Servlet解决IE下载的文件中中文乱码问题

String fileName;
        String userAgent = request.getHeader("user-agent").toLowerCase();
        if(userAgent.contains("msie") || userAgent.contains("like gecko")){//解决IE下载的文件中中文乱码问题
            fileName = URLEncoder.encode(pdfFileName, "UTF-8");  
        }else{
            fileName = new String(pdfFileName.getBytes(), "iso8859-1");
        }

        //将文件流返回给客户端
        response.setContentType("application/octet-stream");
        response.setHeader("Content-Disposition", "attachment; filename=" + fileName);
        try (ServletOutputStream sos = response.getOutputStream()) {
            sos.write(result);
        }