[22] @AspectJ 사용 AOP 예제 1

 

>>>>>>>>>>>>> @AspectJ 사용 AOP 예제 1 >>>>>>>>>>>>>>>>>>

 

------------------------------------------------------------Service.java
package part2;

public interface Service {
    public void first();
    public void first(String str);
    public void second();
    public String third();
    public void fourth();
    public void fifth();
}
------------------------------------------------------------ServiceImp.java
package part2;

public class ServiceImp implements Service {
    public ServiceImp() {
        System.out.println("생성자");
    }
   
    @Override
    public void first() {
        System.out.println("first()");
    }
   
    @Override
    public void first(String str) {
        System.out.println(str+"first()");
       
    }

    @Override
    public void second() {
      System.out.println("second()");
    }

    @Override
    public String third() {
        System.out.println("third()");
        return "java";
    }

    @Override
    public void fourth() {
        System.out.println("fourth()");
    }

    @Override
    public void fifth() {
        int num[]=new int[3];
        num[4]=10;
    }

}
------------------------------------------------------------aop.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:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
                           http://www.springframework.org/schema/aop
                           http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

<!-- annotation을 이용한 AOP설정을 위해 아래와 같이 명시한다 -->
<aop:aspectj-autoproxy/>

<!-- Aspect 빈 객체 선언 -->
<bean name="commAspect" class="part2.AopCommon"/>

<!-- Target 빈 객체 선언 -->
<bean name="svc" class="part2.ServiceImp"/>

</beans>
------------------------------------------------------------AopCommon.java
package part2;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

@Aspect
public class AopCommon {
    @Before("execution(* part2.ServiceImp.first(..))")
    public void commMethod1(){
        System.out.println("선행 공통메소드()");
    }
    @After("execution(* part2.ServiceImp.second(..))")
    public void commMethod2(){
        System.out.println("후행 공통메소드()");
    }
    @AfterReturning(pointcut="execution(* part2.ServiceImp.third(..))",returning="ret")
    public void commMethod3(Object ret){
        System.out.println("commMethod3:"+ret.toString());
    }
    @Around("execution(* part2.ServiceImp.fourth(..))")
    public void commMethod4(ProceedingJoinPoint joinpoint){
        System.out.println("target 실행전");
        try{
            joinpoint.proceed();
        }catch(Throwable e){
            e.printStackTrace();
        }
        System.out.println("target 실행후");
    }
    @AfterThrowing(pointcut="execution(* part2.ServiceImp.fifth(..))",throwing="thr")
    public void commMethod5(ArrayIndexOutOfBoundsException thr){
        System.out.println("commMethod5:"+thr.toString());
    }
}
------------------------------------------------------------ServiceMain.java
package part2;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

public class ServiceMain {
    public static void main(String[] args) {
        ApplicationContext context=new FileSystemXmlApplicationContext("src/part2/aop.xml");
        Service svc=(Service)context.getBean("svc");
        //svc.first("korea");
        //svc.first();
        //svc.second();
        //svc.third();
        //svc.fourth();
        try{
            svc.fifth();
        }catch(ArrayIndexOutOfBoundsException ex){}
    }
}