Spring | AOP BeforeAdvice / After Returning / Throwing Advice 구현

BeforeAdvice 구현하기

logBeforeAdvice 설정 추가

setting.xml

 

logBeforeAdvice.java

package spring.aop.advice;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class logBeforeAdvice implements MethodBeforeAdvice {

	@Override
	public void before(Method arg0, Object[] arg1, Object arg2) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("앞에서 실행될 로직");
	}
	
}

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After Returning / Throwing Advice  구현하기

LogAfterReturningAdvice 설정 추가

setting.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:p="http://www.springframework.org/schema/p"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd">
	
	
	<bean id="target" class="spring.aop.entity.NewlecExam" p:kor="1"  p:eng="1"  p:math="1"  p:com="1"/>
	<bean id="logAroundAdvice" class="spring.aop.advice.LogAroundAdvice" />
	<bean id="logBeforeAdvice" class="spring.aop.advice.LogBeforeAdvice" />
	<bean id="logAfterReturningAdvice" class="spring.aop.advice.LogAfterReturningAdvice" />
	<bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean">
	
		<property name="target" ref="target" />
		<property name="interceptorNames">
			<list>
				<value>logAroundAdvice</value>
				<value>logBeforeAdvice</value>
				<value>logAfterReturningAdvice</value>
			</list>
		</property>
	</bean>
	
</beans>

LogAfterReturningAdvice.java

package spring.aop.advice;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

public class LogAfterReturningAdvice implements AfterReturningAdvice {

	@Override
	public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
		// TODO Auto-generated method stub
		System.out.println("returnValue : " + returnValue + ", method : " + method.getName());
	} 
	
}

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LogAfterThrowingAdvice 구현하기

Before나 After 예외가 발생했을 경우 실행됨

 

예외상황을 만들어 주는 코드 작성

100 이상의 점수를 입력할 경우 예외처리 

NewlecExam.java

국어성적 101점을 주었다.

setting.xml

 

LogAfterThrowingAdvice.java

package spring.aop.advice;

import org.springframework.aop.ThrowsAdvice;

public class LogAfterThrowingAdvice implements ThrowsAdvice {
	public void afterThrowing(IllegalArgumentException e) throws Throwable {
		System.out.println("예외가 발생하였습니다. : " + e.getMessage());
	}
}

필요한 Exeption을 변경해서 사용할 수 있다.