JAVA获取中文汉字字符串拼音首字母，英文字符不变的工具类

    /**
     * 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);
        if(arr.length>0){
            if (arr[0] > 128) {
                try {
                    String[] temp = PinyinHelper.toHanyuPinyinStringArray(arr[0], defaultFormat);
                    if (temp != null) {
                        pybf.append(temp[0].charAt(0));
                    }
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                }
            } else {
                pybf.append(arr[0]);
            }
        }
        return pybf.toString().replaceAll("\\W", "").trim().toUpperCase();
    }

        public static void main(String[] args) {
        String str = "dW8blj104118";
        String as = getFirstSpell("|||");
        System.out.println(as);

    }