Spring AOP XML Configuration Project

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This is CustomerBo.java file having the source code to execute business logic.

package com.cv.spring.aop.xml; /**  * @author Chandra Vardhan  */ public interface CustomerBo {   void addCustomer();   String addCustomerReturnValue();   void addCustomerAround(String name); }

This is CustomerBoImpl.java file having the source code to execute business logic.

package com.cv.spring.aop.xml; import org.apache.log4j.Logger; /**  * @author Chandra Vardhan  */ public class CustomerBoImpl implements CustomerBo {      private final static Logger LOGGER = Logger.getLogger(CustomerBoImpl.class);   public void addCustomer(){     LOGGER.info("addCustomer() is running ");   }      public String addCustomerReturnValue(){     LOGGER.info("addCustomerReturnValue() is running ");     return "abc";   }      public void addCustomerThrowException() throws Exception {     LOGGER.info("addCustomerThrowException() is running ");     throw new Exception("Generic Error");   }      public void addCustomerAround(String name){     LOGGER.info("addCustomerAround() is running, args : " + name);   } }

This is LoggingAspect.java file having the source code to execute business logic.

package com.cv.spring.aop.xml; import java.util.Arrays; import org.apache.log4j.Logger; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Aspect; /**  * @author Chandra Vardhan  */ @Aspect public class LoggingAspect {      private final static Logger LOGGER = Logger.getLogger(LoggingAspect.class);      public void logBefore(JoinPoint joinPoint) {     LOGGER.info("*********************************************");     System.out         .println("logBefore() is called before actual method execute...");     LOGGER.info("hijacked : " + joinPoint.getSignature().getName());     LOGGER.info("**********************************************");   }      public void logAfter(JoinPoint joinPoint) {     LOGGER.info("logAfter() is running!");     LOGGER.info("hijacked : " + joinPoint.getSignature().getName());     LOGGER.info("******");   }      public void logAfterReturning(JoinPoint joinPoint, Object result) {     LOGGER.info("logAfterReturning() is running!");     LOGGER.info("hijacked : " + joinPoint.getSignature().getName());     LOGGER.info("Method returned value is : " + result);     LOGGER.info("******");   }      public void logAround(ProceedingJoinPoint joinPoint) throws Throwable {     LOGGER.info("logAround() is running!");     LOGGER.info("hijacked method : "         + joinPoint.getSignature().getName());     LOGGER.info("hijacked arguments : "         + Arrays.toString(joinPoint.getArgs()));     LOGGER.info("Around before is running!");     joinPoint.proceed();     LOGGER.info("Around after is running!");     LOGGER.info("******");   }      public void logAfterThrowing(JoinPoint joinPoint, Throwable error) {     LOGGER.info("logAfterThrowing() is running!");     LOGGER.info("hijacked : " + joinPoint.getSignature().getName());     LOGGER.info("Exception : " + error);     LOGGER.info("******");   } }

This is MainProgram.java file having the source code to execute business logic.

package com.cv.spring.aop.xml; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; /**  * @author Chandra Vardhan  */ public class MainProgram {      public static void main(String[] args) throws Exception {     ApplicationContext appContext = new ClassPathXmlApplicationContext(         "spring-config.xml");     CustomerBo customerBoImpl = (CustomerBo) appContext.getBean("customerBo");          customerBoImpl.addCustomer();        } }

This is pom.xml file having the entries of dependency jars and information to build the application .

<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/xsd/maven-4.0.0.xsd">.0" encoding="UTF-8"?> <modelVersion>4.0.0</modelVersion> <groupId>com.cv.spring.annotation</groupId> <artifactId>SpringAOPXMLConfiguration</artifactId> <name>SpringAOPXMLConfiguration</name> <packaging>jar</packaging> <version>1.0</version> <properties> <java-version>1.8</java-version> <log4j-version>1.2.16</log4j-version> <org.springframework-version>4.1.6.RELEASE</org.springframework-version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${org.springframework-version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.8.6</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.6</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins> </build> </project>

This is spring-config.xml file having the spring configuration properties.

<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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd "> <aop:aspectj-autoproxy /> <bean id="customerBo" class="com.cv.spring.aop.xml.CustomerBoImpl" /> <!-- Aspect --> <bean id="logAspect" class="com.cv.spring.aop.xml.LoggingAspect" /> <aop:config> <aop:aspect id="aspectLoggging" ref="logAspect"> <aop:pointcut id="pointCutBefore" expression="execution(* com.cv.spring.aop.xml.CustomerBo.addCustomer(..))" /> <aop:before method="logBefore" pointcut-ref="pointCutBefore" /> <aop:pointcut id="pointCutAfter" expression="execution(* com.cv.spring.aop.xml.CustomerBo.addCustomer(..))" /> <aop:after method="logAfter" pointcut-ref="pointCutAfter" /> <aop:pointcut id="pointCutAfterReturning" expression="execution(* com.cv.spring.aop.xml.CustomerBo.addCustomerReturnValue(..))" /> <aop:after-returning method="logAfterReturning" returning="result" pointcut-ref="pointCutAfterReturning" /> <aop:pointcut id="pointCutAfterThrowing" expression="execution(* com.cv.spring.aop.xml.CustomerBo.addCustomerThrowException(..))" /> <aop:after-throwing method="logAfterThrowing" throwing="error" pointcut-ref="pointCutAfterThrowing" /> <aop:pointcut id="pointCutAround" expression="execution(* com.cv.spring.aop.xml.CustomerBo.addCustomerAround(..))" /> <aop:around method="logAround" pointcut-ref="pointCutAround" /> </aop:aspect> </aop:config> </beans>

This is log4j.properties file having the entries for logging the information into the console/file.

#By default enabling Console appender # Root logger option log4j.rootLogger=INFO, stdout # Redirect log messages to console log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%-5p [%c]:%L -->> %m%n # Redirect log messages to a log file #log4j.appender.file=org.apache.log4j.RollingFileAppender #log4j.appender.file.File=C:\servlet-application.log #log4j.appender.file.MaxFileSize=5MB #log4j.appender.file.MaxBackupIndex=10 #log4j.appender.file.layout=org.apache.log4j.PatternLayout #log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n