取汉字首母

  [color=red]//c#版本[/color]
   public class GetChineseFirstNum
    {
        //获取汉字首字母
        public static string GetChineseSpell(string strText)
        {
            int len = strText.Length;
            string myStr = "";
            for (int i = 0; i < len; i++)
            {
                myStr += getSpell(strText.Substring(i, 1));
            }
            return myStr;
        }

        private static string getSpell(string cnChar)
        {
            byte[] arrCN = Encoding.Default.GetBytes(cnChar);
            if (arrCN.Length > 1)
            {
                int area = (short)arrCN[0];
                int pos = (short)arrCN[1];
                int code = (area << 8) + pos;
                int[] areacode = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 48119, 49062, 49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52698, 52698, 52980, 53689, 54481 };
                for (int i = 0; i < 26; i++)
                {
                    int max = 55290;
                    if (i != 25) max = areacode[i + 1];
                    if (areacode[i] <= code && code < max)
                    {
                        return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
                    }
                }
                return "*";
            }
            else
            {
                return cnChar;
            }
        }
    }


  

[color=red]   //  java 版本[/color]
  public class Test {
	// 字母Z使用了两个标签，这里有２７个值
	// i, u, v都不做声母, 跟随前面的字母
	private char[] chartable = { '啊', '芭', '擦', '搭', '蛾', '发', '噶', '哈', '哈',
			'击', '喀', '垃', '妈', '拿', '哦', '啪', '期', '然', '撒', '塌', '塌', '塌',
			'挖', '昔', '压', '匝', '座' };

	private char[] alphatable = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I',

	'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
			'Y', 'Z' };

	private int[] table = new int[27];

	// 初始化
	{
		for (int i = 0; i < 27; ++i) {
			table[i] = gbValue(chartable[i]);
		}
	}

	// 主函数,输入字符,得到他的声母,
	// 英文字母返回对应的大写字母
	// 其他非简体汉字返回 '0'

	public char Char2Alpha(char ch) {

		if (ch >= 'a' && ch <= 'z')
			return (char) (ch - 'a' + 'A');
		if (ch >= 'A' && ch <= 'Z')
			return ch;

		int gb = gbValue(ch);
		if (gb < table[0])
			return '0';

		int i;
		for (i = 0; i < 26; ++i) {
			if (match(i, gb))
				break;
		}

		if (i >= 26)
			return '0';
		else
			return alphatable[i];
	}

	// 根据一个包含汉字的字符串返回一个汉字拼音首字母的字符串
	public String String2Alpha(String SourceStr) {
		String Result = "";
		int StrLength = SourceStr.length();
		int i;
		try {
			for (i = 0; i < StrLength; i++) {
				Result += Char2Alpha(SourceStr.charAt(i));
			}
		} catch (Exception e) {
			Result = "";
		}
		return Result;
	}

	private boolean match(int i, int gb) {
		if (gb < table[i])
			return false;

		int j = i + 1;

		// 字母Z使用了两个标签
		while (j < 26 && (table[j] == table[i]))
			++j;

		if (j == 26)
			return gb <= table[j];
		else
			return gb < table[j];

	}

	// 取出汉字的编码
	private int gbValue(char ch) {
		String str = new String();
		str += ch;
		try {
			byte[] bytes = str.getBytes("GB2312");
			if (bytes.length < 2)
				return 0;
			return (bytes[0] << 8 & 0xff00) + (bytes[1] & 0xff);
		} catch (Exception e) {
			return 0;
		}

	}

	public static void main(String[] args) {
		Test obj1 = new Test();
 
		System.out.println(obj1.String2Alpha("刘"));
                   // return L 		
 
	}

}