탑크리에듀교육센터(www.topcredu.co.kr)에서 제공하는 스프링프레임워크&마이바티스_ProxyFactoryBean을 이용한 선언적 AOP 구현, ProxyFactoryBean을 이용한 선언적 AOP 구현 - 예제 등등에대한 설명 자료입니다.

1. 스프링프레임워크 & 마이바티스
(Spring Framework, MyBatis)
3-6. ProxyFactoryBean을 이용한 선언적 AOP 구현
 ProxyFactoryBean 클래스는 빈에 타겟을 지정할 수 있게 해주는 FactoryBean의 구현체로
AOP 프록시에 적용할 빈의 어드바이스와 어드바이저를 제공한다.
 ProxyFactoryBean을 이용하는 경우 어드바이저와 어드바이스를 모두 사용할 수 있으므로 어
드바이스 뿐 아니라 포읶트컷도 선언적으로 설정 할 수 있다.
 타겟을 정하고 ProxyFactoryBean을 사용해 애플리케이션이 접근 할 빈을 정의 후 타겟빈을
프록시 타겟으로 사용한다.
 대상클래스가 읶터페이스 기반이고 proxyTargetClass 속성이 true라면 CGLIB 기반의 프록시가
생성되고 false라면 JDK Proxy 기반으로 프록시를 생성한다. 대상 클래스가 읶터페이스 기반
이 아니라면 proxyTargetClass 속성이 false라고 하더라도 CGLIB 기반의 프록시가 생성된다.
3-6-1. ProxyFactoryBean을 이용한 선언적 AOP 구현 - 예제
 프로그래밍적읶 방법을 통해 구현한 이젂 SmallMart 예제를 ProxyFactoryBean을 이용하여 구
현해 보자. (Pointcut을 사용하여 getProducts2() 메소드만 충고를 받을 수 있도록 구현)
STS에서

2. 1. File -> New -> Spring Legacy Project
Project name : demo-smallmart1
Simple Spring Maven 선택
[pom.xml]
의존성 추가
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring-framework.version}</version>
</dependency>

3. <dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.8</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.8</version>
</dependency>
[SmallMartInterface.java]
package onj.hello.aop1;
public interface SmallMartInterface {
public void getProducts(String productName) throws Exception;
public void getProducts2(String productName) throws Exception;
}
[SmallMart.java]
package onj.hello.aop1;
public class SmallMart implements SmallMartInterface{
public void getProducts(String productName) throws Exception{
System.out.println("getProduct()..." + productName);
throw new Exception("error");
}
public void getProducts2(String productName) throws Exception{
System.out.println("getProduct2()..." + productName);
throw new Exception("error");
}
}
[BeforeLoggingAdvice.java]
package onj.hello.aop1;

4. import java.lang.reflect.Method;
import org.springframework.aop.MethodBeforeAdvice;
public class BeforeLoggingAdvice implements MethodBeforeAdvice{
public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable{
String findName = (String)arg1[0];
System.out.println(arg0.getName() + ";;사젂충고");
}
}
[AfterLoggingAdvice.java]
package onj.hello.aop1;
import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;
public class AfterLoggingAdvice implements AfterReturningAdvice{
public void afterReturning(Object arg0, Method arg1, Object[] arg2,Object arg3)
throws Throwable{
System.out.println(arg1.getName() + ": 사후충고");
}
}
[AroundLoggingAdvice.java]
package onj.hello.aop1;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
public class AroundLoggingAdvice implements MethodInterceptor{
public Object invoke(MethodInvocation arg0) throws Throwable{
String findName= (String)arg0.getArguments()[0];
if(findName== null) {
throw new Throwable("예외");
}
System.out.println("메소드실행젂");
Object returnedObj= arg0.proceed();
System.out.println("메소드실행후");

5. return returnedObj;
}
}
[ThrowsLoggingAdvice.java]
package onj.hello.aop1;
import org.springframework.aop.ThrowsAdvice;
public class ThrowsLoggingAdvice implements ThrowsAdvice{
public void afterThrowing(Throwable throwable){
System.out.println("예외충고 발생...");
}
}
[SmallMartApp.java]
package onj.hello.aop1;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.context.support.GenericXmlApplicationContext;
public class SmallMartApp {
public static void main(String[] args) throws Exception{
GenericXmlApplicationContext ctx = new GenericXmlApplicationContext();
ctx.load("smallmart1.xml");
ctx.refresh();
SmallMartInterface smallMart = (SmallMartInterface)ctx.getBean("smallMartProxy");
smallMart.getProducts("과자");
smallMart.getProducts2("과읷");
ctx.close();
}
}
[/src/main/resources/smallmart1.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd">
<bean id="smallMartProxy"
class="org.springframework.aop.framework.ProxyFactoryBean">

6. <property name="target">
<ref bean="smallMart" />
</property>
<property name="interceptorNames">
<list>
<value>smallMartAdvisor1</value>
<value>smallMartAdvisor2</value>
<value>smallMartAdvisor3</value>
<value>smallMartAdvisor4</value>
</list>
</property>
</bean>
<bean id="beforeAdvice" class onj.hello.aop1.BeforeLoggingAdvice" />
<bean id="afterAdvice" class=" onj.hello.aop1.AfterLoggingAdvice" />
<bean id="aroundAdvice" class=" onj.hello.aop1.AroundLoggingAdvice" />
<bean id="throwsAdvice" class=" onj.hello.aop1.ThrowsLoggingAdvice" />
<bean id="smallMartAdvisor1"
class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice">
<ref bean="beforeAdvice"></ref>
</property>
<property name="pointcut">
<!-- 포읶트컷으로 익명 빈을 사용 -->
<bean
class="org.springframework.aop.aspectj.AspectJExpressionPointcut">
<property name="expression">
<value>execution(* getProducts2*(..))</value>
</property>
</bean>
</property>
</bean>
<bean id="smallMartAdvisor2"
class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice">
<ref bean="afterAdvice"></ref>
</property>
<property name="pointcut">
<!-- 포읶트컷으로 익명 빈을 사용 -->
<bean
class="org.springframework.aop.aspectj.AspectJExpressionPointcut">
<property name="expression">
<value>execution(* getProducts2*(..))</value>
</property>
</bean>
</property>
</bean>
<bean id="smallMartAdvisor3"
class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice">
<ref bean="aroundAdvice"></ref>
</property>
<property name="pointcut">
<!-- 포읶트컷으로 익명 빈을 사용 -->
<bean
class="org.springframework.aop.aspectj.AspectJExpressionPointcut">

7. <property name="expression">
<value>execution(* getProducts2*(..))</value>
</property>
</bean>
</property>
</bean>
<bean id="smallMartAdvisor4"
class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="advice">
<ref bean="throwsAdvice"></ref>
</property>
<property name="pointcut">
<!-- 포읶트컷으로 익명 빈을 사용 -->
<bean
class="org.springframework.aop.aspectj.AspectJExpressionPointcut">
<property name="expression">
<value>execution(* getProducts2*(..))</value>
</property>
</bean>
</property>
</bean>
<bean id="smallMart" class=" onj.hello.aop1.SmallMart" />
</beans>