java 汉字转换为拼音

网上找的，自己备个份，以便以后使用

package com.csidc.as.util;

import java.io.UnsupportedEncodingException;

import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;

/**
*
* 功能作用:汉字转换为拼音
*
* @version: 1.0
* @create date: 2013-2-17
* @author: lili
* @remark:
*/
public class ChineseToSpell {

/**
     * 获取汉字串拼音首字母，英文字符不变
     *
     * @param chinese 汉字串
     * @return 汉语拼音首字母
     */
    public static String cn2FirstSpell(String chinese) {
            StringBuffer pybf = new StringBuffer();
            char[] arr = chinese.toCharArray();
            HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
            defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            for (int i = 0; i < arr.length; i++) {
                    if (arr[i] > 128) {
                            try {
                                    String[] _t = PinyinHelper.toHanyuPinyinStringArray(arr[i], defaultFormat);
                                    if (_t != null) {
                                            pybf.append(_t[0].charAt(0));
                                    }
                            } catch (BadHanyuPinyinOutputFormatCombination e) {
                                    e.printStackTrace();
                            }
                    } else {
                            pybf.append(arr[i]);
                    }
            }
            return pybf.toString().replaceAll("\\W", "").trim();
    }

    /**
     * 获取汉字串拼音，英文字符不变
     *
     * @param chinese 汉字串
     * @return 汉语拼音
     */
    public static String cn2Spell(String chinese) {
            StringBuffer pybf = new StringBuffer();
            char[] arr = chinese.toCharArray();
            HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
            defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
            defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            for (int i = 0; i < arr.length; i++) {
                    if (arr[i] > 128) {
                            try {
                                    pybf.append(PinyinHelper.toHanyuPinyinStringArray(arr[i], defaultFormat)[0]);
                            } catch (BadHanyuPinyinOutputFormatCombination e) {
                                    e.printStackTrace();
                            }
                    } else {
                            pybf.append(arr[i]);
                    }
            }
            return pybf.toString();
    }

    public static void main(String[] args) throws UnsupportedEncodingException {
            String x = "李建川";
            System.out.println(cn2FirstSpell(x)); //拼音首字母
            System.out.println(cn2Spell(x)); //获取汉字串拼音
    }

}