基于API 的spring aop

接口类

package cn.com.gan.spring.aop;

public interface IHello {
public void SayHello();
public void sayHelloAgain();
}

实现类

package cn.com.gan.spring.aop;

public class ImpHello implements IHello {

	@Override
	public void SayHello() {
    System.out.println("hello everybody！");
	}
	@Override
   public void sayHelloAgain(){
	   System.out.println("hello everybody again");
   }
}

advice类(aspect)

package cn.com.gan.spring.aop;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class LoggerBefore implements MethodBeforeAdvice {

	@Override
	public void before(Method method, Object[] args, Object target)
			throws Throwable {
		System.out.println("我在方法前插入日志");
	}

}
package cn.com.gan.spring.aop;

import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;

public class LoggerAfter implements AfterReturningAdvice {

	@Override
	public void afterReturning(Object returnValue, Method method,
			Object[] args, Object target) throws Throwable {
		System.out.println("打完招呼了！");
		
	}

}
package cn.com.gan.spring.aop;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class loggerAdvisor implements MethodInterceptor {

	@Override
	public Object invoke(MethodInvocation object) throws Throwable {
		Object o=null;
		try{
	    	System.out.println("记录日志");
	    }finally{
	    	o=object.proceed();
	    	System.out.println("记录完毕");
	    }
	    return o;
	}

}

操作类

package cn.com.gan.spring.aop;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringManager {
public static void main(String[] args){
	ApplicationContext ac=new ClassPathXmlApplicationContext("applicationAopContext.xml");
	IHello hello=(IHello)ac.getBean("proxyhello");
	hello.SayHello();
	hello.sayHelloAgain();
}
}

配置文件

<?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"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd ">
	<bean id="hello" class="cn.com.gan.spring.aop.ImpHello"></bean>
	<bean id="loggera" class="cn.com.gan.spring.aop.LoggerAfter"></bean>
	<bean id="loggerb" class="cn.com.gan.spring.aop.LoggerBefore"></bean>
<bean id="logger" class="cn.com.gan.spring.aop.loggerAdvisor"></bean>
	<bean id="proxyhello"     class="org.springframework.aop.framework.ProxyFactoryBean">
		<property name="proxyInterfaces">
			<value>cn.com.gan.spring.aop.IHello</value>
		</property>
		<property name="target">
			<ref local="hello" />
		</property>
		<property name="interceptorNames">
			<list>
				<value>loggerb</value>
                                <value>loggera</value>
                                <value>logger</value>
			</list>
		</property>
	</bean>
</beans>

advice执行顺序 先执行loggerb中方法 ，然后执行logger 最后执行loggera。
这种方式的话在IHello接口中定义的所有方法都会被执行advice。如果限定那些方法要执行的话就要用到advisor(pointcut)。