POJO 기반 AOP 구현 - Advice 클래스 작성(After Returning, After Throwing, After)- spring_aop_02_after[실습]

 

* MemberService interface만들기

 

 

 

 * aop.xml Spring AOP 만들기

 

 

* 실습

import java.util.ArrayList;

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

import aop.dto.MemberDTO;
import aop.service.MemberService;

public class TestMain {
 public static void main(String[] args) {
  ApplicationContext ctx = new ClassPathXmlApplicationContext("aop/config/aop.xml");
  MemberService service = (MemberService)ctx.getBean("memberService");
  MemberDTO mto = service.selectMemberById("abcde");
  System.out.println("main() : "+mto);
  ArrayList list = service.selectAllMember();
  System.out.println("main() : "+list);
  try{
   service.registerMember(null);
  }catch (Exception e) {
   System.out.println(e.getMessage());
  }
  
 }

}

 

package aop.advice;

import aop.dto.MemberDTO;

public class LoggerAdvice {
 //로그 남기는 공통로직 처리
 public void afterReturnLogger(){
  System.out.println("------------LoggerAdvice.afterReturnLogger 시작--------------");
  System.out.println("------------LoggerAdvice.afterReturnLogger 종료--------------");
 }
 public void afterReturnLogger2(Object ret){
  System.out.println("------------LoggerAdvice.afterReturnLogger2 시작--------------");
  System.out.println("ret : "+ret);
  if(ret instanceof MemberDTO){
   MemberDTO mto = (MemberDTO)ret;
   mto.setAge(1000);//mto는 객체로 주소가 이동하기 때문에 age의 값이 1000으로 변경(main에서 mto를 호출해도 age는 1000임)
  }
  System.out.println("------------LoggerAdvice.afterReturnLogger2 종료--------------");
 }
}

 

<?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-3.0.xsd
  http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
 
 <bean name="memberService" class="aop.service.MemberServiceImpl"/>
 <!-- 공통로직 -->
 <bean name="loggerAdvice" class="aop.advice.LoggerAdvice"/>
 <!-- aop설정 -->
 <aop:config>
  <aop:aspect id="afterAS" ref="loggerAdvice">
   <aop:after-returning pointcut="execution(* aop.service..*Service.*(..)) " method="afterReturnLogger"/>
   <aop:after-returning pointcut="within(aop.service.*ServiceImpl)" method="afterReturnLogger2" returning="ret"/>
  </aop:aspect>
 </aop:config>
</beans>

 

package aop.dto;

public class MemberDTO {
 private String id;
 private String name;
 private int age;
 public MemberDTO() {
  super();
 }
 public MemberDTO(String id, String name, int age) {
  super();
  this.id = id;
  this.name = name;
  this.age = age;
 }
 public String getId() {
  return id;
 }
 public void setId(String id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 @Override
 public String toString() {
  return "MemberDTO [id=" + id + ", name=" + name + ", age=" + age + "]";
 }
 @Override
 public int hashCode() {
  final int prime = 31;
  int result = 1;
  result = prime * result + age;
  result = prime * result + ((id == null) ? 0 : id.hashCode());
  result = prime * result + ((name == null) ? 0 : name.hashCode());
  return result;
 }
 @Override
 public boolean equals(Object obj) {
  if (this == obj)
   return true;
  if (obj == null)
   return false;
  if (getClass() != obj.getClass())
   return false;
  MemberDTO other = (MemberDTO) obj;
  if (age != other.age)
   return false;
  if (id == null) {
   if (other.id != null)
    return false;
  } else if (!id.equals(other.id))
   return false;
  if (name == null) {
   if (other.name != null)
    return false;
  } else if (!name.equals(other.name))
   return false;
  return true;
 }
 
}

 

package aop.service;

import java.util.ArrayList;

import aop.dto.MemberDTO;

public interface MemberService {

 public abstract MemberDTO selectMemberById(String id);

 public abstract ArrayList selectAllMember();

 public abstract void registerMember(MemberDTO mto);

 public abstract void modifyMember(MemberDTO mto);

}

 

package aop.service;

import java.util.ArrayList;

import aop.dto.MemberDTO;

public class MemberServiceImpl implements MemberService {

 @Override
 public MemberDTO selectMemberById(String id){
  System.out.println("MemberServiceImpl.selectMemberById() 실행");
  return new MemberDTO(id, "홍길동", 33);
 }
 
 @Override
 public ArrayList selectAllMember(){
  System.out.println("MemberServiceImpl.selectAllMember() 실행");
  return new ArrayList();
 }
 
 @Override
 public void registerMember(MemberDTO mto){
  System.out.println("MemberServiceImpl.registerMember(mto) 실행");
  throw new RuntimeException("가입도중 오류 발생");
 }
 
 @Override
 public void modifyMember(MemberDTO mto){
  System.out.println("MemberServiceImpl.modifyMember(mto) 실행");
  throw new RuntimeException("회원 정보 수정 도충 오류발생");
 }
}

 

* 결과

MemberServiceImpl.selectMemberById() 실행
------------LoggerAdvice.afterReturnLogger 시작--------------
------------LoggerAdvice.afterReturnLogger 종료--------------
------------LoggerAdvice.afterReturnLogger2 시작--------------
ret : MemberDTO [id=abcde, name=홍길동, age=33]
------------LoggerAdvice.afterReturnLogger2 종료--------------
main() : MemberDTO [id=abcde, name=홍길동, age=1000]
MemberServiceImpl.selectAllMember() 실행
------------LoggerAdvice.afterReturnLogger 시작--------------
------------LoggerAdvice.afterReturnLogger 종료--------------
------------LoggerAdvice.afterReturnLogger2 시작--------------
ret : []
------------LoggerAdvice.afterReturnLogger2 종료--------------
main() : []
MemberServiceImpl.registerMember(mto) 실행
가입도중 오류 발생