Spring Aop 예 (인터페이스 구현)

단독 Aop 은 Xml 에 많은 설정 을 해 야 하기 때문에 Spring 에서 Spring 은 인 터 페 이 스 를 제공 하여 차단 하 는 방법 을 제공 하여 더욱 간편 하 게 합 니 다.
다음은 예 입 니 다.
beans.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:tx="http://www.springframework.org/schema/tx"
	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/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"
	default-lazy-init="false" default-autowire="no">
	<bean id="around" class="org.hzy.advices.AroundAdvice"></bean>
	<bean id="before" class="org.hzy.advices.BeforeAdvice"></bean>
	<bean id="after" class="org.hzy.advices.AfterAdvice"></bean>
	<bean id="student" class="org.hzy.dao.impl.StudentImpl"></bean>
	<aop:config>
		<aop:pointcut id="target" expression="execution(* org.hzy.dao.impl.StudentImpl.addStudent(..))"/>
		<!-- <aop:advisor id="be" advice-ref="before" pointcut-ref="target"/> -->
		<!-- <aop:advisor id="af" advice-ref="after" pointcut-ref="target"/> -->
		<aop:advisor id="ar" advice-ref="around" pointcut-ref="target"/><!--        ,           -->
	</aop:config>
</beans>

AroundAdvice.java

package org.hzy.advices;

import java.lang.reflect.Method;

import org.aopalliance.intercept.Invocation;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class AroundAdvice implements MethodInterceptor{//       

	public Object invoke(MethodInvocation arg0) throws Throwable {//arg0   struts2        actionInvocation
		// TODO Auto-generated method stub
		System.out.println("      !!!!!!!!");
		Method me=arg0.getMethod();
		System.out.println(me.getName());
		System.out.println(arg0.getArguments()[0]);
		Object result=null;
		String stu_name=arg0.getArguments()[0].toString();
		if("hzy".equals(stu_name)){
			 result= arg0.proceed();
		}else{
			 System.out.println("    "+stu_name+"   dragon,      .");
		}
		return result;
	}
	
}

BeforeAdvice.java

package org.hzy.advices;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class BeforeAdvice implements MethodBeforeAdvice{//       

	public void before(Method method, Object[] args, Object target)
			throws Throwable {
		// TODO Auto-generated method stub
		System.out.println( "   BeforeAdvice  before  . " );
//		args[0]="hzy";
		System.out.println(args[0]);
	}
	
}

AfterAdvice.java

package org.hzy.advices;

import java.lang.reflect.Method;

import org.springframework.aop.AfterReturningAdvice;

public class AfterAdvice implements AfterReturningAdvice{//       

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

IStudent.java

package org.hzy.dao;

public interface IStudent {
	public void addStudent(String name);
}

StudentImpl.java

package org.hzy.dao.impl;

import org.hzy.dao.IStudent;

public class StudentImpl implements IStudent {

	public void addStudent(String name) {
		// TODO Auto-generated method stub
		System.out.println( "     " + name + "     Spring  ! " );
	}
	
}

package org.hzy.test;

import org.hzy.dao.IStudent;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest2 {
	public static void main(String[] args) {
		ApplicationContext ctx=new ClassPathXmlApplicationContext("beans1.xml");
		IStudent st=(IStudent) ctx.getBean("student");
		st.addStudent("aa");
	}
}

메모: 이것 은 Spring 의 Aop 모방 일 뿐 입 니 다. Aop 을 설정 하여 조작 할 수 있 습 니 다.