关于spring里面对bean的@valid注解使用验证list问题

Question

@Validated
public class TestController 


@PostMapping("/users")
    public Map<String, Object> saveUser(@RequestBody RegisterUserVO registerUserVO)
            throws NoSuchAlgorithmException {
        return userService.save(registerUserVO);
    }
    
    
    
 public class RegisterUserVO {


    @NotBlank(message = "用户名不能为空")
    @NotNull(message = "用户名不能为空")
    private String username;




    @Valid
    @NotNull
    private List<Integer> roleIdList;

    @NotBlank(message = "密码不能为空")
    @NotNull(message = "密码不能为空")
    private String password;

对list的验证无效，然后我又改了改

 @Valid
 private List<@NotNull Integer> roleIdList;
 
 @PostMapping("/users")
    public Map<String, Object> saveUser(@RequestBody @Valid RegisterUserVO registerUserVO)
            throws NoSuchAlgorithmException {
        return userService.save(registerUserVO);
    }

依旧无效，在文档里面类似是长这样

@AvailableInStore(groups={Availability.class})
public class Book {
    @NonEmpty(groups={FirstLevelCheck.class, Default.class})
    private String title;

    @Valid
    @NotNull
    private List<Author> authors;

    @Valid
    private Map<String, Review> reviewsPerSource;

    @Valid
    private Review pickedReview;

    private List<@NotBlank String> tags;

    private Map<Integer, List<@NotBlank String>> tagsByChapter;

    private List<@Valid Category> categories;

    private Map<Integer, List<@Valid Author>> authorsByChapter;

    [...]
}

不知道是哪里出了问题，导致结果出来，希望各位看看，其他基本类型的验证都是好的，就list不行。

Answer 1

你是想要如果List集合中含有Null元素，就校验失败吗？这需要自定义Validator的。