~~~ //返回一条记录的map；key就是列名，值就是对应的值 <select id="selEmpMap" resultType="java.util.Map"> select * from employee where id=#{id} </select> Map<String,Employee> selEmpMap(int id); ~~~ ~~~ //多条记录封装一个map：Map<Integer,Employee>:键是这条记录的主键，值是记录封装后的javaBean //@MapKey:告诉mybatis封装这个map的时候使用哪个属性作为map的key @MapKey("name") Map<String,Employee> selAllEmpByMap(String name); <select id="selAllEmpByMap" resultType="cn.li.pojo.Employee"> <bind name="p" value="'%'+name+'%'"></bind> select * from employee where name like #{p} </select> ~~~