pom.xml에 의존성 추가 

<!-- DB 연동 의존성 -->

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.6</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.2</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.0.8.RELEASE</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-dbcp2 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-dbcp2</artifactId>
    <version>2.5.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.jslsolucoes/ojdbc6 -->
<dependency>
    <groupId>com.jslsolucoes</groupId>
    <artifactId>ojdbc6</artifactId>
    <version>11.2.0.1.0</version>
</dependency>

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