utf-8字符集昵称含有特殊表情处理

使用以下两个处理方法即可

 /**
     * @param str 待转换字符串
     * @return 转换后字符串
     * @throws UnsupportedEncodingException exception
     * @Description 将字符串中的emoji表情转换成可以在utf-8字符集数据库中保存的格式
     */
    public static String emojiConvert1(String str) throws UnsupportedEncodingException {
        String patternString = "([\\x{10000}-\\x{10ffff}\ud800-\udfff])";
        Pattern pattern = Pattern.compile(patternString);
        Matcher matcher = pattern.matcher(str);
        StringBuffer sb = new StringBuffer();
        while (matcher.find()) {
            try {
                matcher.appendReplacement(
                        sb,
                        "[["
                                + URLEncoder.encode(matcher.group(1),
                                "UTF-8") + "]]");
            } catch (UnsupportedEncodingException e) {
                throw e;
            }
        }
        matcher.appendTail(sb);
        return sb.toString();
    }

    /**
     * @param str 转换后的字符串
     * @return 转换前的字符串
     * @throws UnsupportedEncodingException exception
     * @Description 还原utf8数据库中保存的含转换后emoji表情的字符串
     */
    public static String emojiRecovery2(String str) throws UnsupportedEncodingException {
        String patternString = "\\[\\[(.*?)\\]\\]";
        Pattern pattern = Pattern.compile(patternString);
        Matcher matcher = pattern.matcher(str);

        StringBuffer sb = new StringBuffer();
        while (matcher.find()) {
            try {
                matcher.appendReplacement(sb,
                        URLDecoder.decode(matcher.group(1), "UTF-8"));
            } catch (UnsupportedEncodingException e) {
                throw e;
            }
        }
        matcher.appendTail(sb);
        return sb.toString();
    }