JAVA EE: How to apply AroundAdvice using RegexpMethodPointcutAdvisor and DefaultAdvisorAutoProxyCreator

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How to apply AroundAdvice using RegexpMethodPointcutAdvisor and DefaultAdvisorAutoProxyCreator

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()

    {

        System.out.println("Get Employee Name");

        return "Dave";

    }

    public int getEmployeeAge()

    {

        System.out.println("Get Employee Age");

        return 28;

    }

    public String getEmployeeAddress()

    {

        System.out.println("Get Employee Address");

        return "A111, East Street";

    }

}

CustomerService.java

package com.ram.service;

public class CustomerService

{

    public String getCustomerName()

    {

        System.out.println("Get Customer Name");

        return "Peter";

    }

    public int getCustomerAge()

    {

        System.out.println("Get Customer Age");

        return 38;

    }

    public String getCustomerAddress()

    {

        System.out.println("Get Customer Address");

        return "B111, North Street";

    }

}

AroundAdvice.java

package com.ram.Advice;

import org.aopalliance.intercept.MethodInterceptor;

import org.aopalliance.intercept.MethodInvocation;

public class AroundAdvice implements MethodInterceptor

{

    public Object invoke(MethodInvocation mi) throws Throwable

    {

        Object obj;

        System.out.println("AroundAdvice applied before actual method = "

                + mi.getMethod().getName());

        obj = mi.proceed();

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

        System.out.println("AroundAdvice applied after actual method =  "

                + mi.getMethod().getName());

        return obj;

    }

}

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="customerService" class="com.ram.service.CustomerService"></bean>

    <bean id="aroundAdvice" class="com.ram.Advice.AroundAdvice"></bean>

    <bean id="employeeAdvisor"

        class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">

        <property name="patterns">

            <list>

                <value>.*Age.*</value>

            </list>

        </property>

        <property name="advice" ref="aroundAdvice" />

    </bean>

    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator" />

</beans>

App.java

package com.ram.core;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ram.service.CustomerService;

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.getEmployeeName();

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

        employeeService.getEmployeeAge();

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

        employeeService.getEmployeeAddress();

        CustomerService customerService = context

                .getBean("customerService", CustomerService.class);

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

        customerService.getCustomerName();

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

        customerService.getCustomerAge();

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

        customerService.getCustomerAddress();

    }

}

Output

Oct 30, 2018 9:29:55 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh

INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@736e9adb: startup date [Tue Oct 30 09:29:55 IST 2018]; root of context hierarchy

Oct 30, 2018 9:29:55 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

INFO: Loading XML bean definitions from class path resource [applicationContext.xml]

---------------------------------------

Get Employee Name

----------------------------------------

AroundAdvice applied before actual method = getEmployeeAge

Get Employee Age

obj = 28

AroundAdvice applied after actual method =  getEmployeeAge

----------------------------------------

Get Employee Address

----------------------------------------

Get Customer Name

----------------------------------------

AroundAdvice applied before actual method = getCustomerAge

Get Customer Age

obj = 38

AroundAdvice applied after actual method =  getCustomerAge

----------------------------------------

Get Customer Address