spring半自动代理

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1、被代理类接口Person.java

 package com.xiaostudy;
 
 /**
  * @desc 被代理类接口
  *
  * @author xiaostudy
  *
  */
 public interface Person {
 
     public void add();
     public void update();
     public void delete();
 }

2、被代理类PersonImple.java

 package com.xiaostudy;
 
 /**
  * @desc 被代理类
  *
  * @author xiaostudy
  *
  */
 public class PersonImple implements Person {
 
     /**
      * @desc 实现接口方法
      */
     public void add() {
         System.out.println("add()>>>>>>>>");
     }
 
     @Override
     public void update() {
         System.out.println("update()>>>>>>>>");
     }
 
     @Override
     public void delete() {
         System.out.println("delete()>>>>>>>>");
     }
 
 }

3、切面类MyAdvice.java

 package com.xiaostudy;
 
 import org.aopalliance.intercept.MethodInterceptor;
 import org.aopalliance.intercept.MethodInvocation;
 
 /**
  * @desc 切面类
  *
  * @author xiaostudy
  *
  */
 public class MyAdvice implements MethodInterceptor {
 
     /**
      * @desc 环绕通知
      */
     @Override
     public Object invoke(MethodInvocation method) throws Throwable {
         System.out.println("日记开始>>>>>>>>>>>");
         method.proceed();
         System.out.println("日记结束<<<<<<<<<<<<");
         return null;
     }
 
 }

4、spring配置文件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"
        xsi:schemaLocation="http://www.springframework.org/schema/beans
                               http://www.springframework.org/schema/beans/spring-beans.xsd">
     <!-- 创建被代理类 -->
     <bean id="person" class="com.xiaostudy.PersonImple"></bean>
     <!-- 创建切面类 -->
     <bean id="advice" class="com.xiaostudy.MyAdvice"></bean>
     <!-- 创建代理类 -->
     <bean id="proxyPerson" class="org.springframework.aop.framework.ProxyFactoryBean">
         <!-- 把被代理类接口引入进来 -->
         <property name="interfaces" value="com.xiaostudy.Person"></property>
         <!-- 把被代理类引入进来 -->
         <property name="target" ref="person"></property>
         <!-- 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 -->
         <property name="interceptorNames" value="advice"></property>
         <!-- 非必须项：value为true表示强制使用cglib代理 -->
         <property name="optimize" value="true"></property>
     </bean>
 </beans>

5、测试类Test.java

 package com.xiaostudy;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 /**
  * @desc 测试类
  *
  * @author xiaostudy
  *
  */
 public class Test {
 
     public static void main(String[] args) {
         ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
         Person person = ac.getBean("proxyPerson", Person.class);
         person.add();
         person.update();
         person.delete();
     }
 
 }

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