Spring AOP After and Around Advice Type

Advice:

Action taken by an aspect at a particular join point. Different types of advice include “around,” “before” and “after” advice. Advice types are discussed below. Many AOP frameworks, including Spring, model an advice as an interceptor, maintaining a chain of interceptors “around” the join point.

We’ll learn about the After Advice types: After (finally), AfterReturning and AfterThrowing.

package com.dineshonjava.Spring.Aop;

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

import com.dineshonjava.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().setNameAndReturning("Dummy Circle return");
    }
}

package com.dineshonjava.Spring.Aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;

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

@Aspect
public class LoggingAspect {
   
    public void loggingAdvice(JoinPoint joinpoint)
    {
        System.out.println("Run Advice..... get method Executed");
        System.out.println(joinpoint.toString());
        Circle c=(Circle)joinpoint.getTarget();
        System.out.println(c.getName());
    }
   
    @AfterReturning(pointcut="args(name)",returning="returnString")
    public void allStringMethodArguments(String name, String returnString){
    System.out.println("A setter method has been executed............"+name);
    }
   
    @AfterThrowing(pointcut="args(name)",throwing="ex")
    public void exceptionAdvice(String name, Exception ex){
    System.out.println("Exception is thrown ............"+ex);
    }
   
    @After("args(String)")
    public void afterAdvice(){
    System.out.println("After Advice is executed...........");
    }
}

package com.dineshonjava.Spring.Aop;

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.dineshonjava.Spring.Aop;

public class Triangle {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

package com.dineshonjava.Spring.Aop;

import com.dineshonjava.Spring.Aop.model.Circle;
import com.dineshonjava.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;
    }
    public Circle getCircle() {
        return circle;
    }
    public void setCircle(Circle circle) {
        this.circle = circle;
    }
}

<beans xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" 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 class="com.dineshonjava.Spring.Aop.model.Triangle" name="triangle">
    <property name="name" value="triangle name">
    </property></bean>
    <bean class="com.dineshonjava.Spring.Aop.model.Circle" name="circle">
<!--     <property name="name" value="circle name"/>  -->
    </bean>
    <bean class="com.dineshonjava.Spring.Aop.service.ShapeService" name="shapeService">
    <property name="triangle" ref="triangle">
    <property name="circle" ref="circle">
    </property></property></bean>
    <bean class="com.dineshonjava.Spring.Aop.Aspect.LoggingAspect" name="loggingAdvice">
</bean></aop:aspectj-autoproxy></beans>

Around Advice Type

package com.dineshonjava.Spring.Aop;

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

import com.dineshonjava.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.dineshonjava.Spring.Aop;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

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

@Aspect
public class LoggingAspect {
   
    public void loggingAdvice(JoinPoint joinpoint)
    {
        System.out.println("Run Advice..... get method Executed");
        System.out.println(joinpoint.toString());
        Circle c=(Circle)joinpoint.getTarget();
        System.out.println(c.getName());
    }
   
    @AfterReturning(pointcut="args(name)",returning="returnString")
    public void allStringMethodArguments(String name, String returnString){
    System.out.println("A setter method has been executed............"+name);
    }
   
    @AfterThrowing(pointcut="args(name)",throwing="ex")
    public void exceptionAdvice(String name, Exception ex){
    System.out.println("Exception is thrown ............"+ex);
    }
   
    @After("args(String)")
    public void afterAdvice(){
    System.out.println("After Advice is executed...........");
    }

    @Pointcut("execution(*  get*())")
    public void allGetters(){}
   
   
    @Around("allGetters()")
    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.dineshonjava.Spring.Aop;

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.dineshonjava.Spring.Aop;

public class Triangle {

    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

<beans xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" 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 class="com.dineshonjava.Spring.Aop.model.Triangle" name="triangle">
    <property name="name" value="triangle name">
    </property></bean>
    <bean class="com.dineshonjava.Spring.Aop.model.Circle" name="circle">
<!--     <property name="name" value="circle name"/>  -->
    </bean>
    <bean class="com.dineshonjava.Spring.Aop.service.ShapeService" name="shapeService">
    <property name="triangle" ref="triangle">
    <property name="circle" ref="circle">
    </property></property></bean>
    <bean class="com.dineshonjava.Spring.Aop.Aspect.LoggingAspect" name="loggingAdvice">
</bean></aop:aspectj-autoproxy></beans>