Spring学习（22）--- AOP之Advice应用（下）

（六）Advice parameters（advice带参数的情况）

例子：

修改MyAspect（添加around_init方法）：

package com.aop.schema;

import org.aspectj.lang.ProceedingJoinPoint;

/**

*

* 切面类

*

*/

public class MyAspect {

	public void before(){

		System.out.println("MyAspect.before");

	}

	public void afterreturning(){

		System.out.println("MyAspect.afterreturning");

	}

	public void afterthrowing(){

		System.out.println("MyAspect.afterthrowing");

	}

	public void after(){

		System.out.println("MyAspect.after");

	}

	public void around(ProceedingJoinPoint pjp) {

		try {

			System.out.println("MyAspect.around_1");

			Object obj=pjp.proceed();

			System.out.println("MyAspect.around_2");

		} catch (Throwable e) {

			e.printStackTrace();

		}

	}

	public void around_init(ProceedingJoinPoint pjp,String name,int age) {

		System.out.println(name+"  "+age);

		try {

			System.out.println("MyAspect.around_1");

			Object obj=pjp.proceed();

			System.out.println("MyAspect.around_2");

		} catch (Throwable e) {

			e.printStackTrace();

		}

	}

}

修改ApsectBiz类（添加init方法）：

package com.aop.schema;

/**

*

* 业务类

*

*/

public class ApsectBiz {

	public void biz(){

		System.out.println("ApsectBiz.biz");

		//throw new RuntimeException();  //故意抛出异常

	}

	public void init(String name,int age){

		System.out.println("ApsectBiz.init : "+ name +"  " +age);

	}

}

XML配置：

<?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"

        xmlns:context="http://www.springframework.org/schema/context"

        xsi:schemaLocation="http://www.springframework.org/schema/beans

            http://www.springframework.org/schema/beans/spring-beans-4.1.xsd

            http://www.springframework.org/schema/context

            http://www.springframework.org/schema/context/spring-context-4.1.xsd

            http://www.springframework.org/schema/aop

            http://www.springframework.org/schema/aop/spring-aop-4.1.xsd">

     <bean id="myAspect" class="com.aop.schema.MyAspect"></bean>

     <bean id="apsectBiz" class="com.aop.schema.ApsectBiz"></bean>

     <aop:config>

          <aop:aspect id="myAspectAOP" ref="myAspect">

          <!--  先注释掉，便于观察结果

            <aop:pointcut id="myPointcut" expression="execution(* com.aop.schema.ApsectBiz.*(..))" />

            <aop:before method="before" pointcut-ref="myPointcut"/>

            <aop:after-returning method="afterreturning" pointcut-ref="myPointcut"/>

            <aop:after-throwing method="afterthrowing" pointcut-ref="myPointcut"/>

            <aop:after method="after" pointcut-ref="myPointcut"/>

            <aop:around method="around" pointcut-ref="myPointcut"/>

           -->

            <aop:around method="around_init" pointcut="execution(* com.aop.schema.ApsectBiz.init(String,int)) and args(name,age)"/>

          </aop:aspect>

     </aop:config>

</beans>

单元测试：

package com.aop.schema;

import org.junit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class UnitTest {

	@Test

	public void test(){

		ApplicationContext context = new ClassPathXmlApplicationContext("classpath:spring-aop.xml");

		ApsectBiz biz = (ApsectBiz)context.getBean("apsectBiz");

		biz.init("Json",25);

	}

}

结果：

七月 09, 2015 11:48:42 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@118e0f0f: startup date [Thu Jul 09 23:48:42 CST 2015]; root of context hierarchy

七月 09, 2015 11:48:42 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [spring-aop.xml]

Json  25

MyAspect.around_1

ApsectBiz.init : Json  25

MyAspect.around_2