[mybatis] springMVC + MyBatis 연동 (스프링MVC + 마이바티스)

pom.xml에 라이브러리 설정

---

▶pom.xml (부분)

<!-- 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>

<!-- SpringJdbc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.0.2.RELEASE</version>
</dependency>

<!-- Mysql ConnectorJ -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.27</version>
</dependency>

DB는 자신이 쓰는 DB에 맞춰서 추가해주면 된다.

 

 

▶pom.xml 전체 코드

<?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>
	<artifactId>boardApp</artifactId>
	<name>boardProject</name>
	<packaging>war</packaging>
	<version>1.0.0-BUILD-SNAPSHOT</version>
	<properties>
		<java-version>1.6</java-version>
		<org.springframework-version>3.1.1.RELEASE</org.springframework-version>
		<org.aspectj-version>1.6.10</org.aspectj-version>
		<org.slf4j-version>1.6.6</org.slf4j-version>
		
		<!-- add dependencies version DB start -->
        <org.springframework.jdbc-version>5.0.2.RELEASE</org.springframework.jdbc-version>
        <org.mybatis-version>3.4.6</org.mybatis-version>
        <org.mybatis.spring-version>1.3.2</org.mybatis.spring-version>
        <org.mysql.connector-version>8.0.27</org.mysql.connector-version>
	</properties>
	
	<dependencies>
		<!-- Spring -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-context</artifactId>
			<version>${org.springframework-version}</version>
			<exclusions>
				<!-- Exclude Commons Logging in favor of SLF4j -->
				<exclusion>
					<groupId>commons-logging</groupId>
					<artifactId>commons-logging</artifactId>
				 </exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</artifactId>
			<version>${org.springframework-version}</version>
		</dependency>
		
		<!-- JDBC  -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${org.springframework.jdbc-version}</version>
        </dependency>
        
        <!-- myBatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${org.mybatis-version}</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>${org.mybatis.spring-version}</version>
        </dependency>
        
        <!-- MySql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${org.mysql.connector-version}</version>
        </dependency>
        
        <!-- MyBatis log -->
		<dependency>
		    <groupId>org.lazyluke</groupId>
		    <artifactId>log4jdbc-remix</artifactId>
		    <version>0.2.7</version>
		</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>
				
		<!-- 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>        
	</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>1.6</source>
                    <target>1.6</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>

 

 

 

 

 

 

 

 

 

 

root-context.xml

---

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
		http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.xsd
		http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
	
	<!-- Root Context: defines shared resources visible to all other web components -->

	
	<context:property-placeholder location="classpath:properties/db.properties" />
	<bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
		<property name="driverClass" value="${db.driver}" />
		<property name="url" value="${db.url}" />
		<property name="username" value="${db.username}" />
		<property name="password" value="${db.password" />
	</bean>


	<!-- MyBatis 맵퍼의 SQL 문장에 대한 파라미터 및 리턴 타입을 담을 클래스를 검색 할 패키지 지정 -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="configLocation" value="classpath:mybatis-config.xml" />
		<property name="mapperLocations" value="classpath:mybatisMappers/**/*.xml" />
	</bean>

	<bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
		<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
	</bean>
</beans>

• <property name="mapperLocations" ... >
  Mapper 파일을 만들고 이 파일을 지정하는 경우 사용할 수 있다.
  
  만약 Mapper 인터페이스를 구현하는 방법을 사용할 경우 
  <mybatis:scan base-package="com.example.domain.mapper" /> 을 작성하여 Mapper 인터페이스의 스캔을 활성화해주어야 한다.

 

 

 

 

 

 

 

 

 

db.properties 생성

---

▶ src/main/resource/properties/db.properties

db.driver=com.mysql.jdbc.Driver          #mysql
db.url=jdbc:mysql://localhost:3306/db명
db.username=username
db.password=password

 

 

 

 

 

 

 

mapper.xml 추가

---

mybatisMapper/**/*.xml 
→ mybatisMapper 디렉터리 하위 디렉터리들 중에 .xml로 끝나는 파일들을 지정
*.xml: .xml로 끝나는 파일들
**: mybatisMapper 디렉터리 하위 디렉터리들

▶src/main/resource/mybatisMappers/board.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper  PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 
<mapper namespace="com.spring.boardapp.dao.BoardDao">
    <select id="getB" parameterType="java.util.HashMap" resultType="com.spring.boardapp.domain.Board">
   
        SELECT id,
               subject,
               content, 
               writer, 
               date_format(regist_datetime, '%Y-%m-%d %H:%i:%s') regist_datetime 
        FROM board
        WHERE id = #{id}
        
    </select>
    
    ...
    
</mapper>

• parameterType
  파라미터를 어떤 타입으로 전달 받을지 지정, 해당 코드에서는 id를 java.util.HashMap 타입으로 전달받겠다는 뜻이다.
  
  
• resultType
  반환 값을 어떠한 타입으로 저장할지. 해당 코드에서는 Board 객체에 담긴다.

 

 

 

 

 

 

 

 

 

 

mybatis-config.xml: MyBatis 설정

---

▶src/main/resource/mybatis-config.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>
 
 	<!-- 별칭 지정 -->
 	<typeAliases>
 		<typeAlias type="com.spring.boardapp.domain.Board" alias="Board"/>
 	</typeAliases>
 
</configuration>

<configuration> 태그 사이에 MyBatis 설정을 해주면 된다.

설정 중 하나의 예를 들자면 별칭이 있다. 자주 사용하는 타입의 별칭을 지정할 수 있다.

 

▶src/main/resource/mybatisMappers/board.xml

board.xml 코드의 일부인데 resultType을 보면 알 수 있듯이 별칭을 사용하여 패키지 명을 지정이 간단해졌다.

<mapper namespace="com.spring.boardapp.dao.BoardDao">
    <select id="getB" parameterType="java.util.HashMap" resultType="Board">
   
	...
        
    </select>
    
    ...
</mapper>