은성이의 프로그램X파일

package shop.common;

import org.aspectj.lang.JoinPoint;

import shop.service.InsufficientInventoryException;

public class OrderAspect {
 //꽃이나 책과 관련된 business로직 처리 도중 오류 발생시 호출된 advice메소드 작성
 //재고 부족시 - 꽃 재고 부족 : 주문량 - 15
 
 public void orderLogger(Exception ex){
  //주문시 오류처리
  System.out.println("주문처리시 오류발생");
  System.out.print(ex.getMessage());
  if(ex instanceof InsufficientInventoryException){
   InsufficientInventoryException ie = (InsufficientInventoryException)ex;
   System.out.println(" : "+ie.getOrderCount());
  }
 }

}

package shop.data;

public class WareHouse {
 private static WareHouse instance=new WareHouse();
 private int flowerCount=10;
 private int bookCount=10;
 private WareHouse(){}
 public static WareHouse getInstance(){
  return instance;
 }
 public int getFlowerCount() {
  return flowerCount;
 }
 public int getBookCount() {
  return bookCount;
 }
 
}

package shop.service;

import shop.data.WareHouse;

public class BookServiceImpl implements StoreService {
 private WareHouse wareHouse;
 
 public BookServiceImpl() {
 }
 public BookServiceImpl(WareHouse wareHouse){
  this.wareHouse=wareHouse;
 }
 @Override
 public void sell(int count) throws InsufficientInventoryException{
  if(wareHouse.getBookCount()<count){
   throw new InsufficientInventoryException("Book 재고가 부족!",count);
  }
  System.out.println("책 "+count+"권 판매 ok!");
 }
}

package shop.service;

import shop.data.WareHouse;

public class FlowerServiceImpl implements StoreService {
 private WareHouse wareHouse; 
 public FlowerServiceImpl(WareHouse wareHouse) {
  super();
  this.wareHouse = wareHouse;
 }
 @Override
 public void sell(int count) throws InsufficientInventoryException {
  if(wareHouse.getFlowerCount()<count){
   throw new InsufficientInventoryException("꽃 재고 부족",count);
  }
  System.out.println("꽃 "+count+" 송이 판매!");
 }
}

package shop.service;

//재고 부족시 발생시킬 Exception객체
public class InsufficientInventoryException extends Exception {
 private int orderCount;
 public InsufficientInventoryException() {
 }

 public InsufficientInventoryException(String message, int orderCount) {
  super(message);
  this.orderCount = orderCount;
 }
 public int getOrderCount(){
  return orderCount;
 }

}

package shop.service;

public interface StoreService {

 public abstract void sell(int count) throws InsufficientInventoryException;

}

package shop.test;

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

import shop.service.InsufficientInventoryException;
import shop.service.StoreService;

public class Test {
 public static void main(String[] args) {
  ApplicationContext context
          = new ClassPathXmlApplicationContext("shop.xml");
  StoreService fs=(StoreService)context.getBean("flower");
  StoreService bs=(StoreService)context.getBean("book");  
  try {
   fs.sell(80);
  } catch (InsufficientInventoryException e) {
   System.out.println(e.getMessage());
  }
  try {
   bs.sell(1);
  } catch (InsufficientInventoryException e) {
   System.out.println(e.getMessage());
  }
  
 }
}
//로그메세지 : 주문량 - 주문개수
//꽃 재고 부족 : 주문량 - 15

<?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 id="wh" class="shop.data.WareHouse" factory-method="getInstance"/><!-- 싱글턴 패턴으로 작성이 되어 있어서 factory-method="getInstance"를 사용-->
 <bean name="book" class="shop.service.BookServiceImpl">
  <constructor-arg ref="wh"/>
 </bean>
 <bean name="flower" class="shop.service.FlowerServiceImpl">
  <constructor-arg ref="wh"/>
 </bean>
 
 <!-- 공통로직 처리 bean -->
 <bean name="orderAspect" class="shop.common.OrderAspect"/>
 <aop:config>
  <aop:aspect id="logger" ref="orderAspect">
   <aop:after-throwing method="orderLogger" pointcut="execution(public * shop..*Service.sell(..))" throwing="ex"/>
  </aop:aspect>
 </aop:config>

</beans>