mybatis association和collection标签怎么用

<resultMap type="Bill" id="ResultBill">

<id property="id" column="id"/>

<result property="dh" column="dh" />

<result property="rq" column="rq"/>

<association property="author" javaType="Author" >

<id property="id" column="idAutor" />

<result property="name" column="authorName" />

<result property="email" column="authorEmail"/>

</association>

<collection property="det1" javaType="ArrayList" ofType="BillDet1" >

<id property="id" column="idDet1"/>

<result property="dh" column="dhDet1"/>

<result property="wlbm" column="wlbm"/>

<result property="wlmc" column="wlmc"/>

<result property="unit" column="unit"/>

<result property="qty" column="qty"/>

</collection>

</resultMap>

<resultMap type="com.sailod.shiro.dto.HtAuthorityMenuDTO" id="OneMenuAuthority">

<id property="htAuthorityId" column="htAuthorityId" javaType="java.lang.Long" />

<result property="name" column="name" javaType="java.lang.String" />

<result property="currentUserId" column="currentUserId" javaType="java.lang.Long" />

<collection property="htAuthorityDTO" ofType="com.sailod.shiro.dto.HtAuthorityDTO"

select="selectAuthority" column="{htAuthorityId2 = htAuthorityId ,currentUserId2 = currentUserId}" >

</collection>

</resultMap>