Mybatis-plus使用注解 @TableField(exist = false)

import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableLogic;
import com.baomidou.mybatisplus.annotation.TableName;

import java.io.Serializable;
import java.util.Date;
import java.util.List;

import com.fasterxml.jackson.annotation.JsonInclude;
import lombok.Data;


@Data
@TableName("pms_category")
public class CategoryEntity implements Serializable {
 private static final long serialVersionUID = 1L;

 
 @TableId
 private Long catId;
 
 private String name;
 
 private Long parentCid;
 
 private Integer catLevel;
 
 @TableLogic(value = "1",delval = "0")
 private Integer showStatus;
 
 private Integer sort;
 
 private String icon;
 
 private String productUnit;
 
 private Integer productCount;

 @JsonInclude(JsonInclude.Include.NON_EMPTY) //children不为空则显示，要不然就不展示了。解决了，树下没有子树但是会有个空白的占位的情况
 @TableField(exist=false) //树形展示用的，表中无此字段标识表中无次字段
 private List<CategoryEntity> children;
}