使用@Valid 校验嵌套对象

目录

• @Valid 校验嵌套对象
• @Valid 嵌套对象验证不成功

@Valid 校验嵌套对象

参考网上的博客：ValidList 能校验list。

通过测试发现，@Valid只能校验一层。比如我这里有个person对象，里面有个ValidList<Teacher> 属性，Teacher对象里面有个List<Student> 属性。

如果在Controller层加上@Valid 是校验不到ValidList<Student> 属性的。

需要在List<Teacher> 属性前面加上 List<@Valid Teacher>

沾点代码：

package com.xiaoming.entity;
import javax.validation.Valid;
import java.util.*;
public class ValidList<E> implements List<E> {
    @Valid
    private List<E> 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(o);
    }

    @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.retainAll(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);
    }

    public List<E> getList() {
        return list;
    }

    public void setList(List<E> list) {
        this.list = list;
    }
}

     @PostMapping("/test")
    public String testBytes(@Valid @RequestBody ValidList<Persion> persions){
        return "success";
    }  

@Data
public class Persion {
    @NotNull(message = "name != null")
    private String name;
    @NotNull(message = "teacherList != null")
    private ValidList<@Valid Teacher> teacherList;
} 

@Data
public class Teacher {
    @NotNull
    private String name;
    @NotNull
    private List<Student> students;
}

@Valid 嵌套对象验证不成功

controller：

@PostMapping("WSendList")
public ApiResult getList( @ApiParam(required = true) @Valid  @RequestBody  PageListIO<WSendIO> body) {
        ...
        return ApiResult.success();
    }

PageListIO对象：

WSendIO对象：

public class WSendIO implements Serializable{
    @NotNull(message = "字段 不能为空")
    private Integer isTest;
    ...
}

这样请求WSendIO中的验证时不会执行的

解决方案：在PageListIO中使用@Valid

以上为个人经验，希望能给大家一个参考，也希望大家多多支持我们。