本文主要是介绍了解Spring Aspectj创建动态代理,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
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{@Overridepublic 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{@Resourceprivate Servant01 servant01;@Resourceprivate Servant02 servant02;@Resourceprivate Servant03 servant03;@Resourceprivate 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.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsdhttp://www.springframework.org/schema/aophttp://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");}@Overridepublic 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");}@Overridepublic 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");}@Overridepublic 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");}@Overridepublic 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.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsdhttp://www.springframework.org/schema/aophttp://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
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