spring半自动代理

1、被代理类接口Person.java

 1 package com.xiaostudy;
 2 
 3 /**
 4  * @desc 被代理类接口
 5  * 
 6  * @author xiaostudy
 7  *
 8  */
 9 public interface Person {
10 
11     public void add();
12     public void update();
13     public void delete();
14 }

2、被代理类PersonImple.java

 1 package com.xiaostudy;
 2 
 3 /**
 4  * @desc 被代理类
 5  * 
 6  * @author xiaostudy
 7  *
 8  */
 9 public class PersonImple implements Person {
10 
11     /**
12      * @desc 实现接口方法
13      */
14     public void add() {
15         System.out.println("add()>>>>>>>>");
16     }
17 
18     @Override
19     public void update() {
20         System.out.println("update()>>>>>>>>");
21     }
22 
23     @Override
24     public void delete() {
25         System.out.println("delete()>>>>>>>>");
26     }
27     
28 }

3、切面类MyAdvice.java

 1 package com.xiaostudy;
 2 
 3 import org.aopalliance.intercept.MethodInterceptor;
 4 import org.aopalliance.intercept.MethodInvocation;
 5 
 6 /**
 7  * @desc 切面类
 8  * 
 9  * @author xiaostudy
10  *
11  */
12 public class MyAdvice implements MethodInterceptor {
13     
14     /**
15      * @desc 环绕通知
16      */
17     @Override
18     public Object invoke(MethodInvocation method) throws Throwable {
19         System.out.println("日记开始>>>>>>>>>>>");
20         method.proceed();
21         System.out.println("日记结束<<<<<<<<<<<<");
22         return null;
23     }
24 
25 }

4、spring配置文件applicationContext.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xsi:schemaLocation="http://www.springframework.org/schema/beans 
 5                               http://www.springframework.org/schema/beans/spring-beans.xsd">
 6     <!-- 创建被代理类 -->
 7     <bean id="person" class="com.xiaostudy.PersonImple"></bean>
 8     <!-- 创建切面类 -->
 9     <bean id="advice" class="com.xiaostudy.MyAdvice"></bean>
10     <!-- 创建代理类 -->
11     <bean id="proxyPerson" class="org.springframework.aop.framework.ProxyFactoryBean">
12         <!-- 把被代理类接口引入进来 -->
13         <property name="interfaces" value="com.xiaostudy.Person"></property>
14         <!-- 把被代理类引入进来 -->
15         <property name="target" ref="person"></property>
16         <!-- 把切面类引入进来，是以字符串形式引入，所以是用value，而不是用ref -->
17         <property name="interceptorNames" value="advice"></property>
18         <!-- 非必须项：value为true表示强制使用cglib代理 -->
19         <property name="optimize" value="true"></property>
20     </bean>
21 </beans>

5、测试类Test.java

 1 package com.xiaostudy;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.support.ClassPathXmlApplicationContext;
 5 
 6 /**
 7  * @desc 测试类
 8  * 
 9  * @author xiaostudy
10  *
11  */
12 public class Test {
13 
14     public static void main(String[] args) {
15         ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
16         Person person = ac.getBean("proxyPerson", Person.class);
17         person.add();
18         person.update();
19         person.delete();
20     }
21 
22 }