,
4086, 4390, 4558, 4684, 4925, 5249, 5590 };
private final static String[] letters = { "a", "b", "c", "d", "e", "f",
"g", "h", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t",
"w", "x", "y", "z" };
/**
* 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
*/
public static String getAllFirstLetter(String str) {
if (str == null || str.trim().length() == 0) {
return "";
}
String _str = "";
for (int i = 0; i < str.length(); i++) {
_str = _str + getFirstLetter(str.substring(i, i + 1));
}
return _str;
}
/**
* 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
*/
public static String getFirstLetter(String chinese) {
if (chinese == null || chinese.trim().length() == 0) {
return "";
}
chinese = conversionStr(chinese, "GB2312", "ISO8859-1");
if (chinese.length() > 1) // 判断是不是汉字
{
int li_SectorCode = (int) chinese.charAt(0); // 汉字区码
int li_PositionCode = (int) chinese.charAt(1); // 汉字位码
li_SectorCode = li_SectorCode - 160;
li_PositionCode = li_PositionCode - 160;
int li_SecPosCode = li_SectorCode * 100 + li_PositionCode; // 汉字区位码
if (li_SecPosCode > 1600 && li_SecPosCode < 5590) {
for (int i = 0; i < 23; i++) {
if (li_SecPosCode >= areaCode[i]
&& li_SecPosCode < areaCode[i + 1]) {
chinese = letters[i];
break;
}
}
} else // 非汉字字符,如图形符号或ASCII码
{
chinese = conversionStr(chinese, "ISO8859-1", "GB2312");
chinese = chinese.substring(0, 1);
}
}
return chinese;
}
/**
* 字符串编码转换
*
* @param str
* 要转换编码的字符串
* @param charsetName
* 原来的编码
* @param toCharsetName
* 转换后的编码
* @return 经过编码转换后的字符串
*/
private static String conversionStr(String str, String charsetName,
String toCharsetName) {
try {
str = new String(str.getBytes(charsetName), toCharsetName);
} catch (UnsupportedEncodingException ex) {
System.out.println("字符串编码转换异常：" + ex.getMessage());
}
return str;
}
public static void main(String[] args) {
String s = getFirstLetter("吕大爷");
System.out.println(s);
}
}
