mybatis-plus自动填充功能

官网文档

https://mybatis.plus/guide/auto-fill-metainfo.html

对象添加注解

@TableField(fill = FieldFill.INSERT_UPDATE)

public enum FieldFill {
    /**
     * 默认不处理
     */
    DEFAULT,
    /**
     * 插入填充字段
     */
    INSERT,
    /**
     * 更新填充字段
     */
    UPDATE,
    /**
     * 插入和更新填充字段
     */
    INSERT_UPDATE
}

@Data
@TableName("discovery_page_config")
public class DiscoveryPageConfig implements Serializable {
    private static final long serialVersionUID = -1L;
    /**
     * 操作人id
     */
    @ApiModelProperty(value = "操作人id")
    @TableField(fill = FieldFill.INSERT_UPDATE)
    private Long operatorId;
}

自定义实现类 MyMetaObjectHandler

@Slf4j
@Component
public class MyMetaObjectHandler implements MetaObjectHandler {

    @Override
    public void insertFill(MetaObject metaObject) {
        if (metaObject.hasSetter("operatorId")) {
            //添加默认的操作者
            this.setFieldValByName("operatorId", JwtUtil.getUserId(), metaObject);
        }
    }

    @Override
    public void updateFill(MetaObject metaObject) {
        if (metaObject.hasSetter("operatorId")) {
            this.setFieldValByName("operatorId", JwtUtil.getUserId(), metaObject);
        }
    }
}

配置填充处理器

@Bean(name = "masterSqlSessionFactory")
@Primary
public MybatisSqlSessionFactoryBean masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource masterDataSource){
    MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean();
    mybatisPlus.setDataSource(masterDataSource);
    GlobalConfig globalConfig  = new GlobalConfig();
    globalConfig.setMetaObjectHandler(new MyMetaObjectHandler());
    mybatisPlus.setGlobalConfig(globalConfig);
    return mybatisPlus;
}