1.遇到的问题:
今天开发接口,遇到请求参数固定为List<CommonConfigBean>类型的,如下。发现参数校验失效。
@RequestMapping(method = RequestMethod.POST)
public void insertCommonConfig(@RequestBody @Validated List<CommonConfigBean> list){
int result=commonConfigService.insertCommonConfig(list);
//更新缓存池
if(result>0) {
updateCache(list);
log.info("refresh the configCache");
}
}
@Getter
@Setter
@ToString
public class CommonConfigBean {
/**主键id*/
private Integer id;
/**参数名称*/
@Length(max = 30)
@NotEmpty
private String itemName;
/**参数值*/
@Length(max = 1000)
@NotEmpty
private String itemValue;
/**备注*/
@Length(max = 50)
private String memo;
}
2.解决方案一:
新建一个类,把List<SaveVideoReq>作为成员变量, 然后用@Valid注解在List上。
public class CommonConfigBeanWrapper{
@Valid
private List<CommonConfigBean> req;
}
3. 解决方案二:
但是,由于某种原因,前端只会传[{“name”:“name”,“sex”:“sex”,“type":"视频"},{...}]。因此,请求对象是固定的,不能用方案一处理。此时,可以参考网上的一个方法,创建一个类,实现List接口,并添加List<E> list = new ArrayList<>();或者LinkedList作为成员变量,如下:
package com.dahuatech.peopasg.infrastructure.bean;
import lombok.Data;
import javax.validation.Valid;
import java.util.*;
@Data
public class ValidList<E> implements List<E> {
@Valid
private List<E> list = new LinkedList<>();
@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);
}
}
然后,控制器的参数列表就变成了如下。此时,就可以正常从bingdingResult获取校验结果了。
@RequestMapping(method = RequestMethod.POST)
public void insertCommonConfig(@RequestBody @Validated ValidList<CommonConfigBean> list){
int result=commonConfigService.insertCommonConfig(list);
//更新缓存池
if(result>0) {
updateCache(list);
log.info("refresh the configCache");
}
}