pinyin4j，将汉字转拼音，这里提供一个工具类。

public class PinYinUtil {   /**    * 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;   }   /**         * 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();         }     }