<dependency>
   <groupId>com.belerweb</groupId>
   <artifactId>pinyin4j</artifactId>
   <version>2.5.0</version>
 </dependency>

public class PinyinUtil {

  public static void main(String[] args) throws Exception {
    System.out.println(getPinyin("haha你笑起來真好看", " "));
    System.out.println(getPinyinInitials("你笑起來真好看"));
  }

  /**
   * 將漢字轉(zhuǎn)換為全拼
   *
   * @param text 文本
   * @param separator 分隔符
   * @return {@link String}
   */
  public static String getPinyin(String text, String separator) {
    char[] chars = text.toCharArray();
    HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
    // 設(shè)置大小寫
    format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
    // 設(shè)置聲調(diào)表示方法
    format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
    // 設(shè)置字母u表示方法
    format.setVCharType(HanyuPinyinVCharType.WITH_V);
    String[] s;
    String rs = StringUtils.EMPTY;
    try {
      StringBuilder sb = new StringBuilder();
      for (int i = 0; i < chars.length; i++) {
        // 判斷是否為漢字字符
        if (String.valueOf(chars[i]).matches("[\\u4E00-\\u9FA5]+")) {
          s = PinyinHelper.toHanyuPinyinStringArray(chars[i], format);
          if (s != null) {
            sb.append(s[0]).append(separator);
            continue;
          }
        }
        sb.append(String.valueOf(chars[i]));
        if ((i + 1 >= chars.length) || String.valueOf(chars[i + 1]).matches("[\\u4E00-\\u9FA5]+")) {
          sb.append(separator);
        }
      }
      rs = sb.substring(0, sb.length() - 1);
    } catch (BadHanyuPinyinOutputFormatCombination e) {
      e.printStackTrace();
    }
    return rs;
  }

  /**
   * 獲取漢字首字母
   *
   * @param text 文本
   * @return {@link String}
   */
  public static String getPinyinInitials(String text) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < text.length(); i++) {
      char ch = text.charAt(i);
      String[] s = PinyinHelper.toHanyuPinyinStringArray(ch);
      if (s != null) {
        sb.append(s[0].charAt(0));
      } else {
        sb.append(ch);
      }
    }
    return sb.toString();
  }
}