@Valid 注解不生效

• 引入依赖包,spring-boot-start-web 包默认会引入,如果非springboot项目需要单独引入一下
• 

     <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.2.2.Final</version>
     </dependency>

• 　　多层包装对象要使用@valid注解

@Data
@ApiModel
@NoArgsConstructor
@AllArgsConstructor
public class CustDistPriceDetailDTO implements Serializable {

    @ApiModelProperty(value = "主表信息")
    @NotNull(message = "主表信息不能为空")
    private DistributionPO distributionPO;

    @ApiModelProperty(value = "从表信息")
    @NotNull(message = "从表信息不能为空")
    @Size(min = 1, message = "从表信息不能为空")
    @Valid
    private List<DistributionEntryPO> entryList;

}

• 集合入参,要重写List函数

// 用法示例
@PostMapping("/getCustomerRecAndReceiptByCustomerNumber")
public BaseResponse getCustomerRecAndReceiptByCustomerNumber(@RequestBody @Valid ValidList<String> customerNumbers) { return apiService.getCustomerRecAndReceiptByCustomerNumber(customerNumbers); }

@Data
public class ValidList<E> implements List<E>, Serializable {

    @Valid
    private List<E> list;

    public ValidList() {
        this.list = new ArrayList<>();
    }


    @Override
    public int size() {
        return list.size();
    }

    @Override
    public boolean isEmpty() {
        return list.isEmpty();
    }

    @Override
    public boolean contains(Object o) {
        return list.contains(0);
    }

    @Override
    public Iterator<E> iterator() {
        return list.iterator();
    }

    @Override
    public Object[] toArray() {
        return list.toArray();
    }

    @Override
    public <T> T[] toArray(T[] a) {
        return list.toArray(a);
    }

    @Override
    public boolean add(E e) {
        return list.add(e);
    }

    @Override
    public boolean remove(Object o) {
        return list.remove(o);
    }

    @Override
    public boolean containsAll(Collection<?> c) {
        return list.containsAll(c);
    }

    @Override
    public boolean addAll(Collection<? extends E> c) {
        return list.addAll(c);
    }

    @Override
    public boolean addAll(int index, Collection<? extends E> c) {
        return list.addAll(index, c);
    }

    @Override
    public boolean removeAll(Collection<?> c) {
        return list.removeAll(c);
    }

    @Override
    public boolean retainAll(Collection<?> c) {
        return list.removeAll(c);
    }

    @Override
    public void clear() {
        list.clear();
    }

    @Override
    public E get(int index) {
        return list.get(index);
    }

    @Override
    public E set(int index, E element) {
        return list.set(index, element);
    }

    @Override
    public void add(int index, E element) {
        list.add(index, element);
    }

    @Override
    public E remove(int index) {
        return list.remove(index);
    }

    @Override
    public int indexOf(Object o) {
        return list.indexOf(o);
    }

    @Override
    public int lastIndexOf(Object o) {
        return list.lastIndexOf(o);
    }

    @Override
    public ListIterator<E> listIterator() {
        return list.listIterator();
    }

    @Override
    public ListIterator<E> listIterator(int index) {
        return list.listIterator(index);
    }

    @Override
    public List<E> subList(int fromIndex, int toIndex) {
        return list.subList(fromIndex, toIndex);
    }
}