因此，當我為用戶更新資料時，我遇到了一個錯誤，即使我已經在資料庫中為用戶上傳了圖像，它也想再次上傳圖像。誰能告訴我如何在不上傳圖像的情況下保存用戶，但上傳的圖像保留在我的資料庫中？
錯誤是java.IOException：無法儲存映像檔：
由以下原因引起：java.nio.file.DirectoryNotEmptyException：profile-image/4
這是我的控制器
@PostMapping("/profile/save")
public String saveProfile(Profile profile, Model model, @RequestParam("image") MultipartFile multipartFile,@RequestParam(value="userId", required=false) Long userId) throws IOException {
profile.setUser(userRepo.findById(userId).get());
String fileName = StringUtils.cleanPath(multipartFile.getOriginalFilename()) ;
String uploadDir - "profile-image/"+ profile.getId();
FileUploadUtil.saveFile(uploadDir, fileName, multipartFile);
profile.setProfileImg(fileName);
profileService.saveProfile(profile);
return "redirect:/user/profile"; 
您的
FileUploadUtil類別中存在錯誤。僅當該目錄不存在存在時才應建立該目錄：public static void saveFile(String uploadir, String fileName, MultipartFile multipartFile) throws IOException { Path uploadPath = Paths.get(uploadDir); if (!Files.exists(uploadPath)) { Files.createDirectories(uploadPath); } try (InputStream inputStream = multipartFile.getInputStream()) { Path filePath = uploadPath. resolve(fileName); System.out.printIn(filePath.toFile()-getAbsolutePath()+"File Path*******"); Files.copy(inputStream, filePath, StandardCopyOption.REPLACE_EXISTING); } catch (IOException ioe) { throw new IOException("Could not save image file: " + fileName, ioe); } }