MyBatis(iBatis) 설정을 아래와 같이 변경
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
...
<setting name="mapUnderscoreToCamelCase" value="true" />
</settings>
<environments>
...
</environments>
<mappers>
<mapper resource="com/..."/>
...
</mappers>
</configuration>
