22. 메이븐 사용법

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>my-web-app</artifactId>
    <version>1.0.0</version>
    <packaging>war</packaging>
</project>

<dependencies>
    <!-- 스프링 프레임워크 -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.3.30.RELEASE</version>
    </dependency>

    <!-- log4j 로깅 -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
</dependencies>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM
    "log4j.dtd">
<log4j:configuration>

    <!-- 콘솔 출력 설정 -->
    <appender name="console"
        class="org.apache.log4j.ConsoleAppender">
        <layout
            class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern"
                value="%d{yyyy-MM-dd HH:mm:ss}
                       [%-5p] %c - %m%n" />
        </layout>
    </appender>

    <!-- 루트 로거 설정 -->
    <root>
        <priority value="info" />
        <appender-ref ref="console" />
    </root>

</log4j:configuration>

import org.apache.log4j.Logger;

public class MemberController {

    private static final Logger logger =
        Logger.getLogger(
            MemberController.class);

    public void login(String userId) {
        logger.debug("로그인 시도: " + userId);
        logger.info("로그인 성공: " + userId);
        logger.warn("비밀번호 3회 오류: "
            + userId);
        logger.error("DB 연결 실패");
    }
}

<dependencies>
    <!-- Spring Web MVC -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.3.30.RELEASE</version>
    </dependency>

    <!-- MyBatis-Spring -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.2</version>
    </dependency>

    <!-- Oracle JDBC -->
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0</version>
    </dependency>

    <!-- log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
</dependencies>