了解Spring Aspectj创建动态代理

Demo介绍， King和Queen两人都要专心做自己的工作，但是整理床铺，穿衣服，吃饭等锁事不想自己弄，于是喊了四个侍女(Servant)来照顾；

非配置方式

动态代理一：代理人安排King,Queen,Servant的事项顺序；

1.King和Queen对象

public interface KingInterface {
public void dowork();
}

@Component("king")
public class King implements KingInterface{

@Override
public void dowork() {
System.out.println("King doing!");
}

}

public interface QueenInterface {
public void dowork();
}

import org.springframework.stereotype.Component;

@Component("queen")
public class Queen implements QueenInterface {
public void dowork(){
System.out.println("queen doing....");

}
}

2.创建侍女对象

import org.springframework.stereotype.Component;

@Component("servant01")
public class Servant01{
public void makeBeds1(){
System.out.println("makeBeds1");
}

public void makeBeds2(){
System.out.println("makeBeds2");
}
}

import org.springframework.stereotype.Component;

@Component("servant02")
public class Servant02{
public void dress(){
System.out.println("dress");
}
}

import org.springframework.stereotype.Component;

@Component("servant03")
public class Servant03{
public void haveAMeal1(){
System.out.println("haveAMeal1");
}

public void haveAMeal2(){
System.out.println("haveAMeal2");
}
}

import org.springframework.stereotype.Component;

@Component("servant04")
public class Servant04{
public void undress(){
System.out.println("undress");
}
}

3.创建代理人

@Aspect
@Component
public class DynamicProxyFactory{
@Resource
private Servant01 servant01;
@Resource
private Servant02 servant02;
@Resource
private Servant03 servant03;
@Resource
private Servant04 servant04;

@Before("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void before() {
servant01.makeBeds1();
servant02.dress();
servant03.haveAMeal1();
}
@After("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void after(){
servant03.haveAMeal2();
servant01.makeBeds2();
servant04.undress();
}

}

4.ApplicationContext.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"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
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/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- 启用注解注入 -->
<context:annotation-config/>
<!-- 启用组件扫描 -->
<context:component-scan base-package="cn.com.xalead"/>
<!-- 启用aspectJ -->
<aop:aspectj-autoproxy/>
</beans>

动态代理二：Servant主动在King,Queen需要时做事；

1.King和Queen对象， 同上；

2.创建侍女对象

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
@Aspect
@Component("servant01")
public class Servant01 implements Ordered{
@Before("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void makeBeds1(){
System.out.println("makeBeds1");
}

@After("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void makeBeds2(){
System.out.println("makeBeds2");
}

@Override
public int getOrder() {
return 1;
}
}

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
@Aspect
@Component("servant02")
public class Servant02 implements Ordered{
@Before("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void dress(){
System.out.println("dress");
}

@Override
public int getOrder() {

return 2;
}
}

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
@Aspect
@Component("servant03")
public class Servant03 implements Ordered{
@Before("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void haveAMeal1(){
System.out.println("haveAMeal1");
}

@After("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void haveAMeal2(){
System.out.println("haveAMeal2");
}

@Override
public int getOrder() {
return 3;
}
}

import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
@Aspect
@Component("servant04")
public class Servant04 implements Ordered{
@After("execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))")
public void undress(){
System.out.println("undress");
}

@Override
public int getOrder() {
return 0;
}
}

3.ApplicationContext.xml同上

配置方式

1.King和Queen对象， 同上；

2.创建侍女对象

import org.springframework.stereotype.Component;
@Component("servant01")
public class Servant01{
public void makeBeds(){
System.out.println("makeBeds");
}
}

import org.springframework.stereotype.Component;
@Component("servant02")
public class Servant02{
public void dress(){
System.out.println("dress");
}
}

import org.springframework.stereotype.Component;
@Component("servant03")
public class Servant03{
public void haveAMeal(){
System.out.println("haveAMeal");
}
}

import org.springframework.stereotype.Component;
@Component("servant04")
public class Servant04{
public void undress(){
System.out.println("undress");
}
}

3.ApplicationContext.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"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
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/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- 启用注解注入 -->
<context:annotation-config/>
<!-- 启用组件扫描 -->
<context:component-scan base-package="cn.com.xalead"/>

<aop:config>
<aop:pointcut expression="execution(* cn.com.xalead.spring.QueenInterface.*(..)) || execution(* cn.com.xalead.spring.KingInterface.*(..))" id="allMethod"/>
<aop:aspect ref="servant01">
<aop:before method="makeBeds" pointcut-ref="allMethod"/>
</aop:aspect>
<aop:aspect ref="servant02">
<aop:before method="dress" pointcut-ref="allMethod"/>
</aop:aspect>
<aop:aspect ref="servant03">
<aop:before method="haveAMeal" pointcut-ref="allMethod"/>
</aop:aspect>
<aop:aspect ref="servant03">
<aop:after method="haveAMeal" pointcut-ref="allMethod"/>
</aop:aspect>
<aop:aspect ref="servant01">
<aop:after method="makeBeds" pointcut-ref="allMethod"/>
</aop:aspect>
<aop:aspect ref="servant04">
<aop:after method="undress" pointcut-ref="allMethod"/>
</aop:aspect>
</aop:config>
</beans>

测试运行代码

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import junit.framework.TestCase;

public class Test extends TestCase{
public void test1(){
BeanFactory factory = new ClassPathXmlApplicationContext("app*.xml");

QueenInterface queen = (QueenInterface)factory.getBean("queen");
queen.dowork();

System.out.println("----------------------------------------------");
KingInterface king = (KingInterface)factory.getBean("king");
king.dowork();
}
}

附： jar包目录图