Java_获取汉字的汉语拼音首字母Java版（转）

public class GetFirstLetter {   
  
 private static final int GB_SP_DIFF = 160;   
 private static final int[] secPosvalueList = {   
       1601, 1637, 1833, 2078, 2274, 2302, 2433, 2594, 2787,   
       3106, 3212, 3472, 3635, 3722, 3730, 3858, 4027, 4086,   
       4390, 4558, 4684, 4925, 5249, 5600};   
 private static final char[] firstLetter = {   
       'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j',   
       'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',   
       't', 'w', 'x', 'y', 'z'};   
  
 public static String getFirstLetter(String oriStr) {   
     String str = oriStr.toLowerCase();   
     StringBuffer buffer = new StringBuffer();   
     char ch;   
     char[] temp;   
     for (int i = 0; i < str.length(); i++) {    
       ch = str.charAt(i);   
       temp = new char[] {   
           ch};   
       byte[] uniCode = new String(temp).getBytes();   
       if (uniCode[0] < 128 && uniCode[0] > 0) {   
         buffer.append(temp);   
       }   
       else {   
         buffer.append(convert(uniCode));   
       }   
     }   
     return buffer.toString().substring(0,1);   
 }   
  
 private static char convert(byte[] bytes) {   
  
     char result = '-';   
     int secPosvalue = 0;   
     int i;   
     for (i = 0; i < bytes.length; i++) {   
       bytes[i] -= GB_SP_DIFF;   
     }   
     secPosvalue = bytes[0] * 100 + bytes[1];   
     for (i = 0; i < 23; i++) {   
       if (secPosvalue >= secPosvalueList[i] &&   
           secPosvalue < secPosvalueList[i + 1]) {   
         result = firstLetter[i];   
         break;   
       }   
     }   
     return result;   
 }   
    
 public static void main(String s[]){   
     
  System.out.print(getFirstLetter("好"));   
 }