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Victor

•Created by Victor on 12/7/2024 in #java-help

Best Design Approach

So im making an API for a marketplace and i have different kinds of listings (footwear, clothes and accessories) where the enum attributes "subcategory" and "size" would change based on what kind of listing it is, what would be the best design approach for creating these listings? inheritance? factory? Thanks

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•Created by Victor on 7/23/2024 in #java-help

SPRING: validation returning error 500 instead of 400

Why does the validation return an internal server error instead of a bad request when the request does not pass validation? I've seen some videos about validation and in the examples it returned a bad request but in my application its returning error 500, here is my model class

@Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    //@Column(nullable = false, unique = true)
    @NotBlank
    private String username;
    @Column(nullable = false, unique = true)
    private String email;

@Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    //@Column(nullable = false, unique = true)
    @NotBlank
    private String username;
    @Column(nullable = false, unique = true)
    private String email;

the post method

@PostMapping
    public ResponseEntity<UserModel> postUser(@Valid
                                              @RequestBody UserDTO userDTO) {

        var user = new UserModel();
        BeanUtils.copyProperties(userDTO, user);
        return ResponseEntity.status(HttpStatus.CREATED).body(userService.save(user));

    }

@PostMapping
    public ResponseEntity<UserModel> postUser(@Valid
                                              @RequestBody UserDTO userDTO) {

        var user = new UserModel();
        BeanUtils.copyProperties(userDTO, user);
        return ResponseEntity.status(HttpStatus.CREATED).body(userService.save(user));

    }

and this is the error when i send a request with a blank username: jakarta.validation.ConstraintViolationException: Validation failed for classes [com.vss.wardrober.models.UserModel] during persist time for groups [jakarta.validation.groups.Default, ] List of constraint violations:[ ConstraintViolationImpl{interpolatedMessage='must not be blank', propertyPath=username, rootBeanClass=class com.vss.wardrober.models.UserModel, messageTemplate='{jakarta.validation.constraints.NotBlank.message}'} ]

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