Java MultipartFile Controller for medium article

controller.java

@RestController
@RequestMapping("/users")
public class UserController {

    UserService userService;

    @Autowired
    public UserController(UserService userService) {
        this.userService = userService;
    }
    
    @PostMapping({"/", ""})
    public String post(@RequestPart("request") UserCreateRequest request, @RequestPart("file") MultipartFile file) {
        // some application logic here
        userService.create(request); 

        return file.getOriginalFilename().replaceAll(" ", "").trim();
    }
}