英文:
SpringBoot annotation @Validated
问题
验证不会调用ItemDTO字段。
如何使检查对ItemDTO字段起作用？
如果我完全从请求中移除ItemDTO部分，那么NotNull验证将起作用，但不会对内部ItemDTO字段进行验证。
SpringBoot 2.1.9.RELEASE
@RestController
@RequestMapping("/items")
@RequiredArgsConstructor
public class ItemController {
private final ItemLimitService itemLimitService;
@PostMapping(value = "", consumes = MediaType.APPLICATION_JSON_UTF8_VALUE, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ItemLimitDTO> create(@Validated(New.class) @RequestBody ItemLimitDTO limitDTO) {
ItemLimit limit = itemLimitService.create(limitDTO);
return ResponseEntity.status(HttpStatus.CREATED).body(limit);
}
}
public class ItemLimitDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
@NotNull(groups = {New.class, Exist.class})
private ItemDTO item;
}
public class ItemDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
}
英文:
Validation is not called for ItemDTO fields.
How do I make the check work for ItemDTO fields?
If I completely remove the ItemDTO section from the request, then NotNull validation will work, but validation is not called for internal ItemDTO fields.
SpringBoot 2.1.9.RELEASE
@RestController
@RequestMapping("/items")
@RequiredArgsConstructor
public class ItemController {
private final ItemLimitService itemLimitService;
@PostMapping(value = "", consumes = MediaType.APPLICATION_JSON_UTF8_VALUE, produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public ResponseEntity<ItemLimitDTO> create(@Validated(New.class) @RequestBody ItemLimitDTO limitDTO) {
ItemLimit limit = itemLimitService.create(limitDTO);
return ResponseEntity.status(HttpStatus.CREATED).body(limit);
}
}
public class ItemLimitDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
@NotNull(groups = {New.class, Exist.class})
private ItemDTO item;
}
public class ItemDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
}
答案1
得分: 1
尝试在方法级别使用@Validated(New.class)，并在方法参数本身上使用@Valid：
@Validated(New.class)
@PostMapping(...)
public ResponseEntity<ItemLimitDTO> create(@Valid @RequestBody ItemLimitDTO limitDTO) {
// ...
}
英文:
try using @Validated(New.class) at the level of the method and @Valid for the method argument itself:
@Validated(New.class)
@PostMapping(...)
public ResponseEntity<ItemLimitDTO> create(@Valid @RequestBody ItemLimitDTO limitDTO) {
// ...
}
答案2
得分: 1
你需要在 ItemDTO 上添加 @Valid 注解，以启用级联验证，如Hibernate验证器文档所述：
对象图的验证是递归的，即如果标记为级联验证的引用指向一个对象，该对象本身具有用 @Valid 注解的属性，验证引擎也将跟随这些引用进行验证。验证引擎将确保在级联验证期间不会发生无限循环，例如，如果两个对象互相引用。
所以更改如下应该解决您的问题：
public class ItemLimitDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
@Valid
@NotNull(groups = {New.class, Exist.class})
private ItemDTO item;
}
英文:
You have to annotate @Valid on ItemDTO to enable cascade validation which is mentioned by the hibernate validator documentation as follows :
> The validation of object graphs is recursive, i.e. if a reference
> marked for cascaded validation points to an object which itself has
> properties annotated with @Valid, these references will be followed up
> by the validation engine as well. The validation engine will ensure
> that no infinite loops occur during cascaded validation, for example
> if two objects hold references to each other.
So change to the following should fix your problem :
public class ItemLimitDTO {
@Null(groups = {New.class})
@NotNull(groups = {Exist.class})
private Integer id;
@PositiveOrZero(groups = {New.class, Exist.class})
private Integer value;
@Valid
@NotNull(groups = {New.class, Exist.class})
private ItemDTO item;
}
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