Mybatisplus主键生成策略算法解析

package com.yl.bean;

import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import lombok.NoArgsConstructor;

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

/**
 * 用户实体类
 */
@Data
@NoArgsConstructor
public class User implements Serializable {
  @TableId(type=IdType.AUTO)//配置主键
  private Integer id;
  private String name;
  private Integer age;
  private String email;
  @TableField(fill = FieldFill.INSERT )//插入数据时更新该字段
  private Date createTime;
  @TableField(fill = FieldFill.INSERT_UPDATE)//插入和修改时更新该字段
  private Date updateTime;
}