@Configuration - @Import

@Import

  -하나의 @Configuration 클래스에서 다수의 @Configuration 클래스를 묶을 수 있음.

  -장점은 개발자가 모든 @Configuration 클래스 목록을 기억할 필요 없이 @Import 어노테이션이 적용된 클래스만 기억하면 손쉽게 설정 정보 추적이 가능

 

 

spring301.zip

 

BoardService.java

package service;   public class BoardService implements AbstractService {    @Override  public String getClassName() {   // TODO Auto-generated method stub   return "BoardService";  } }

 

NoticeService.java

package service; import org.springframework.beans.factory.annotation.Autowired;   public class NoticeService implements AbstractService {    //@Autowired  private BoardService boardService;    //생성자  public NoticeService(BoardService boardService){   this.boardService = boardService;  }    @Override  public String getClassName() {   // TODO Auto-generated method stub   System.out.println(boardService.getClassName());   return "NoticeService";  } }

 

SpringConfig.java

package config; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.ImportResource; import service.BoardService; import service.NoticeService; import vo.MyHome01; import vo.MyHome02;   @Configuration @ImportResource("classpath:/board-config.xml") public class SpringConfig {    @Autowired  private BoardService boardService;    @Bean(name="noticeService")  public NoticeService noticeService(){   return new NoticeService(boardService);  }    @Bean  public MyHome01 myHome01(){   return new MyHome01();  }    @Bean(name="myhome")  public MyHome02 myHome02(){   return new MyHome02();  } }

 

SpringConfigWithImport.java

package config.total; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Import; import config.SpringConfig;   @Configuration @Import({SpringConfig.class}) public class SpringConfigWithImport {   }

여러개의 클래스를 사용하고 싶을 때는 다음과 같이 콤마(,)를 사용

@Import({AAA.class, BBB.class, CCC.class})

 

 

AbstractController.java

package controller; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.stereotype.Component; import org.springframework.web.servlet.ModelAndView; import service.AbstractService; import service.NoticeService; import vo.MyHome; import vo.MyHome01;   @Component public class AbstractController extends   org.springframework.web.servlet.mvc.AbstractController {    @Resource(name="noticeService")  private NoticeService noticeService;    @Resource(name="myhome")  private MyHome myHome;    @Override  protected ModelAndView handleRequestInternal(HttpServletRequest arg0,    HttpServletResponse arg1) throws Exception {   // TODO Auto-generated method stub      System.out.println("START >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");   System.out.println(noticeService.getClassName());   System.out.println("END >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");      myHome.myHomeInfo();      return null;  } }

 

board-config.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"  xmlns:context="http://www.springframework.org/schema/context"  xmlns:p="http://www.springframework.org/schema/p"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-3.0.xsd">  <context:annotation-config/>    <!-- 각종 bean 설정 -->  <bean id="boardService" class="service.BoardService"></bean>   </beans>

 

spring301-servlet.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"  xmlns:context="http://www.springframework.org/schema/context"  xmlns:p="http://www.springframework.org/schema/p"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-3.0.xsd">  <context:annotation-config/>    <context:component-scan base-package="controller"/>  <context:component-scan base-package="service"/>  <context:component-scan base-package="config.total"/>    <!-- HandlerMapping 설정 -->  <bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">   <property name="mappings">    <props>     <prop key="/abstract.sp">abstractController</prop>    </props>   </property>  </bean>    <!-- 각종 bean 설정 -->  <!-- bean id="springConfig" class="config.SpringConfig"></bean -->   </beans>

@Configuration 어노테이션이 적용된 클래스는 @Component 어노테이션이 적용된 클래스와 마찬가지로 컴포넌트 스캔 대상임.

 

 

결과

START >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BoardService NoticeService END >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> MyHome02, Y

 

 

 

[참고자료] Spring 3.0 프로그래밍 - 최범균