MyBatis(九) 使用association定义单个对象的封装规则
(1)接口中编写方法
public Emp getEmpandDept();
(2)编写Mapper文件
1 <resultMap type="com.eu.bean.Emp" id="emp3"> 2 <id column="id" property="id"/> 3 <result column="last_name" property="lastName"/> 4 <result column="gender" property="geder"/> 5 <result column="email" property="email"/> 6 <association property="dept" javaType="com.eu.bean.Dept"> 7 <id column="id" property="id"/> 8 <result column="dept_name" property="deptName"/> 9 </association> 10 </resultMap> 11 <select id="getEmpandDept" resultMap="emp3"> 12 SELECT * 13 FROM emp e 14 JOIN dept d 15 ON e.d_id=d.id 16 </select>