通过实现[color=red]org.aopalliance.intercept.MethodInterceptor[/color]接口来实现环绕通知:
Spring配置文件beans-around-proxy.xml:
测试:
输出:
Skoda 4S shop
Car name: Superb, price: 220000
Give 200 maintenance coupon via around proxy
调试程序,vehicle使用JDK的代理生成:
[img]http://dl2.iteye.com/upload/attachment/0096/0586/dd3e351b-8f62-3618-8e0d-2a7a3cffec3b.png[/img]
public class CarAroundProxy implements MethodInterceptor {
@Override
public Object invoke(MethodInvocation invocation) throws Throwable {
System.out.println("Skoda 4S shop");
Object result = invocation.proceed();
System.out.println("Give 200 maintenance coupon via around proxy");
return result;
}
}
Spring配置文件beans-around-proxy.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"
default-autowire="byName">
<bean id="car" class="com.john.spring.aop.Car">
<property name="name" value="Superb" />
<property name="price" value="220000" />
</bean>
<bean id="carAroundProxy" class="com.john.spring.aop.CarAroundProxy" />
<!-- 通过ProxyFactoryBean来生成实现指定接口,拦截指定对象方法的代理类 -->
<bean id="proxyBean" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces"><!-- 代理需实现的接口 -->
<value>com.john.spring.aop.Vehicle</value>
</property>
<property name="interceptorNames"><!-- 拦截器名称列表 -->
<list>
<value>carAroundProxy</value>
</list>
</property>
<property name="target"><!-- 目标对象 -->
<ref bean="car" />
</property>
</bean>
</beans>
测试:
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext(new String[] { "beans-around-proxy.xml" });
Vehicle vehicle = (Vehicle) ctx.getBean("proxyBean");
vehicle.info();
}
输出:
Skoda 4S shop
Car name: Superb, price: 220000
Give 200 maintenance coupon via around proxy
调试程序,vehicle使用JDK的代理生成:
[img]http://dl2.iteye.com/upload/attachment/0096/0586/dd3e351b-8f62-3618-8e0d-2a7a3cffec3b.png[/img]