利用java如何实现一个将中文转换成拼音的功能

public static void main(String[] args) {    System.out.println(getPingYin("小龙驿站"));  }  public static String getPingYin(String str) {    char[] t1 = null;    t1 = str.toCharArray();    String[] t2 = new String[t1.length];    HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat();    t3.setCaseType(HanyuPinyinCaseType.LOWERCASE);    t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE);    t3.setVCharType(HanyuPinyinVCharType.WITH_V);    String t4 = "";    int t0 = t1.length;    try {      for (int i = 0; i < t0; i++) {        // 判断能否为汉字&#63;        if (Character.toString(t1[i]).matches("[\\u4E00-\\u9FA5]+")) {          t2 = PinyinHelper.toHanyuPinyinStringArray(t1[i], t3);// 将汉字的几种全拼都存到t2数组&#63;          t4 += t2[0];// 取出该汉字全拼的第一种读音并连接到字符串t4&#63;        } else {          // 如果不是汉字字符，间接取出字符并连接到字符串t4&#63;          t4 += Character.toString(t1[i]);        }      }    } catch (BadHanyuPinyinOutputFormatCombination e) {      e.printStackTrace();    }    return t4;