使用PinYin4J汉字转拼音

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;

/**
 * 汉字转拼音，英文字符不变
 * @version 1.0
 * 
 */
public class PinYinToolkit {
    
    /**
     * 汉字转换汉语拼音首字母，英文字符不变
     * 例如:北京--> bj
     * @param chinese 汉字
     * @return String
     */
    public static String cn2FirstSpell(String chinese){
        StringBuilder pinyin = new StringBuilder();
        char[] nameChar = chinese.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for(int i = 0; i < nameChar.length;i++){
            if(nameChar[i] > 128){
                try {
                    String[] py = PinyinHelper.toHanyuPinyinStringArray(nameChar[i],defaultFormat);
                    if(py != null){
                        pinyin.append(py[0].charAt(0));
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pinyin.append(nameChar[i]);
            }
        }
        return pinyin.toString();
    }
    
    /**
     * 汉字转换汉语拼音，英文字符不变
     * 例如:北京--> beijing
     * @param chinese 汉字
     * @return String
     */
    public static String cn2Spell(String chinese){
        StringBuilder pinyin = new StringBuilder();
        char[] nameChar = chinese.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for(int i = 0; i < nameChar.length;i++){
            if(nameChar[i] > 128){
                try {
                    String[] py = PinyinHelper.toHanyuPinyinStringArray(nameChar[i],defaultFormat);
                    if(py != null){
                        pinyin.append(py[0]);
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pinyin.append(nameChar[i]);
            }
        }
        return pinyin.toString();
    }
    
    /**
     * 拼音转换汉语拼音，拼音首字母大写，英文字符不变
     * 例如:北京--> BeiJing
     * @param chinese 汉字
     * @return String
     */
    public static String cn2SpellFirstUpperCase(String chinese){
        StringBuilder pinyin = new StringBuilder();
        char[] nameChar = chinese.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for(int i = 0; i < nameChar.length;i++){
            if(nameChar[i] > 128){
                try {
                    String[] py = PinyinHelper.toHanyuPinyinStringArray(nameChar[i],defaultFormat);
                    if(py != null){                
                        pinyin.append(py[0].substring(0, 1).toUpperCase() + py[0].substring(1));
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pinyin.append(nameChar[i]);
            }
        }
        return pinyin.toString();
    }
}