springAOP : AfterThrowing

Employee.java

=========

package com.mohan;

public  class Employee{

          public void validate(int age)throws Exception{

          if(age<18){

                   throw new ArithmeticException("Not valid age");

          }

          else{

                   System.out.println("Thanks for vote");

          }

          }

         

}

     

TrackEmployee.java

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

package com.mohan;

import org.aspectj.lang.JoinPoint;

public class TrackEmployee{

                                  

          public void myadvice(JoinPoint jp,Throwable error)//it is advice

          {

            System.out.println("additional concern");

            System.out.println("Method Signature: "  + jp.getSignature());

            System.out.println("Exception is: "+error);

            System.out.println("end of after throwing advice...");

          }

}

Beans.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"

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

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

          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

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

          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd ">

<aop:aspectj-autoproxy />

<bean id="empBean" class="com.mohan.Employee">    </bean>      

<bean id="trackAspect" class="com.mohan.TrackEmployee"></bean>

                  

<aop:config>

  <aop:aspect id="myaspect" ref="trackAspect" >

     <!-- @AfterThrowing -->

     <aop:pointcut id="pointCutAfterThrowing"      expression="execution(* com.mohan.Employee.*(..))" />

     <aop:after-throwing method="myadvice" throwing="error" pointcut-ref="pointCutAfterThrowing" />

  </aop:aspect>

</aop:config>

         

</beans>

Test.java

======

package com.mohan;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test{

          public static void main(String[] args){

            ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");

            Employee op = (Employee) context.getBean("empBean");

            System.out.println("calling validate...");

            try{

                op.validate(19);

            }catch(Exception e){System.out.println(e);}

            System.out.println("calling validate again...");

            try{

                op.validate(11);

            }catch(Exception e){System.out.println(e);}

          }

}