• 校验实体对象必传参数是否为空


    单对象校验

    实体类UserInfo.java

    import io.swagger.annotations.ApiModelProperty;
    import lombok.Data;
    
    import javax.validation.constraints.NotEmpty;
    import javax.validation.constraints.NotNull;
    import java.io.Serializable;
    import java.util.Date;
    
    @Data
    public class UserInfo implements Serializable {
        @ApiModelProperty(value = "标题", required = true)
        @NotEmpty(message = "名称不能为空")
        private String title;
        
        @ApiModelProperty(value = "创建时间", required = true)
        @NotNull(message = "创建时间不能为空")
        private Date createTime;
    }
    

    其中message用于提示语内容

    控制层 UserApi.java

      import javax.validation.Valid;
    
    
      @ApiOperation(value = "测试接口")
      @ApiImplicitParam(name = "data", value = "数据", required = true, dataType = "UserInfo", paramType = "body")
      @PostMapping
      public ResultBean<Boolean> businessStatus(@RequestBody @Valid UserInfo data) {
            //业务操作
            return ResultBean.build();
        }
    
    

    特别注意:@RequestBody@Valid 顺序必须如上所示!

    全局异常拦截 GlobalExceptionHandler.java

    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.web.bind.MethodArgumentNotValidException;
    import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.RestControllerAdvice;
    
    import javax.management.MBeanException;
    
    /**
     * 全局异常处理
     * 作用在所有注解了@RequestMapping的控制器的方法上
     **/
    @RestControllerAdvice
    public class GlobalExceptionHandler {
    
        private static final Logger logger = LoggerFactory.getLogger(GlobalExceptionHandler.class);
    
    
        @ExceptionHandler(MethodArgumentNotValidException.class)
        public ResultBean paramException(MethodArgumentNotValidException ex) {
            logger.error(ex.getMessage(), ex);
            return ResultBean.build(110, ex.getBindingResult().getFieldError().getDefaultMessage());
        }
    
    }
    
    

    特别注意:ex.getBindingResult().getFieldError().getDefaultMessage()) 获取之前绑定的message`内容

    集合对象校验(List<Object>

    添加ValidList.java

    import javax.validation.Valid;
    import java.util.*;
    
    public class ValidList<E> implements List<E> {
    
        @Valid
        private List<E> list = new ArrayList<>();
    
        public List<E> getList() {
            return list;
        }
    
        public void setList(List<E> list) {
            this.list = list;
        }
    
        @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.contains(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);
        }
    }
    

    控制层 UserApi.java

      import javax.validation.Valid;
    
    
      @ApiOperation(value = "测试接口")
      @ApiImplicitParam(name = "data", value = "数据", required = true, dataType = "UserInfo", allowMultiple = true, paramType = "body")
      @PostMapping
      public ResultBean<Boolean> businessStatus(@RequestBody @Valid ValidList<UserInfo> data) {
            //业务操作
            return ResultBean.build();
        }
    
    

    特别注意:@RequestBody@Valid 顺序必须如上所示!

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  • 原文地址:https://www.cnblogs.com/buzheng/p/15771506.html
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