[Spring] context xml 분리

준비물

1. Spring Framework MVC MySQL & Mybatis 연동

 

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>/WEB-INF/spring/root-context.xml</param-value>
	</context-param>
	
	<!-- Creates the Spring Container shared by all Servlets and Filters -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

	<!-- Processes application requests -->
	<servlet>
		<servlet-name>appServlet</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
		
	<servlet-mapping>
		<servlet-name>appServlet</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

</web-app>

 

Servlet Context

Spring MVC 와 관련있는 빈을 설정

web.xml 의 <servlet> 참고

 

 

Root Context

Spring MVC 와 분리되어 빈을 관리하고 싶을 때 사용

web.xml 의 <context-param> 참고

<!-- 처음 생성 시 -->
<context-param>
	<param-name>contextConfigLocation</param-name>
	<param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>

<!-- 아래와 같이 수정 -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <!-- classpath 의 위치는 src/main/resources 이다. -->
    <param-value>
        /WEB-INF/spring/config/context-*.xml, 
        classpath*:spring/context-*.xml
    </param-value>
</context-param>

 

 

/src/main/webapp/WEB-INF/spring/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:context="http://www.springframework.org/schema/context"
    xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xsi:schemaLocation="http://www.springframework.org/schema/jdbc
        http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.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 -->

    <!-- 아래 부분을 context-datasource.xml 로 이동 -->
    <!-- MySQL DataSource -->
    <!-- <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/test?useSSL=false&amp;serverTimezone=UTC">
        </property>
        <property name="username" value="test"></property>
        <property name="password" value="test"></property>
    </bean> -->

    <!-- mybatis SqlSessionFactoryBean -->
    <!-- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="mapperLocations" value="classpath:/mapper/**/*_SQL.xml"></property>
    </bean> -->

</beans>

 

 

 

 

/src/main/webapp/WEB-INF/spring/config/context-datasource.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:context="http://www.springframework.org/schema/context"
    xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring"
    xmlns:jdbc="http://www.springframework.org/schema/jdbc"
    xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.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 -->

      <!-- root-context.xml 에서 가져온 내용 -->
      <!-- MySQL DataSource -->
      <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/study?useSSL=false&amp;serverTimezone=UTC">
        </property>
        <property name="username" value="study"></property>
        <property name="password" value="study"></property>
    </bean>

      <!-- mybatis SqlSessionFactoryBean -->
      <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- root-context.xml 에서 가져온 내용 -->

</beans>

 

그리고 서버를 재기동한다.

INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Mon Jan 18 17:23:22 KST 2021]; root of context hierarchy
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/config/context-datasource.xml]
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/root-context.xml]
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 1467 ms

톰캣 기동로그를 보면 해당 설정 파일을 잘 읽어왔다.