汉字转拼音或首字母，手写版非pinyin4j，可排除例外代码,Java代码库,德仔网

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【Java】汉字转拼音或首字母，手写版非pinyin4j，可排除例外
作者:april / 发布于2016/4/26/ 761
package com.anxin.ssk.common;  
  
import java.io.UnsupportedEncodingException;  
import java.util.HashMap;  
import java.util.Map;  
import java.util.Map.Entry;  
  
/** 
 * 取得给定汉字串的首字母串,即声母串 Title: ChineseCharToEn 
 *  
 * @author: (le.qiao) 
 * @e-mail: qiaolevip@gmail.com 
 * @myblog: <a href="http://qiaolevip.iteye.com">http://qiaolevip.iteye.com</a> 
 * @date: 2014-1-15 注：只支持GB2312字符集中的汉字 
 *  
 */  
public class LetterUtil {  
  
    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);  
                Map<String, String> exceptWords = new HashMap<String, String>();  
// 欢迎大家补充说明~<span style="font-size: 1em; line-height: 1.5;">欢迎大家补充说明~</span><span style="font-size: 1em; line-height: 1.5;">欢迎大家补充说明</span>  
                exceptWords.put("a", "庵");  
                exceptWords.put("g", "崮");  
                exceptWords.put("l", "崂");  
                exceptWords.put("j", "泾");  
                exceptWords.put("r", "榕");  
                exceptWords.put("x", "鑫");  
                exceptWords.put("y", "懿");  
                exceptWords.put("z", "梓");  
  
                for (Entry<String, String> letterSet : exceptWords.entrySet()) {  
                    if (letterSet.getValue().indexOf(chinese) != -1) {  
                        chinese = letterSet.getKey();  
                        break;  
                    }  
                }  
            }  
        }  
  
        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;  
    }  
  
    public static void main(String[] args) {  
        System.out.println("获取拼音首字母：" + LetterUtil.getAllFirstLetter("泾崂"));  
        String address = "(金浜小区)栖山路1689弄";  
        address = address.substring(address.indexOf(")") + 1);  
        System.out.println("获取拼音首字母：" + LetterUtil.getFirstLetter(address));  
    }  
}
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