老师的配置：
<mapper namespace="hstc.zhcp.persistence.mapper.TeacherMapper">

    <resultMap id="BaseResultMap" type="Teacher">
        <id column="tid" jdbcType="INTEGER" property="tid" />
        <result column="tname" jdbcType="VARCHAR" property="tname" />
        <result column="tgender" jdbcType="CHAR" property="tgender" />
        <result column="tposition" jdbcType="VARCHAR" property="tposition" />
        <result column="tpassword" jdbcType="VARCHAR" property="tpassword" />
        <association column="aId" property="academy" javaType="Teacher" select="hstc.zhcp.persistence.mapper.AcademyMapper.load">
            <id column="aid" property="aid"/>
            <result column="aname" property="aname"/>
        </association>
        
    </resultMap>
    <select id="validateLogin" parameterType="int" resultType="Teacher">
        SELECT *
        FROM teacher
        WHERE tid = #{tid}
    </select>

    <select id="findTeacherByAcademyId" parameterType="int" resultType="Teacher" >
        SELECT * FROM teacher WHERE aId = #{aid}
    </select>

</mapper>

部门的配置：
<mapper namespace="hstc.zhcp.persistence.mapper.AcademyMapper">

    <resultMap id="BaseResultMap" type="Academy">
        <id column="aid" jdbcType="INTEGER" property="aid" />
        <result column="aname" jdbcType="VARCHAR" property="aname" />
        <collection column="aid" property="teacherList" ofType="Teacher" select="hstc.zhcp.persistence.mapper.TeacherMapper.findTeacherByAcademyId" fetchType="lazy"/>
    </resultMap>
   
    <select id="load" parameterType="int" resultType="Academy">
        SELECT * FROM academy WHERE aid = #{aid}
    </select>
</mapper>

两个关系是一对多，从老师查询部门，无法查询到部门的信息，求解决？