public Emp getEmpandDept();

 　　<resultMap type="com.eu.bean.Emp" id="emp3">

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

       <result column="last_name" property="lastName"/>

       <result column="gender" property="geder"/>

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

       <association property="dept" javaType="com.eu.bean.Dept">

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

           <result column="dept_name" property="deptName"/>

       </association>

   </resultMap>

 　　<select id="getEmpandDept" resultMap="emp3">

 　　   SELECT *

       FROM emp e

     　JOIN dept d

     　ON e.d_id=d.id

   </select>