springboot Validated失效的问题及解决思路

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>

@Data
@Accessors(chain = true)
@TableName("user")
@Validated
public class User {
    private Integer id;
    @NotBlank(message = "姓名不能为空")
    private  String name;
    @Min(message = "年龄不正确1-100之间",value = 1)
    @Max(message = "年龄不正确1-100之间",value = 1)

    private  Integer age ;
    private Integer sex;

}

@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD, ElementType.FIELD})
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = ListNotHaveNullValidatorImpl.class)//此处指定了注解的实现类
public @interface ListNotHaveNull {
    /**
     * 添加value属性，可以作为校验时的条件,若不需要，可去掉此处定义
     */
    int value() default 0;
    String message() default "List集合中不能含有null元素";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};
    /**
     * 定义List，为了让Bean的一个属性上可以添加多套规则
     */
    @Target({METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER})
    @Retention(RUNTIME)
    @Documented
    @interface List {
        ListNotHaveNull[] value();
    }
}

@Service
public class ListNotHaveNullValidatorImpl implements ConstraintValidator<ListNotHaveNull, List> {
    private int value;
    @Override
    public void initialize(ListNotHaveNull constraintAnnotation) {
        //传入value 值，可以在校验中使用
        this.value = constraintAnnotation.value();
    }
    public boolean isValid(List list, ConstraintValidatorContext constraintValidatorContext) {
        for (Object object : list) {
            if (object == null) {
                //如果List集合中含有Null元素，校验失败
                return false;
            } else if (object instanceof String) {
                String value = object.toString();
                if (value.trim().length() == 0){
                    return false;
                }
            }
        }
        return true;
    }
}

@Data
public class SysRole {

    private Long roleId;

    @NotBlank(message = "角色名不能为空")
    private String name;

    @NotEmpty(message = "资源列表不能为空")
    @ListNotHaveNull(message = "List 中不能含有null元素")
    @Valid
    private List<String> paths;

}

    @PostMapping("/addRole")
    public R addRole(@RequestBody @Valid SysRole sysRole) {
        System.out.println("走到这里说明校验成功");
        System.out.println(sysRole);
        return R.ok(R.SUCCESS_MSG);
    }

public class ValidatorUtils {
    private ValidatorUtils() { }

    private static Validator validator;
    static {
        validator = Validation.buildDefaultValidatorFactory().getValidator();
    }

    /**
     * 校验对象
     *
     * @param object 待校验对象
     * @param groups 待校验的组
     * @throws RRException 校验不通过，则报RRException异常
     */
    public static void validateEntity(Object object, Class<?>... groups) throws RRException {
        Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object, groups);

        if (!constraintViolations.isEmpty()) {
            Iterator<ConstraintViolation<Object>> iterator = constraintViolations.iterator();
            StringBuilder msg = new StringBuilder();
            while (iterator.hasNext()) {
                ConstraintViolation<Object> constraint = iterator.next();
                msg.append(constraint.getMessage()).append(',');
            }
            throw new RRException(msg.toString().substring(0,msg.toString().lastIndexOf(',')));
        }
    }
}

@RestControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(value = MethodArgumentNotValidException.class)
    @ResponseBody
    public Result MethodArgumentNotValidExceptionHandler(MethodArgumentNotValidException e)
    {
        //获取实体类定义的校验注解字段上的message作为异常信息，@NotBlank(message = "用户密码不能为空！")异常信息即为"用户密码不能为空！"
        List<ObjectError> allErrors = e.getBindingResult().getAllErrors();
        String message = allErrors.stream().map(s -> s.getDefaultMessage()).collect(Collectors.joining(";"));
        List<String> msgList = new ArrayList<>();
        msgList = Arrays.asList(message.split(";"));
        return Result.failed(msgList.get(0));
    }
}

    @ExceptionHandler({ConstraintViolationException.class})
    @ResponseBody
    public Result handleConstraintViolationException(ConstraintViolationException ex) {
        return Result.failed(ex.getMessage());
    }