获取汉字串拼音字母，英文字符不变

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;

public class PinYinUtil {

	/**
	 * 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 getFirstSpell(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[] temp = PinyinHelper.toHanyuPinyinStringArray(
							arr[i], defaultFormat);
					if (temp != null) {
						pybf.append(temp[0].charAt(0));
					}
				} catch (BadHanyuPinyinOutputFormatCombination e) {
					e.printStackTrace();
				}
			} else {
				pybf.append(arr[i]);
			}
		}
		return pybf.toString().replaceAll("\\W", "").trim();
	}

	public static char getCharacterPinYin(char c) {
		HanyuPinyinOutputFormat format = null;
		format = new HanyuPinyinOutputFormat();
		format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
		String[] pinyin = null;
		try {
			pinyin = PinyinHelper.toHanyuPinyinStringArray(c, format);
		} catch (BadHanyuPinyinOutputFormatCombination e) {
			e.printStackTrace();
		}
		// 如果c不是汉字，toHanyuPinyinStringArray会返回null
		if (pinyin == null) {
			if (Character.isLetter(c)) {
				return Character.toUpperCase(c);
			}
			return '~';
		}
		// 只取一个发音，如果是多音字，仅取第一个发音
		return pinyin[0].toUpperCase().charAt(0);
	}

	/**
	 * 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 getFullSpell(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();
				} catch (Exception e) {
					e.printStackTrace();
				}
			} else {
				pybf.append(arr[i]);
			}
		}
		return pybf.toString();
	}
}