content: package com.itheima.reggie.common;
  
  import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
  import lombok.extern.slf4j.Slf4j;
  import org.apache.ibatis.reflection.MetaObject;
  import org.springframework.stereotype.Component;
  import java.time.LocalDateTime;
  
  /**
   * 自定义元数据对象处理器
   */
  @Component
  @Slf4j
  public class MyMetaObjecthandler implements MetaObjectHandler {
      /**
       * 插入操作，自动填充
       * @param metaObject
       */
      @Override
      public void insertFill(MetaObject metaObject) {
          log.info("公共字段自动填充[insert]...");
          log.info(metaObject.toString());
  
          metaObject.setValue("createTime", LocalDateTime.now());
          metaObject.setValue("updateTime",LocalDateTime.now());
          metaObject.setValue("createUser",BaseContext.getCurrentId());
          metaObject.setValue("updateUser",BaseContext.getCurrentId());
      }
  
      /**
       * 更新操作，自动填充
       * @param metaObject
       */
      @Override
      public void updateFill(MetaObject metaObject) {
          log.info("公共字段自动填充[update]...");
          log.info(metaObject.toString());
  
          long id = Thread.currentThread().getId();
          log.info("线程id为：{}",id);
  
          metaObject.setValue("updateTime",LocalDateTime.now());
          metaObject.setValue("updateUser",BaseContext.getCurrentId());
      }
  }
  