@GetMapping("/download/zip")    public void downloadZipFile(HttpServletResponse response) throws IOException {        response.setContentType(MediaType.APPLICATION_OCTET_STREAM.toString());        response.setHeader("Content-Disposition","attachment; filename=\"images.zip\"");        List
    
      fileNames = Arrays.asList("1.jpg","2.jpg","3.jpg");        ZipOutputStream zipOutputStream = new ZipOutputStream(response.getOutputStream());        for(String fileName : fileNames) {            ZipEntry zipEntry = new ZipEntry(fileName);            zipOutputStream.putNextEntry(zipEntry);            FileInputStream inputStream = new FileInputStream("D:/upload/"+fileName);            IOUtils.copy(inputStream,zipOutputStream);            inputStream.close();        }        zipOutputStream.closeEntry();        zipOutputStream.close();    }