MybatisPlus使用MetaObjectHandler设置insert update默认值

想实现在insert和update时，默认插入创建人，创建时间，更新人，更新时间字段的值。

使用mybatisplus中MetaObjectHandler 元对象字段填充控制器 来处理，所以通过在实体类设置注解@TableField的fill属性，再自定义配置处理即可。

import java.util.Date;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;
import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.neuxa.springbreeze.core.session.UserInfo;
import com.neuxa.springbreeze.core.session.UserSessionHolder;
import com.neuxa.springbreeze.core.util.SbzDateUtils;
import com.neuxa.springbreeze.core.util.SbzStringUtils;


@Component
public class MetaObjectHandlerConfig implements MetaObjectHandler {

    
    @Override
    public void insertFill(MetaObject metaObject) {
        Date now = SbzDateUtils.now();
        setFieldValByName("createTime", now, metaObject);
        setFieldValByName("updateTime", now, metaObject);
        UserInfo userInfo = UserSessionHolder.getUserInfo();
        if (userInfo != null && SbzStringUtils.isNotBlank(userInfo.getUserName())) {
            setFieldValByName("createUser", userInfo.getUserName(), metaObject);
        }
    }

    
    @Override
    public void updateFill(MetaObject metaObject) {
        Date now = SbzDateUtils.now();
        setFieldValByName("updateTime", now, metaObject);
        UserInfo userInfo = UserSessionHolder.getUserInfo();
        if (userInfo != null && SbzStringUtils.isNotBlank(userInfo.getUserName())) {
            setFieldValByName("updateUser", userInfo.getUserName(), metaObject);
        }
    }

}

 @data
public class BasePO implements Serializable {

    private static final long serialVersionUID = 1L;

    
    @TableId(type = IdType.ASSIGN_ID)
    private String id;

    
    @TableField(value = "create_time", fill = FieldFill.INSERT)
    private Date createTime;

    
    @TableField(value = "create_user", fill = FieldFill.INSERT)
    private String createUser;

    
    @TableField(value = "update_time", fill = FieldFill.INSERT_UPDATE)
    private Date updateTime;

    
    @TableField(value = "update_user", fill = FieldFill.UPDATE)
    private String updateUser;