mybatis 解决从列名到属性名的自动映射失败问题

<select id="queryArea" resultType="com.imooc.wechatpro.model.Area">
        SELECT area_id, area_name, priority, create_time, last_edit_time
        FROM tb_area
        ORDER BY priority
        DESC
</select>

AreaDaoTest.java
Area area = areaDao.queryAreaById(3);

area = {Area@7489} 
 areaId = null
 areaName = null
 priority = {Integer@7513} 312
 createTime = null
 lastEditTime = null

mysql> select * from tb_area;
+---------+-----------+----------+-------------+----------------+
| area_id | area_name | priority | create_time | last_edit_time |
+---------+-----------+----------+-------------+----------------+
|       1 | 南苑      |      302 | NULL        | NULL           |
|       2 | 北苑      |      307 | NULL        | NULL           |
|       3 | 东苑      |      312 | NULL        | NULL           |
+---------+-----------+----------+-------------+----------------+

Area.java
public class Area {
    private Integer areaId;
    private String areaName;
    private Integer priority;
    private Date createTime;
    private Date lastEditTime;
    ······
}

<configuration>
    <settings>
        <setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
</configuration>

application.properties
mybatis.config-location=classpath:mybatis-config.xml