取中文字符串拼音首字母工具类
以前项目中用到的取中文字符串拼音首字母方法。只支持GB2312汉字。
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package cn.fiyo.base.util;import java.io.UnsupportedEncodingException;/** * 取得给定汉字串的首字母串,即声母串 * <p>注：只支持GB2312字符集中的汉字</p> */public final class PinYinUtils{ private final static int[] li_SecPosValue = { 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[] lc_FirstLetter = { "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,即声母串 * * @param str 给定汉字串 * @return 声母串 */ 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; } /** * 取得给定汉字的首字母,即声母 * * @param chinese 给定的汉字 * @return 给定汉字的声母 */ 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 >= li_SecPosValue[i] && li_SecPosCode < li_SecPosValue[i + 1]) { chinese = lc_FirstLetter[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; }}?