spring半自动代理

---

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();
    }

}

---