Spring AOP XML configuration

We'll learn how to configure aspects, advice and pointcuts using the traditional XML way.



package com.venkat.Spring.Aop;


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


import com.venkat.Spring.Aop.service.ShapeService;


public class AopTest {


public static void main(String args[])
{
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
ShapeService service=context.getBean("shapeService",ShapeService.class);
service.getCircle();
}
}

****************************************************************************

package com.venkat.Spring.Aop.Aspect;

public @interface Loggable {

}

********************************************************************************

package com.venkat.Spring.Aop.Aspect;

import org.aspectj.lang.ProceedingJoinPoint;

import org.aspectj.lang.annotation.Aspect;

@Aspect

public class LoggingAspect {

// @Pointcut("execution(*  get*())")

// public void allGetters(){}

// @Around("@annotation(com.venkat.Spring.Aop.Aspect.Loggable)")

public Object myAroundAdvice(ProceedingJoinPoint proceedingJoinPoint) 

{

Object returnValue=null;

try {

System.out.println("Before method Executed");

returnValue=proceedingJoinPoint.proceed();

System.out.println("After Method Executed....");

} catch (Throwable e) {

System.out.println("Around Advice throws exception");

}

System.out.println("After Finally executed........");

return returnValue;

}

}

*************************************************************************

package com.venkat.Spring.Aop.model;

public class Circle {

private String name;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

System.out.println("Setter method is called.....");

throw(new RuntimeException());

}

public String setNameAndReturning(String name) {

this.name = name;

System.out.println("Setter Method and return the value method executed....");

return name;

}

}

***********************************************************************

package com.venkat.Spring.Aop.model;

public class Triangle {

private String name;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

}

****************************************************************************

package com.venkat.Spring.Aop.service;

import com.venkat.Spring.Aop.Aspect.Loggable;

import com.venkat.Spring.Aop.model.Circle;

import com.venkat.Spring.Aop.model.Triangle;

public class ShapeService {

private Triangle triangle;

private Circle circle;

public Triangle getTriangle() {

return triangle;

}

public void setTriangle(Triangle triangle) {

this.triangle = triangle;

}

@Loggable

public Circle getCircle() {

return circle;

}

public void setCircle(Circle circle) {

this.circle = circle;

}

}

*********************************************************************************

<?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-2.0.xsd

http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd

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

<aop:aspectj-autoproxy/>

<bean name="triangle" class="com.venkat.Spring.Aop.model.Triangle">

<property name="name" value="triangle name"/>

</bean>

<bean name="circle" class="com.venkat.Spring.Aop.model.Circle">

<!-- <property name="name" value="circle name"/>  -->

</bean>

<bean name="shapeService" class="com.venkat.Spring.Aop.service.ShapeService">

<property name="triangle" ref="triangle"/>

<property name="circle" ref="circle"/>

</bean>

<bean  name="loggingAdviceBean" class="com.venkat.Spring.Aop.Aspect.LoggingAspect"/>

<aop:config>

<aop:aspect id="loggingAdvice" ref="loggingAdviceBean">

<aop:pointcut  id="allGetters" expression="execution(*  get*())"/>

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

</aop:aspect>

</aop:config>

</beans>