Java实现端到端多文件上传

        新需求，公司需要将一体机的多张图片通过java后端上传到远程服务器的后台管理系统。

@GetMapping("uploadImg")
public static String uploadImg(){
        // 读取图片
        String imageLocation1 = "D:\1.png";
        String imageLocation2 = "D:\2.png";
        String imageLocation3 = "D:\3.png";
        FileSystemResource fileSystemResource1 = new FileSystemResource(imageLocation1);
        FileSystemResource fileSystemResource2 = new FileSystemResource(imageLocation2);
        FileSystemResource fileSystemResource3 = new FileSystemResource(imageLocation3);
        MultiValueMap form = new linkedMultiValueMap<>();
        form.add("file", fileSystemResource1);
        form.add("file", fileSystemResource2);
        form.add("file", fileSystemResource3);

        // 上传图片  YmlValueConfig.getHttpUrl()：第三方服务器地址
        String url = YmlValueConfig.getHttpUrl() + "/file/uploadFile";
        String res = RestTemplateUtils.httpUploadImg(url, form);
        log.info(res);
        return res;
}

    //上传文件
    @PostMapping("/file/uploadFile")
    @ResponseBody
    public Result uploadFile(@RequestParam("file")  MultipartFile[] fileList ) {
        log.info("fileList:[{}]", fileList);
        String filePathName = null;
        try {
            File dir = new File(imagePath);
            if (!dir.exists()) {
                dir.mkdirs();
                dir.setWritable(true, false);
            }
            for (MultipartFile mfile : fileList) {
            String fileName = mfile.getOriginalFilename();
            filePathName = imagePath + fileName;
            FileCopyUtils.copy(mfile.getBytes(), new File(filePathName));
            }
        } catch (IOException e) {
            log.error("upload error:[{}]", e.getMessage());
            return Result.success(HttpStatus.ERROR, "上传失败");
        }
        return Result.success(HttpStatus.SUCCESS, "上传成功");
    }

简单实现，仅供参考