MyBatis Relational Query Java

<mapper namespace= "Com.rrz.modules.awardrecord.dao.CheckAwardsDao" >
<resultmap type= "Com.rrz.modules.awardrecord.entity.CheckAwards" id= "Checkawardsmap" >
<id property= "id" column= "id"/>
<result property= "CustId" column= "cust_id"/>
</resultMap>

<select id= "Getcheckaward" parametertype= "Com.rrz.modules.awardrecord.entity.CheckAwards" resultmap= " Checkawardsmap ">
SELECT a.id,a.cust_id from Check_awards a WHERE a.id = #{id} and a.cust_id = #{custid}
</select>

</mapper>

<mapper namespace= "Com.rrz.modules.awardrecord.dao.CheckAwardspicsDao" >

<resultmap type= "Com.rrz.modules.awardrecord.entity.CheckAwardspics" id= "Checkawardspicsmap" >
<result property= "Picurl" column= "Picurl"/>
</resultMap>

<select id= "Getcheckawardpics" parametertype= "Com.rrz.modules.awardrecord.entity.CheckAwardspics" resultmap= " Checkawardspicsmap ">
SELECT B.picurl from check_awardspics b WHERE b.award_id = #{awardid}
</select>

</mapper>

public class checkawardvo{

Private Checkawards checkawards;
Private list<checkawardspics> pics;

Public list<checkawardspics> Getpics () {
return pics;
}

public void Setpics (list<checkawardspics> pics) {
This.pics = pics;
}

Public Checkawards getcheckawards () {
return checkawards;
}

public void Setcheckawards (Checkawards checkawards) {
This.checkawards = Checkawards;
}

}

Public Checkawardvo Getcheckawardvo (checkawards checkawards) {
Checkawardvo vo = new Checkawardvo ();
Checkawards = Checkawardsdao.getcheckaward (checkawards);
Vo.setcheckawards (checkawards);
Checkawardspics pic = new Checkawardspics ();
if (checkawards!=null) {
Pic.setawardid (Checkawards.getid ());
}
list<checkawardspics> list = Checkawardspicsdao.getcheckawardpics (pic);
Vo.setpics (list);
return VO;
}

Checkawardvo Pics=awardrecordservice.getcheckawardvo (CHECKAWARDSB);

M.addattribute ("Pics", pics.getpics ());

MyBatis Relational Query Java