Java用pinyin4j库实现汉字转拼音

public class PingYinUtil {
    /**
     * 将字符串中的中文转化为拼音,其他字符不变
     * 
     * @param inputString
     * @return
     */
    public static String getPingYin(String inputString) {
        HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
        format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
        format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        format.setVCharType(HanyuPinyinVCharType.WITH_V);

        char[] input = inputString.trim().toCharArray();
        String output = "";

        try {
            for (int i = 0; i < input.length; i++) {
                if (java.lang.Character.toString(input[i]).matches(
                        "[\\u4E00-\\u9FA5]+")) {
                    String[] temp = PinyinHelper.toHanyuPinyinStringArray(
                            input[i], format);
                    output += temp[0];
                } else
                    output += java.lang.Character.toString(input[i]);
            }
        } catch (BadHanyuPinyinOutputFormatCombination e) {
            e.printStackTrace();
        }
        return output;
    }

    /**
     * 汉字转换位汉语拼音首字母，英文字符不变
     * 
     * @param chines
     *            汉字
     * @return 拼音
     */
    public static String converterToFirstSpell(String chines) {
        String pinyinName = "";
        char[] nameChar = chines.toCharArray();
        HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
        defaultFormat.setCaseType(HanyuPinyinCaseType.UPPERCASE);
        defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        for (int i = 0; i < nameChar.length; i++) {
            if (nameChar[i] > 128) {
                try {
                    pinyinName += PinyinHelper.toHanyuPinyinStringArray(
                            nameChar[i], defaultFormat)[0].charAt(0);
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pinyinName += nameChar[i];
            }
        }
        return pinyinName;
    }
}

    String aa="中国";
    System.out.println(getPingYin(aa));
    System.out.println(converterToFirstSpell(aa));
    输出内容：
    zhongguo
    ZG