问题：

业务代码：

Controller

 @PostMapping("/batchDownload")
public void batchDownload(@RequestBody PassportDTO passportDTO, HttpServletResponse response) {
    passportService.batchDownload(passportDTO, response);
}  

Service

 public void batchDownload(PassportDTO passportDTO, HttpServletResponse response) {
        String zipName = "通行证" + ".zip";
        response.setHeader("content-type", "application/octet-stream");
        response.setHeader("Content-disposition", "attachment;filename=" + zipName);
        response.setCharacterEncoding("utf-8");
        ZipOutputStream zipOutputStream = null;

        try {
            zipOutputStream = new ZipOutputStream(response.getOutputStream());
            for (String pictureUrl : passportDTO.getPictureUrls()) {
                String fileName = pictureUrl.substring(pictureUrl.lastIndexOf("/") + 1);
                zipOutputStream.putNextEntry(new ZipEntry(fileName));

                URL url = new URL(pictureUrl);
                InputStream inputStream = new DataInputStream(url.openStream());

                byte[] buff = new byte[1024];
                int len;
                while ((len = inputStream.read(buff)) != -1) {
                    zipOutputStream.write(buff, 0, len);
                }
                zipOutputStream.closeEntry();
                inputStream.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (zipOutputStream != null) {
                try {
                    zipOutputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }  

说明：

通过图片路径创建输入流获取图片数据：

  File file = new File("/test/temp/vehicles/" + pictureUrl);
 InputStream inputStream = new FileInputStream(file);  

通过图片URL路径创建输入流获取图片数据：

 URL url = new URL(pictureUrl);
InputStream inputStream = new DataInputStream(url.openStream());  

路漫漫其修远兮，吾将上下而求索

译文：在追寻真理方面，前方的道路还很漫长，但我将百折不挠，不遗余力地去追求和探索。

如果您有什么好的想法与方法，欢迎在评论区留言，我们一起讨论~