test/target/SSM_03/WEB-INF/classes/mybatis-config2.xml

<?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>

    <mappers>
        <mapper resource="mapper/NodeinfoMapper.xml"/>
    </mappers>
</configuration>