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Example and Steps for Creating Advice-2

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Example and Steps for Creating Advice-2


Step3:- Following is the Aspect bean which has method Before Advice which will be called before the testAdvice method of the target object.





package com.visualbuilder.aop;



public class AdviceClass {

 public void beforeMethod(){

     System.out.println("This is the before method of Advice Class");

 }

}



Step4:-Declare all the beans in the config file i.e. beans.xml





<!-- this is the object that will be proxied by Spring's AOP infrastructure -->

    <bean id="service" class="com.visualbuilder.aop.ServiceImpl"/>

<!-- this is the actual advice itself -->

    <bean id="advice" class="com.visualbuilder.aop.AdviceClass"/>



Step5:-Declare the <aop:config> and <aop:aspect> with pointcuts and advice type settings.





  <aop:config>

        <aop:aspect ref="advice">

            <aop:pointcut id="beforeMethodExecution" expression="execution(* com.visualbuilder.aop.Service.testAdvice())"/>

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

        </aop:aspect>

    </aop:config>



So below is given the complete beans.xml File:-





<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

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

    <!-- this is the object that will be proxied by Spring's AOP infrastructure -->

    <bean id="service" class="com.visualbuilder.aop.ServiceImpl" />

    <!-- this is the actual advice itself -->

    <bean id="advice" class="com.visualbuilder.aop.AdviceClass" />

    <aop:config>

        <aop:aspect ref="advice">

            <aop:pointcut id="beforeMethodExecution"

                expression="execution(* com.visualbuilder.aop.Service.testAdvice())" />

            <aop:before pointcut-ref="beforeMethodExecution"

                method="beforeMethod" />

        </aop:aspect>

    </aop:config>

</beans>

 


                    
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