单个参数直接传即可，多参数传递如下
<resultMap id="stationVo" type="com.gt.dev.domain.vo.DevStationVO" extends="station">
<result property="distance" column="distance"/>
<association property="on" column="{stationId=id,state=on}"
select="com.gt.dev.mapper.DevInfoMapper.countByStationId"/>
<association property="off" column="{stationId=id,state=off}"
select="com.gt.dev.mapper.DevInfoMapper.countByStationId"/>
<association property="error" column="{stationId=id,state=error}"
select="com.gt.dev.mapper.DevInfoMapper.countByStationId"/>
</resultMap>mybatis联表查询的时候我们会用到association标签
一个参数的时候：
<association column="id" property="User" select="getUser"></association>
<select id="getUser" resultMap="UserMap" parameterType="java.lang.String">
SELECT * FROM user_table WHERE id = #{id}
</select>那多个参数的时候怎么搞呢，今天就遇到这个场景，记录一下：
association标签里面的column以对象的形式传过去，接收的时候把parameterType改为
其中 id 和 name 是对应你表的字段，两个 param 名字随便定义
<association column="{param1=id,param2=name}" property="User" select="getUser"></association>
<select id="getUser" resultMap="UserMap" parameterType="java.util.Map">
SELECT * FROM user_table WHERE id = #{param1} and name = #{param2}
</select>
