Mybatis--association
①借助其它Mapper完成连表查询：
<association property="createUser" select="com.bd.dao.UserScInfoMapper.selectScUserNameById"
column="create_by">
</association>
说明：column是数据库字段，property为Java类属性。
②在本Mapper完成连表查询：
<collection property="nicInfoList"
ofType="com.bd.info.model.info.NicInfo"
column="{id=id, azId=az_id}" javaType="ArrayList" select="getNicInfoList">
</collection>
说明：ofType为列表类型，javaType为返回类型，select为查询体。（column是数据库字段，property为Java类属性）
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