@GetMapping("/greet")
public ResponseEntity<String> greet(@RequestParam String name) {
    return ResponseEntity.ok("Hello, " + name + "!");
}

@GetMapping("/users/{userId}")
public ResponseEntity<User> getUserById(@PathVariable Long userId) {
    User user = userService.getUserById(userId);
    return ResponseEntity.ok(user);
}

@PostMapping("/create-user")
public ResponseEntity<String> createUser(@RequestBody User user) {
    userService.createUser(user);
    return ResponseEntity.ok("User created successfully");
}

@GetMapping("/user-agent")
public ResponseEntity<String> getUserAgent(@RequestHeader("User-Agent") String userAgent) {
    return ResponseEntity.ok("User Agent: " + userAgent);
}

@PostMapping("/register")
public ResponseEntity<String> registerUser(@Validated @RequestBody UserRegistrationDTO registrationDTO) {
    // 執(zhí)行用戶注冊邏輯
    return ResponseEntity.ok("用戶注冊成功");
}

@PostMapping("/update-user")
public ResponseEntity<String> updateUser(@ModelAttribute UserUpdateDTO updateDTO) {
    userService.updateUser(updateDTO);
    return ResponseEntity.ok("User updated successfully");
}

@PostMapping("/upload")
    public ResponseEntity<String> uploadImage(@Validated @RequestPart ImageUploadDTO uploadDTO) {
        MultipartFile imageFile = uploadDTO.getImage();
        String description = uploadDTO.getDescription();
        return ResponseEntity.ok("圖片上傳成功：" + description);
    }