import java.io.UnsupportedEncodingException;

/**
* 获取拼音码
*
* @author xmj
*
*/
public class GetPinyinCode {

private final static char\[\] en\_char\_Upper = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'O',  
        'P', 'Q', 'R', 'S', 'T', 'W', 'X', 'Y', 'Z' };  
private final static int\[\] posValue = { 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 int\[\] posValue2 = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 49062,  
        49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52980, 53689, 54481, 55290 };

/\*\*  
 \* 获取字符串的大小写拼音码，true为大写  
 \*  
 \* @param strChinese  
 \* @param bUpCase  
 \* @return  
 \*/  
public static String getPYIndexStr(String strChinese, boolean bUpCase) {  
    try {  
        StringBuffer buffer = new StringBuffer();

        byte\[\] b = strChinese.getBytes("GBK");

        int i = 0;  
        while (i < b.length) {  
            if ((b\[i\] & 0xFF) > 128) {  
                int char1 = b\[(i++)\] & 0xFF;  
                char1 <<= 8;  
                int chart = char1 + (b\[i\] & 0xFF);  
                buffer.append(getPYIndexChar((char) chart, bUpCase));  
            } else {  
                char c = (char) b\[i\];  
                if (!Character.isJavaIdentifierPart(c))  
                    c = '?';  
                buffer.append(c);  
            }  
            i++;  
        }  
        return buffer.toString();  
    } catch (Exception e) {  
        System.out.println("取中文拼音有错" + e.getMessage());  
    }  
    return null;  
}

/\*\*  
 \* 获取字符  
 \*  
 \* @param strChinese  
 \* @param bUpCase  
 \* @return  
 \*/  
private static char getPYIndexChar(char strChinese, boolean bUpCase) {  
    int charGBK = strChinese;  
    char result = '~';  
    if (charGBK > 45216 && charGBK < 55290) {  
        for (int i = 0; i < 23; i++) {  
            if (charGBK >= posValue2\[i\] && charGBK < posValue2\[i + 1\]) {  
                result = en\_char\_Upper\[i\];  
                break;  
            }  
        }  
    }  
    if (!bUpCase)  
        result = Character.toLowerCase(result);  
    return result;  
}

/\*\*  
 \* 获取字符串的大小写拼音码，true为大写  
 \*  
 \* @param str  
 \* @param bUpCase  
 \* @return  
 \*/  
public static String getPYIndexStr2(String strChinese, boolean bUpCase) {  
    if (strChinese == null || strChinese.trim().length() == 0) {  
        return "";  
    }  
    String result = "";  
    for (int i = 0; i < strChinese.length(); i++) {  
        try {  
            result = result + getFirstLetter(strChinese.substring(i, i + 1), bUpCase);  
        } catch (UnsupportedEncodingException e) {  
            e.printStackTrace();  
        }  
    }  
    return result;  
}

/\*\*  
 \* 取得给定汉字的首字母,true为大写  
 \*  
 \* @param chinese  
 \* @param bUpCase  
 \* @return  
 \* @throws UnsupportedEncodingException  
 \*/  
private static String getFirstLetter(String strChinese, boolean bUpCase) throws UnsupportedEncodingException {  
    if (strChinese == null || strChinese.trim().length() == 0) {  
        return "";  
    }  
    strChinese = new String(strChinese.getBytes("GB2312"), "ISO8859-1");  
    if (strChinese.length() > 1) {  
        int ch\_area\_code = (int) strChinese.charAt(0) - 160;// 汉字区码  
        int ch\_bit\_code = (int) strChinese.charAt(1) - 160; // 汉字位码  
        int ch\_code = ch\_area\_code \* 100 + ch\_bit\_code; // 汉字区位码  
        if (ch\_code > 1600 && ch\_code < 5590) {  
            for (int i = 0; i < 23; i++) {  
                if (ch\_code >= posValue\[i\] && ch\_code < posValue\[i + 1\]) {  
                    char a = en\_char\_Upper\[i\];  
                    if (!bUpCase)  
                        a = Character.toLowerCase(a);  
                    strChinese = String.valueOf(a);  
                    break;  
                }  
            }  
        } else {  
            strChinese = new String(strChinese.getBytes("ISO8859"), "GB2312");  
            strChinese = strChinese.substring(0, 1);  
        }  
    }  
    return strChinese;  
}

}

测试一下