String userAgent = request.getHeader("user-agent").toLowerCase();

        if (userAgent.contains("msie") || userAgent.contains("like gecko") ) {

            // win10 ie edge 浏览器 和其他系统的ie

            fileName = URLEncoder.encode(fileName, "UTF-8");

        } else {

            // 其他

            fileName = new String(fileName.getBytes("utf-8"), "iso-8859-1");

        }