Spring AOP After Advice Example | Spring Tutorial

Click here to watch on Youtube:
https://www.youtube.com/watch?v=wW-NPP72o5w&list=UUhwKlOVR041tngjerWxVccw

Click the below Image to Enlarge:

Spring AOP After Advice Example | Spring Tutorial

Spring AOP After Advice Example | Spring Tutorial

Spring AOP After Advice Example | Spring Tutorial

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.ram.core</groupId>
    <artifactId>SpringDemo</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>SpringDemo</name>
    <url>http://maven.apache.org</url>

    <properties>
        <spring.version>5.0.5.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- Spring 5 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
    </dependencies>
</project>

EmployeeService.java

package com.ram.service;

public class EmployeeService
{
    public String getEmployeeName(int age)
    {
        System.out.println("Get Employee Information");
        if(age == 28)
        {
            return "Peter";
        }
        return "Dave";
    }
}

LoggingAdvice.java

package com.ram.Advice;

import java.lang.reflect.Method;
import org.springframework.aop.AfterReturningAdvice;

public class LoggingAdvice implements AfterReturningAdvice
{

    public void afterReturning(Object returnValue, Method method, Object[] args,
            Object target) throws Throwable
    {
        System.out.println("Logging advice is applied after the method "
                + method.getName() + " in the target Object "
                + target.getClass().getName());

        for (Object object : args)
        {
            System.out.println(object);
        }

        System.out.println("returnValue = " + returnValue);

    }

}

applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <bean id="employeeService" class="com.ram.service.EmployeeService"></bean>
    <bean id="loggingAdvice" class="com.ram.Advice.LoggingAdvice"></bean>

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

        <property name="target" ref="employeeService"></property>
        <property name="interceptorNames">
            <list>
                <value>loggingAdvice</value>
            </list>
        </property>
    </bean>

</beans>

App.java

package com.ram.core;

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

import com.ram.service.EmployeeService;

public class App
{
    public static void main(String[] args)
    {
        ApplicationContext context = new ClassPathXmlApplicationContext(
                "applicationContext.xml");

        System.out.println("---------------------------------------");

        EmployeeService employeeService = context.getBean("employeeServiceProxy",
                EmployeeService.class);
     
        employeeService.getEmployeeName(28);
    }

}

Output

Oct 12, 2018 8:06:21 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@6ebc05a6: startup date [Fri Oct 12 08:06:21 IST 2018]; root of context hierarchy
Oct 12, 2018 8:06:22 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
Get Employee Information
Logging advice is applied after the method getEmployeeName in the target Object com.ram.service.EmployeeService
28
returnValue = Peter

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/SpringDemo_after_advise.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/javaee/tree/master/Spring_2018/SpringDemo_after_advise

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/e16b8c6ef73a72464fa5812e24080179c4adc913/Spring_2018/SpringDemo_after_advise/?at=master

See also:

All JavaEE Videos Playlist

All JavaEE Videos

All JAVA EE Links

Spring Tutorial

Servlets Tutorial

All Design Patterns Links

JDBC Tutorial

Java Collection Framework Tutorial

JAVA Tutorial

Kids Tutorial

Cooking Tutorial