Autoproxying @AspectJ aspects

[Vivek Alampally]

Hello everybody,
I am trying to execute the program given in section 4.3.2 in Spring in action 2nd edition. So I defined following files.

Audience.java
---------------------

import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;


@Aspect
public class Audience {
public Audience() {
}

@Pointcut("execution(* *.perform(..))")
public void performance() {}

@Before("performance()")
public void takeSeats() {
System.out.println("The audience is taking their seats.");
}

@Before("performance()")
public void turnOffCellPhones() {
System.out.println("The audience is turning off their cellphones");
}

@AfterReturning("performance()")
public void applaud() {
System.out.println("CLAP CLAP CLAP CLAP CLAP");
}

@AfterThrowing("perfomance()")
public void demandRefund() {
System.out.println("Boo! We want our money back!");
}
}

applicationContext.xml
------------------------------------

<?xml version="1.0" encoding="UTF-8"?>
<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-2.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

<bean id="vivek" class="Instrumentalist">
<property name="song" value="Twinkel....."></property>
<property name="instrument" ref="sax"></property>
</bean>
<bean id="sax" class="Saxophone"></bean>
<bean id="simpleAspect" class="Audience"></bean>
<aop:aspectj-autoproxy/>

</beans>

TestMain.java
-----------------------

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

public class TestMain {


public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
Performer i=(Performer)ctx.getBean("vivek");
i.perform();

}

}

Instrument.java
-------------------------

public interface Instrument {
public void play();
}

Instrumentalist.java
--------------------------------

public class Instrumentalist implements Performer {
public Instrumentalist() {}

public void perform() throws PerformanceException {
System.out.print("Playing " + song + " : ");
instrument.play();
}

private String song;
public void setSong(String song) {
this.song = song;
}

private Instrument instrument;
public void setInstrument(Instrument instrument) {
this.instrument = instrument;
}
}

PerformanceException.java
--------------------------------------

public class PerformanceException extends RuntimeException {
public PerformanceException() {}

public PerformanceException(String message) {
super(message);
}
}

Performer.java
-----------------

public interface Performer {
public void perform() throws PerformanceException;
}

Saxophone.java
--------------------

public class Saxophone implements Instrument {
public Saxophone() {}

public void play() {
System.out.println("TOOT TOOT TOOT");
}
}

I am getting the following exception

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'vivek' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'sax' while setting bean property 'instrument'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sax' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 can't find referenced pointcut perfomance
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sax' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 can't find referenced pointcut perfomance
Caused by: java.lang.IllegalArgumentException: error at ::0 can't find referenced pointcut perfomance
at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:315)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:189)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:176)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:157)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:189)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:244)
at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:278)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:83)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:66)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:296)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:313)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1181)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:427)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:267)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:110)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1100)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:862)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:423)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:249)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:155)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:246)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:291)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:122)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:66)
at TestMain.main(TestMain.java:9)

Can any body tell where I am doing wrong!!! I have posted this in another forum also(http://www.manning-sandbox.com/thread.jspa?threadID=38827&tstart=0)

Thanks
Vivek

[Christophe Verré]

@AfterThrowing("perfomance()") -> @AfterThrowing("performance()")

[Vivek Alampally]

Thank you so much. I did the above mentioned change. Now it works.

[Christophe Verré]

Don't forget to write that at Manning's forum !

[Syed Iqbal]

I had a similar problem. Thank you.