resultType : 直接表示返回类型
resultMap : 结果集/对象等,比较灵活
举栗:
<resultMap id="resultMap" type="xxx.xxx.xxx.Bo" >
<result column="area" property="area" jdbcType="VARCHAR" />
<result column="count" property="count" jdbcType="INTEGER" />
</resultMap>
<select id="getAreaNameAndNum" resultMap="resultMap">
select area ,count(1) AS ‘count‘ from t_area group by area
</select>
原文:https://www.cnblogs.com/ramese666/p/12667190.html