<resultMap type="entity.Grade" id="GradeResult">
<id column="gid" jdbcType="INTEGER" property="gid"/>
<result column="gname" jdbcType="VARCHAR" property="gname"/>
<result column="gdesc" jdbcType="VARCHAR" property="gdesc"/>
<!-- 一对多关系 -->
<!-- <collection property="stus" resultMap="Student.StudentResult"></collection> -->
<collection property="stus" ofType="entity.Student">
<id property="sid" column="sid"/>
<result property="sname" column="sname"/>
<result property="sex" column="sex"/>
</collection>
</resultMap>
<resultMap type="entity.Student" id="StudentResult">
<id column="sid" jdbcType="INTEGER" property="sid"/>
<result column="sname" jdbcType="VARCHAR" property="sname"/>
<result column="sex" jdbcType="VARCHAR" property="sex"/>
<!-- 多对一 -->
<!-- <association property="grade" resultMap="Grade.GradeResult"></association> -->
<association property="grade" javaType="entity.Grade">
<id property="gid" column="gid"/>
<result property="gname" column="gname"/>
<result property="gdesc" column="gdesc"/>
</association>
</resultMap>