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@Validated验证List集合 @Validated验证List集合的方法示例

执着,也是一种态度 人气:9

在开发时发现,@Validated只能验证单个实体类,在验证List集合时则不生效

@PostMapping(value="/test")
public ApiResult getRepaymentPlan(@RequestBody @Validated List<Test> repaymentPlanVOs){
 
}

经过查资料得知,@valid是可以使用的,我们自定义一个ValidList类来替换List就可以达到验证的目的,话不多说,直接看代码

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

然后用ValidList类替换我们的List即可

@PostMapping(value="/test")
public ApiResult getRepaymentPlan(@RequestBody @Validated ValidList<Test> repaymentPlanVOs){
 
}

补充,将@Validated返回的异常替换为我们自定义的json格式并返回,只需在当前controller类里注入一个异常bean,并用@ExceptionHandler来捕获对应的异常即可。MethodArgumentNotValidException为@Validated返回的异常,这里只需要捕获对应异常即可

@ExceptionHandler(value = MethodArgumentNotValidException.class)
 @ResponseBody
 public Map<String,Object> allExceptionHandler(MethodArgumentNotValidException e){
    Map<String,Object> result = new HashMap<String,Object>();
 MethodArgumentNotValidException ex = (MethodArgumentNotValidException)e;
 BindingResult bindingResult = ex.getBindingResult();
 StringBuilder errMsg = new StringBuilder(bindingResult.getFieldErrors().size() * 16);
 errMsg.append("Invalid request:");
 for (int i = 0 ; i < bindingResult.getFieldErrors().size() ; i++) {
  if(i > 0) {
  errMsg.append(",");
  }
  FieldError error = bindingResult.getFieldErrors().get(i);
  errMsg.append(error.getField()+":"+error.getDefaultMessage());
 }
    result.put("res_code","400");
    result.put("res_mess",errMsg.toString());
 return result;
 }

到此这篇关于@Validated验证List集合的方法示例的文章就介绍到这了,更多相关@Validated验证List集合内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持! 

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