pom.xml이란?

1. pom.xml 이란?

- pom.xml은 간단히 말하면 Maven의  *빌드 정보를 담고 있는 파일.

- pom(Project Object Model)을 설정하는 부분으로 프로젝트 내 빌드 옵션을 설정하는 부분. 

   * 빌드 :  우리가 작성하는 코드(고급언어)들을 컴퓨터에서 이해할 수 있는(기계어), 즉 실행 가능한 파일로 만드는 과정

 

   Maven이란?

   :  자바 프로젝트를 관리하는 툴로, 미리 작성된 xml 파일을 이용하여 라이브러리를 자동으로 다운로드하거나 프로젝트를 빌드해준다.

 

pom.xml의 예시

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.spring</groupId>   //그룹ID , 프로젝트를 만들때 입력. 제작사와 회사 단체 등을 식별하기 위한 것.
	<artifactId>example</artifactId>//프로젝트에 할당한 고유 ID 
	<name>example</name>            //프로그램 이름
	<packaging>war</packaging>      //패키지 종류
	<version>1.0.0-BUILD-SNAPSHOT</version>
	<properties>        //pom.xml에서 사용하는 속성 값 등을 모아 둠
		<java-version>1.8</java-version>
		<org.springframework-version>5.1.4.RELEASE</org.springframework-version>
		<org.aspectj-version>1.9.2</org.aspectj-version>
		<org.slf4j-version>1.7.25</org.slf4j-version>
	</properties>
	<dependencies>  //의존 라이브러리(프로그램이 참조하는 라이브러리)정보를 한곳에 모아 기술해 두기 위한 것
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
			<exclusions>
				<!-- Exclude Commons Logging in favor of SLF4j -->
				<exclusion>     //특정 의존 라이브러리 제외
					<groupId>commons-logging</groupId>
					<artifactId>commons-logging</artifactId>
				 </exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
				
		<!-- AspectJ -->
		<dependency>
			<groupId>org.aspectj</groupId>
			<artifactId>aspectjrt</artifactId>
			<version>${org.aspectj-version}</version>
		</dependency>	
		
		<!-- Logging -->
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${org.slf4j-version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>jcl-over-slf4j</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${org.slf4j-version}</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>1.2.15</version>
			<exclusions>
				<exclusion>
					<groupId>javax.mail</groupId>
					<artifactId>mail</artifactId>
				</exclusion>
				<exclusion>
					<groupId>javax.jms</groupId>
					<artifactId>jms</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jdmk</groupId>
					<artifactId>jmxtools</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.sun.jmx</groupId>
					<artifactId>jmxri</artifactId>
				</exclusion>
			</exclusions>
			<scope>runtime</scope>
		</dependency>

		<!-- @Inject -->
		<dependency>
			<groupId>javax.inject</groupId>
			<artifactId>javax.inject</artifactId>
			<version>1</version>
		</dependency>
				
		<!-- Servlet -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>servlet-api</artifactId>
			<version>2.5</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet.jsp</groupId>
			<artifactId>jsp-api</artifactId>
			<version>2.1</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>
	
		<!-- Test -->
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.7</version>
			<scope>test</scope>
		</dependency>   
		
		<!--h2 DB -->
		<dependency>
			<groupId>com.h2database</groupId>
			<artifactId>h2</artifactId>
			<scope>runtime</scope>
			<version>1.4.200</version>
		</dependency>
		
   	     <!-- mybatis --> 
   	     <dependency>
   	      <groupId>org.mybatis</groupId>
   	      <artifactId>mybatis</artifactId> 
   	      <version>3.4.6</version>
   	     </dependency>

   	     <!-- mybatis - spring--> 
   	       <dependency>
   	      <groupId>org.mybatis</groupId> 
   	      <artifactId>mybatis-spring</artifactId> 
   	      <version>1.3.2</version> 
   	      </dependency>
   	      
   	      
   	      <!-- spring-jdbc --> 
   	      <dependency> 
   	      <groupId>org.springframework</groupId> 
   	      <artifactId>spring-jdbc</artifactId> 
   	      <version>5.1.4.RELEASE</version> 
   	      </dependency>
   	      
   	      <!-- spring-test --> 
   	      <dependency>
   	       <groupId>org.springframework</groupId>
   	       <artifactId>spring-test</artifactId> 
   	       <version>${org.springframework-version}</version>
   	       <scope>test</scope> 
   	      </dependency>
   	      	<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>4.0.1</version>
			<scope>provided</scope>
		</dependency>	     
	</dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-eclipse-plugin</artifactId>
                <version>2.9</version>
                <configuration>
                    <additionalProjectnatures>
                        <projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
                    </additionalProjectnatures>
                    <additionalBuildcommands>
                        <buildcommand>org.springframework.ide.eclipse.core.springbuilder</buildcommand>
                    </additionalBuildcommands>
                    <downloadSources>true</downloadSources>
                    <downloadJavadocs>true</downloadJavadocs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <compilerArgument>-Xlint:all</compilerArgument>
                    <showWarnings>true</showWarnings>
                    <showDeprecation>true</showDeprecation>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <configuration>
                    <mainClass>org.test.int1.Main</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>