【JAVA】获取汉字拼音首字母

package zhexian.app.smartcall.Utils;

import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

public class PinYinHelper {

    private static final int[] AREA_CODE = new int[]{
            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
    };
    private static char[] initialTable = {‘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 static Map<Character, String> exceptWords = new HashMap();

    static {
        exceptWords.put(‘A‘, "庵鳌");
        exceptWords.put(‘B‘, "璧亳並侼別匂");
        exceptWords.put(‘C‘, "茌丞丒丳刅");
        exceptWords.put(‘D‘, "渎砀棣儋丟");
        exceptWords.put(‘F‘, "邡冹兝");
        exceptWords.put(‘G‘, "崮藁莞丐丱乢亁仠冮匃匄");
        exceptWords.put(‘H‘, "骅珲潢湟丆冴匢");
        exceptWords.put(‘J‘, "泾蛟暨缙旌莒鄄丌丩丮丯丼亅伋冏匊匛匞");
        exceptWords.put(‘K‘, "丂匟");
        exceptWords.put(‘L‘, "崂涞栾溧漯浏耒醴泸阆崃両刢劽啰");
        exceptWords.put(‘M‘, "渑汨丏冐冺兞冇");
        exceptWords.put(‘O‘, "瓯");
        exceptWords.put(‘P‘, "邳濮郫丕伂冸");
        exceptWords.put(‘Q‘, "喬綦衢岐朐邛丠丬亝冾兛匤");
        exceptWords.put(‘R‘, "榕刄");
        exceptWords.put(‘S‘, "泗睢沭嵊歙莘嵩鄯丄丗侺兙");
        exceptWords.put(‘T‘, "潼滕郯亣侹侻");
        exceptWords.put(‘W‘, "婺涠汶亾仼卍卐");
        exceptWords.put(‘X‘, "鑫盱浔荥淅浠亵丅伈兇");
        exceptWords.put(‘Y‘, "懿眙黟颍兖郓偃鄢晏丣亜伇偐円匜");
        exceptWords.put(‘Z‘, "梓涿诏柘秭圳伀冑刣");
    }

    public static String getPinYin(String str) {
        StringBuffer buffer = new StringBuffer(str.length());

        for (int i = 0; i < str.length(); i++) {
            buffer.append(getPinYin(str.charAt(i)));
        }
        return buffer.toString();
    }

    public static char getPinYin(char character) {

        if (character >= ‘A‘ && character <= ‘Z‘)
            return character;
        else if (character >= ‘a‘ && character <= ‘z‘)
            return (char) (character + 32);
        else if (character >= ‘0‘ && character <= ‘9‘)
            return ‘#‘;
        else {
            byte[] bytes;
            try {
                bytes = String.valueOf(character).getBytes("GBK");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
                return ‘#‘;
            }

            int area = (short) bytes[0];
            int pos = (short) bytes[1];
            int code = (area << 8 & 0xff00) + (pos & 0xff);

            for (int i = 0; i < 26; i++) {
                int max = 55290;
                if (i != 25) {
                    max = AREA_CODE[i + 1];
                }
                if (AREA_CODE[i] <= code && code < max) {
                    return initialTable[i];
                }
            }

            for (Map.Entry<Character, String> letterSet : exceptWords.entrySet()) {
                if (letterSet.getValue().indexOf(character) != -1) {
                    return letterSet.getKey();
                }
            }
            return ‘#‘;
        }
    }
}