我在学习spring in action 这本书的aop的例子时，为什么我编译没有报错，但是却没有执行我切入前后的方法？
xml配置代码如下：
<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"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-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= "quest" class ="com.knight.HolyGrailQuest">
</bean>
<bean id = "knight" class = "com.knight.KnightOfTheRoundTable">
<constructor-arg value='sotomi' />
<property name='quest' ref='quest'></property>
</bean>
<bean id = "minstrel" class = "com.knight.Minstrel"></bean>
<aop:config>
<aop:aspect ref = 'minstrel' >
<aop:pointcut id='questPointCut' expression='execution(* *.embarkOnQuest(..)) and target(bean)' />
<aop:before method='singBefore' pointcut-ref='questPointCut' arg-names = 'bean' />
<aop:after-returning method='singAfter' pointcut-ref='questPointCut' arg-names = 'bean' />
</aop:aspect>
</aop:config>
</beans>
Minstrel类的方法如下：
public class Minstrel {
private static final Logger Song = Logger.getLogger(Minstrel.class);
public void singBefore(Knight knight){
Song.info("Knight is so brave!");
System.out.println("**********************before");
}
public void singAfter(Knight knight){
Song.info("Knight did quest the grail!");
}
}
测试main函数：
public class Test {
public static void main(String args[]){
BeanFactory factory = new XmlBeanFactory(new FileSystemResource("bean.xml"));
Knight knight = (Knight)factory.getBean("knight");
knight.embarkOnQuest();
}
}
但是执行后没有打印结果,我哪里设置错误了么？
