Simple before Advice Spring Demo

Simple before Advice Spring Demo

src\Test.java

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import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.target.Service;

public class Test {

                public static void main(String[] args) {

                                ClassPathXmlApplicationContext container=new ClassPathXmlApplicationContext("applicationContext.xml");

                                Service target =(Service)container.getBean("proxy");

                                System.out.println("The result is :"+target.addall(1, 2));

               

                }

}

src\applicationContext.xml

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<?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:p="http://www.springframework.org/schema/p"

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

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

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

       http://www.springframework.org/schema/beans/spring-beans-2.5.xsd

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

       http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

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

       http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

                <bean id="target" class="com.target.Service"/>

                <bean id="beforeadvice" class="com.aspect.Beforeadvice"/>

                <bean id="aspect4"  class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">

                                  <property name="advice">

                                                 <ref local="beforeadvice"/>

                                  </property>

                                  <property name="patterns">

                                                 <value>.*add.*</value>

                                  </property>

                </bean>

                <bean id="proxy" class="org.springframework.aop.framework.ProxyFactoryBean">

                                                <property name="target">

                                                                <ref local="target"/>

                                                </property>

                                                <property name="interceptorNames">

                                                                <list>

                                                                                <value>aspect4</value>

                                                               

                                                                </list>

                                                </property>

                </bean>

</beans>

src\com\aspect\Beforeadvice.java

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package com.aspect;

import java.lang.reflect.Method;

import org.springframework.aop.MethodBeforeAdvice;

public class Beforeadvice implements MethodBeforeAdvice {

                @Override

                public void before(Method arg0, Object[] arg1, Object arg2)

                                                throws Throwable {

                               

                                System.out.println("Invoking method:"+arg0);

                                System.out.println("The arguments to the method are:"+arg1[0]+"and"+arg1[1]);

                                System.out.println("The target is :"+arg2 );

                }

}

src\com\target\Service.java

====================================================================================

package com.target;

public class Service {

               

                public int addall(int a,int b){

                               

                                return a+b;

                }

}