Saturday, 8 December 2018

Spring AOP AspectJ Around Advice example using XML configuration | Spring Tutorial


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Spring AOP AspectJ Around Advice example using XML configuration | Spring Tutorial

Spring AOP AspectJ Around Advice example using XML configuration | Spring Tutorial

Spring AOP AspectJ Around Advice example using XML configuration | 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>

        <!-- Spring AOP + AspectJ -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.9.1</version>
        </dependency>
       
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.1</version>
        </dependency>

    </dependencies>

</project>

EmployeeService.java

package com.ram.service;

public class EmployeeService
{
    public String addEmployee(String name)
    {
        System.out
                .println("addEmployee(String name) method is called");
        return "Employee Peter information is added successfully";
    }

    public void modifyEmployee()
    {
        System.out.println("modifyEmployee() is called");
    }

    public void deleteEmployee()
    {
        System.out.println("deleteEmployee() is called");
    }

}

LoggingAspect.java

package com.ram.Aspect;

import java.util.Arrays;

import org.aspectj.lang.ProceedingJoinPoint;

public class LoggingAspect
{
    public void logAround(ProceedingJoinPoint proceedingJoinPoint)
            throws Throwable
    {

        System.out.println("logAround() is running!");
        System.out.println("hijacked method = "
                + proceedingJoinPoint.getSignature().getName());
        System.out.println("hijacked arguments = "
                + Arrays.toString(proceedingJoinPoint.getArgs()));

        System.out.println("Around before is running!");
        proceedingJoinPoint.proceed(); // continue on the intercepted
                                        // method
        System.out.println("Around after is running!");

        System.out.println("******");
    }

}

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"
    xmlns:aop="http://www.springframework.org/schema/aop"
    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
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">


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

    <!-- Aspect -->
    <bean id="logAspect" class="com.ram.Aspect.LoggingAspect" />

    <aop:config>
        <aop:aspect id="aspectLoggging" ref="logAspect">
            <!-- @Around -->
            <aop:pointcut id="pointCutAround"
                expression="execution(* com.ram.service.EmployeeService.addEmployee(..)))" />

            <aop:around method="logAround" pointcut-ref="pointCutAround" />
        </aop:aspect>

    </aop:config>

</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("employeeService", EmployeeService.class);

        employeeService.addEmployee("Peter");

        employeeService.modifyEmployee();

        employeeService.deleteEmployee();

    }

}

Output

Nov 15, 2018 10:41:50 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@32709393: startup date [Thu Nov 15 10:41:50 IST 2018]; root of context hierarchy
Nov 15, 2018 10:41:50 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
---------------------------------------
logAround() is running!
hijacked method = addEmployee
hijacked arguments = [Peter]
Around before is running!
addEmployee(String name) method is called
Around after is running!
******
modifyEmployee() is called
deleteEmployee() is called

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

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

Bitbucket Link:
https://bitbucket.org/ramram43210/spring/src/0989e369f77ed192b0b224588ebfcdeb2019a6a2/Spring_2018/SpringDemo_aspectj_around_advise_XML_Config/?at=master

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