Lỗi valid trong java springboot

[Thanh_Nam_Truong (Thành Nam Trương)]

mọi người cho em hỏi , sao valid của em nó ko hoạt động như mong muốn ạ ?

ở console thì in ra
Resolved [org.springframework.web.bind.MethodArgumentNotValidException: Validation failed for argument [0]

phía postman với dạng json là

{
   "email":null,
   "numberPhone":"test",
   "userName":"test",
   "password":"test"
}

và trả về status 403 bidden

@RestController
@RequestMapping("/api/v1/public/auth")
public class SignUpAPI {

    @Autowired
    @Qualifier("AuthenticationImplementation")
    AuthenticationServiceAPI authenticationServiceAPI;

    @PostMapping("/signup")
    public ResponseEntity<?> signup(@Valid @RequestBody SignupRequest signupRequest) {
        return authenticationServiceAPI.signUp(signupRequest);
    }
}



@Data
public class SignupRequest {

    @NotNull(message = "Email is null")
    @NotBlank(message = "Email is blank")
    private String email;

    private String numberPhone;
    private String userName;
    private String password;
    private Set<String> listRoles;
}


public interface AuthenticationServiceAPI {

    ResponseEntity<String> signUp( SignupRequest signupRequest);

    LoginResponse login(LoginRequest loginRequest);
}


@Service("AuthenticationImplementation")
@Validated
public class AuthenticationImplementation implements AuthenticationServiceAPI {
    @Autowired
    private AuthenticationManager authenticationManager;
    @Autowired
    private JsonWebTokenProvider jsonWebTokenProvider;
    @Autowired
    private PasswordEncoder passwordEncoder;
    @Autowired
    private UserService userService;
    @Autowired
    private RoleService roleService;

    @Override
    public ResponseEntity<String> signUp( SignupRequest signupRequest) {


        if (userService.existsByUsername(signupRequest.getUserName())) {
            return ResponseEntity.badRequest().body("Name is duplicated");
        }

        if (userService.existsBynumberPhone(signupRequest.getNumberPhone())) {
            return ResponseEntity.badRequest().body("Number phone is duplicated");

        }

        if (userService.existsByEmail(signupRequest.getEmail())) {
            return ResponseEntity.badRequest().body("Email is duplicated");

        }
        Users user = new Users();

        user.setEmail(signupRequest.getEmail());
        user.setNumberPhone(signupRequest.getNumberPhone());
        user.setUsername(signupRequest.getUserName());
        user.setPassword(passwordEncoder.encode(signupRequest.getPassword()));

        Set<Roles> listRoles = new HashSet<>();
        Roles userRole = roleService.findByRoleName(ERole.ROLE_USER).orElseThrow(() -> new RuntimeException("Error : Role user is not found"));

        listRoles.add(userRole);

        user.setListRoles(listRoles);

        userService.save(user);
        return ResponseEntity.ok(new String("User signed up successfully!"));
    }
    @Override
    public LoginResponse login(LoginRequest loginRequest) {

        // authenticate requested user information
        Authentication authentication = authenticationManager.authenticate(
                new UsernamePasswordAuthenticationToken(
                        loginRequest.getUsername(),
                        loginRequest.getPassword()
                )
        );

        /**
         * If no exception occurs, the information is valid
         * Set authentication information into Security Context
         */
        SecurityContextHolder.getContext().setAuthentication(authentication);
        CustomUserDetails customUserDetails = (CustomUserDetails) authentication.getPrincipal();

        // return jwt for user
        String jwt = jsonWebTokenProvider.generateToken((CustomUserDetails) authentication.getPrincipal());

        List<String> listRoles = customUserDetails.getAuthorities().stream()
                .map(item -> item.getAuthority()).collect(Collectors.toList());

        /**
         * special line code for java swing
         */
        PasswordManager.getInstance().setPassword(customUserDetails.getPassword());

        return new LoginResponse(jwt,
                "Bearer",
                customUserDetails.getUser().getEmail(),
                customUserDetails.getUser().getNumberPhone(),
                customUserDetails.getUsername(),
                listRoles.toString());
    }

    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Map<String, String> handleValidationExceptions(
            MethodArgumentNotValidException ex) {
        Map<String, String> errors = new HashMap<>();
        ex.getBindingResult().getAllErrors().forEach((error) -> {
            String fieldName = ((FieldError) error).getField();
            String errorMessage = error.getDefaultMessage();
            errors.put(fieldName, errorMessage);
        });
        return errors;
    }
}

em có thử sang 1 api khác , gọi trực tiếp ko thông qua interface nào và valid thành công

nhưng riêng code trên thì bị lỗi như trên , mong mọi người giúp đỡ ạ

[bienjouer]

Sao em không bỏ hết code của em vào thẻ code?