Spring AOP HELP needed

[Phoenix Kilimba]

Dear Sirs et Madames,
I am brand new to Spring AOP (well spring in general actually) and am trying out a small application to cement my understanding so far. However am running into exceptions which I cannot figure out and was hoping someone out there can help. I have the following source code:

Foo.java

 
public class Foo {
    private String name;
    private Integer age;

    Foo(String name, int age) {
        this.name=name;
        this.age=age;
    }
   // getters and setters...
}
   

FooService.java

 public interface FooService {

    Foo getFoo(String fooName, int age);

    void getAfter();

    void getBefore(String myName);
}
   

FooServiceImpl.java

  public class FooServiceImpl implements FooService {

      public Foo getFoo(String name, int age) {
            return new Foo(name, age);
      }
      public void getAfter() {}
      public void getBefore(String myName) {}

}
  

SimpleProfiler.java

  
public class SimpleProfiler {

    public void afterMethod() throws Throwable {

        System.out.println("After the method call");

    }

    public void beforeMethod(String myName) {

        System.out.println("My name is" + myName);

    }
}  

and Main.java:

   
public class Main {

    public static void main(final String[] args) throws Exception {
        BeanFactory ctx = new ClassPathXmlApplicationContext("spring/applicationContext.xml");
        FooService foo = (FooService) ctx.getBean("fooService");
        foo.getFoo("Mapengo", 12);
        foo.getAfter();
        foo.getBefore("Bond");
    }
} 

and finally, here is 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:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
    
    <bean id="fooService" class="aop.FooServiceImpl"/>
    <bean id="profiler" class="aop.SimpleProfiler"/>
    <aop:config>

        <aop:aspect ref="profiler">

            <aop:pointcut id="aopafterMethod"

                          expression="execution(* FooService.*(..))"/>

            <aop:after pointcut-ref="aopafterMethod" method="afterMethod"/>

            <aop:pointcut id="aopBefore"
                          expression="execution(* FooService.getBefore(String)) and args(myName)"/>
            <aop:before pointcut-ref="aopBefore"
                        method="beforeMethod"/>
        </aop:aspect>

    </aop:config>


</beans>
  

However, when I run Main.java, i get the exception/s:

   
init:
deps-module-jar:
deps-ear-jar:
deps-jar:
compile-single:
run-main:
Apr 29, 2010 2:44:21 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@a69c4d: display name [org.springframework.context.support.ClassPathXmlApplicationContext@a69c4d]; startup date [Thu Apr 29 14:44:21 EAT 2010]; root of context hierarchy
Apr 29, 2010 2:44:21 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [spring/applicationContext.xml]
Apr 29, 2010 2:44:21 PM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
INFO: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@a69c4d]: org.springframework.beans.factory.support.DefaultListableBeanFactory@f79370
Apr 29, 2010 2:44:21 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@f79370: defining beans [fooService,profiler,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.aop.aspectj.AspectJPointcutAdvisor#0,org.springframework.aop.aspectj.AspectJPointcutAdvisor#1,aopafterMethod,aopBefore]; root of factory hierarchy
Apr 29, 2010 2:44:21 PM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@f79370: defining beans [fooService,profiler,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.aop.aspectj.AspectJPointcutAdvisor#0,org.springframework.aop.aspectj.AspectJPointcutAdvisor#1,aopafterMethod,aopBefore]; root of factory hierarchy
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fooService' defined in class path resource [spring/applicationContext.xml]: BeanPostProcessor before instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.aop.aspectj.AspectJPointcutAdvisor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: FooService [Xlint:invalidAbsoluteTypeName]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:481)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:413)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:735)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:369)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:122)
        at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:66)
        at aop.Main.main(Main.java:17)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.aop.aspectj.AspectJPointcutAdvisor#0': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.aop.aspectj.AspectJPointcutAdvisor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: FooService [Xlint:invalidAbsoluteTypeName]
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:231)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:957)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:869)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:514)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:485)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
        at org.springframework.aop.framework.autoproxy.BeanFactoryAdvisorRetrievalHelper.findAdvisorBeans(BeanFactoryAdvisorRetrievalHelper.java:87)
        at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findCandidateAdvisors(AbstractAdvisorAutoProxyCreator.java:98)
        at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.shouldSkip(AspectJAwareAdvisorAutoProxyCreator.java:105)
        at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessBeforeInstantiation(AbstractAutoProxyCreator.java:244)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:828)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeforeInstantiation(AbstractAutowireCapableBeanFactory.java:799)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:475)
        ... 12 more
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.aop.aspectj.AspectJPointcutAdvisor]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: warning no match for this type name: FooService [Xlint:invalidAbsoluteTypeName]
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:98)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:225)
        ... 29 more
Caused by: java.lang.IllegalArgumentException: warning no match for this type name: FooService [Xlint:invalidAbsoluteTypeName]
        at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:315)
        at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:197)
        at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:184)
        at org.springframework.aop.aspectj.AspectJExpressionPointcut.getMethodMatcher(AspectJExpressionPointcut.java:170)
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.buildSafePointcut(AbstractAspectJAdvice.java:189)
        at org.springframework.aop.aspectj.AspectJPointcutAdvisor.<init>(AspectJPointcutAdvisor.java:51)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:83)
        ... 31 more
Java Result: 1
BUILD SUCCESSFUL (total time: 1 second)
 

I don't have the slightest clue where to start tackling this issue, could anyone out there please help?
Thanks in advance

[Nathan Pruett]

The exception says -

warning no match for this type name: FooService [Xlint:invalidAbsoluteTypeName]

In both of your pointcuts, you've declared the expression like this -

expression="execution(* FooService.*(..))"/>
expression="execution(* FooService.getBefore(String)) and args(myName)"/>

You don't show any package declaration in your classes - however, in the config it appears that some of these classes are in the 'aop' package -

<bean id="fooService" class="aop.FooServiceImpl"/>

I'm betting the FooService interface is also in the aop package - you'll need to change the values in the pointcut expressions from 'FooService' to 'aop.FooService'.

[Phoenix Kilimba]

Nathan you star, it worked like a charm!! Thanks!