在Java中如何开发简易个人相册应用_相册应用开发技巧

@PostMapping("/upload")
public String handleUpload(@RequestParam("photo") MultipartFile file,
                           @RequestParam("description") String description,
                           Model model) {
    if (file.isEmpty()) {
        model.addAttribute("message", "请选择文件");
        return "upload";
    }

    String uploadDir = "uploads/";
    String fileName = System.currentTimeMillis() + "_" + file.getOriginalFilename();
    Path path = Paths.get(uploadDir + fileName);

    try {
        // 确保目录存在
        Files.createDirectories(Paths.get(uploadDir));
        // 保存文件
        Files.copy(file.getInputStream(), path, StandardCopyOption.REPLACE_EXISTING);

        // 保存到数据库
        Photo photo = new Photo();
        photo.setFileName(fileName);
        photo.setDescription(description);
        photo.setUploadTime(new Date());
        photoRepository.save(photo);

    } catch (IOException e) {
        model.addAttribute("message", "上传失败：" + e.getMessage());
        return "upload";
    }

    return "redirect:/gallery";
}

Thumbnails.of(file.getInputStream())
    .size(200, 200)
    .toFile(thumbPath.toFile());