Advice 타입 별 클래스 작성 <aop:after>, <aop:around>

<aop:after>

  - After Advice는 대상 객체의 메서드가 정상적으로 실행되었는지 아니면 예오를 발생 시켰는지의 여부에 상관없이 메서드 실행이 종료된 이후에 적용되는 Advice로서 try~catch~finally 블록에서 finally 블록과 비슷한 기능을 수행

 

<aop:around>

  - Around Advice는 Before, After Returning, After Throwing, After Advice를 모두 구현할 수 있는 Advice

  - Around Advice를 구현한 메서더는 org.aspectj.lang.ProceedingJoinPoint를 반드시 첫 번째 파라미터로 지정해야 함

 

 

FaqBoardImpl.java 

package sp.aop.service; import org.springframework.stereotype.Component;   @Component("faqBoard") public class FaqBoardImpl implements Board {  @Override  public String getBoardName() {   // TODO Auto-generated method stub   return "FAQ Board";  } }

 

NoticeBoardImpl.java

package sp.aop.service; import org.springframework.stereotype.Component;   @Component("noticeBoard") public class NoticeBoardImpl implements Board {  @Override  public String getBoardName() {   // TODO Auto-generated method stub   return "Notice Board";  } }

 

BoardController.java

package sp.aop.controller; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import sp.aop.service.Board;   public class BoardController extends   org.springframework.web.servlet.mvc.AbstractController {    @Resource(name="noticeBoard")  private Board board;    @Override  protected ModelAndView handleRequestInternal(HttpServletRequest arg0,    HttpServletResponse arg1) throws Exception {   // TODO Auto-generated method stub      System.out.println("<<===== START =====>>");   System.out.println("Board Name-1 : " + board.getBoardName());   System.out.println("<<===== RUNNING =====>>");   System.out.println("Board Name-2 : " + board.getBoardName());   System.out.println("<<===== END =====>>");      return null;  } }

 

 

package sp.aop.advice; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint;   public class LogAdvice {  public Object logPrint(ProceedingJoinPoint joinPoint) throws Throwable{   System.out.println("***** START *****");   try{    System.out.println("*");    System.out.println("**");        Object ret = joinPoint.proceed();        System.out.println("***");    System.out.println("****");        return ret;   }finally{    System.out.println("***** END *****");   }  }    public void afterFinally(JoinPoint joinPoint){   System.out.println("***** after finally *****");   System.out.println("joinPoint : " + joinPoint.toString());  } } ****************************************************************************************** ●메서드에는 파라미터를 갖지 않음 ●대상 객체 및 호출되는 메서드에 메서드에 대한 정보나 전달되는 파라미터에 대한 정보가 필요한 경우 org.aspectj.lang.JoinPoint를 파라미터로 명시하면 됨.

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"  xmlns:aop="http://www.springframework.org/schema/aop"  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        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">    <context:annotation-config/>  <context:component-scan base-package="sp.aop.service"/>     <!-- HandlerMapping 설정 -->  <bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">   <property name="mappings">    <props>     <prop key="/aoptest01.sp">boardController</prop>    </props>   </property>  </bean>    <!-- 각종 bean 설정 -->  <bean id="boardController" class="sp.aop.controller.BoardController"></bean>    <!-- Advice 클래스를 빈으로 등록 -->  <bean id="timeCheckAdvice" class="sp.aop.advice.TimeCheckAdvice"></bean>  <bean id="logAspect" class="sp.aop.advice.LogAdvice"></bean>    <!-- Aspect 설정 : Advice를 어떤 PointCut에 적용할 지 설정 -->  <aop:config>   <aop:aspect id="logPrtAspect" ref="logAspect">    <aop:pointcut id="logPrint" expression="execution(* sp.aop..*.*(..))"/>    <aop:after pointcut-ref="logPrint" method="afterFinally" />   </aop:aspect>  </aop:config>   </beans>

<<===== START =====>> ***** after finally ***** joinPoint : execution(String sp.aop.service.Board.getBoardName()) Board Name-1 : Notice Board <<===== RUNNING =====>> ***** after finally ***** joinPoint : execution(String sp.aop.service.Board.getBoardName()) Board Name-2 : Notice Board <<===== END =====>>

 

 

package sp.aop.advice; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint;   public class LogAdvice {  public Object logPrint(ProceedingJoinPoint joinPoint) throws Throwable{   System.out.println("***** START *****");   try{    System.out.println("*");    System.out.println("**");        Object ret = joinPoint.proceed();        System.out.println("***");    System.out.println("****");        return ret;   }finally{    System.out.println("***** END *****");   }  }    public void afterFinally(JoinPoint joinPoint){   System.out.println("***** after finally *****");   System.out.println("joinPoint : " + joinPoint.toString());  } } ****************************************************************************************** ●Around Advice를 구현한 메서드는 org.aspectj.lang.ProceedingJoinPoint를 반디스 첫 번째 파라미터로 지정해야 함 - 그렇지 않을 경우 예외 발생 ●ProceedingJoinPoint의 proceed() 메서드를 호출하면 프록시 대상 객체의 실제 메서드를 호출하게 된다. 따라서 ProceedingJoinPoint.proceed() 메서드를 호출하기 전과 후에 필요한 작업을 수행할 수 있다.

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"  xmlns:aop="http://www.springframework.org/schema/aop"  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        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">  <context:annotation-config/>  <context:component-scan base-package="sp.aop.service"/>      <!-- HandlerMapping 설정 -->  <bean id="simpleUrlHandlerMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">   <property name="mappings">    <props>     <prop key="/aoptest01.sp">boardController</prop>    </props>   </property>  </bean>    <!-- 각종 bean 설정 -->  <bean id="boardController" class="sp.aop.controller.BoardController"></bean>    <!-- Advice 클래스를 빈으로 등록 -->  <bean id="timeCheckAdvice" class="sp.aop.advice.TimeCheckAdvice"></bean>  <bean id="logAspect" class="sp.aop.advice.LogAdvice"></bean>    <!-- Aspect 설정 : Advice를 어떤 PointCut에 적용할 지 설정 -->  <aop:config>   <aop:aspect id="logPrtAspect" ref="logAspect">    <aop:pointcut id="logPrint" expression="execution(* sp.aop..*.*(..))"/>    <aop:around pointcut-ref="logPrint" method="logPrint" />   </aop:aspect>  </aop:config>   </beans>

<<===== START =====>> ***** START ***** * ** *** **** ***** END ***** Board Name-1 : Notice Board <<===== RUNNING =====>> ***** START ***** * ** *** **** ***** END ***** Board Name-2 : Notice Board <<===== END =====>>

 

 

 

[참고자료] Spring 3.0 프로그래밍-최범균