这里基本和SpringBoot2上传单个文件的方式相同,只不过文件变成了多个

@RestController
public class FileUploadController2 {

  private DateTimeFormatter dateFormat = DateTimeFormatter.ofPattern("/yyyy/MM/dd/", Locale.CHINA);

  @PostMapping("/upload")
  public List<String> upload(MultipartFile[] multipartFiles, HttpServletRequest request) {
    var files = new ArrayList<String>(multipartFiles.length);

    var realPath = request.getServletContext().getRealPath("/");
    var format = dateFormat.format(LocalDate.now());
    var path = realPath + format;
    System.out.println(path);
    var file = new File(path);
    if (!file.exists()) {
      file.mkdirs();
    }
    try {
      for (MultipartFile multipartFile : multipartFiles) {
        var originalFilename = multipartFile.getOriginalFilename();
        var newName =
            UUID.randomUUID() + originalFilename.substring(originalFilename.lastIndexOf("."));

        multipartFile.transferTo(new File(file, newName));
        var s =
            request.getScheme()
                + "://"
                + request.getServerName()
                + ":"
                + request.getServerPort()
                + format
                + newName;
        files.add(s);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
    return files;
  }
}

Q.E.D.