用代码学习Spring：IoC、AOP(下)

用代码学习Spring：IoC、AOP(上)

7 建立配置文件组织上面的类之间的关系，AOP有切入点和增强这两个重要的概念，把两个概念结合到一起，就是一个在某个方法执行的时候附加执行，切入点表示 在哪里附加，增强表示附加什么，配置文件中的myPointcut表示切入点，myInterceptor表示增强的内容，myAdvisor表示增强 器，
即两者的结合，在bo这个bean中，我们把这个增强器附加到了bo这个bean上。

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="businessObjectImpl" class="BusinessObjectImpl">
<property name="words">
<value>正在执行业务方法</value>
</property>
</bean>
<bean id="myInterceptor" class="MyInterceptor">
<property name="before">
<value>执行业务方法前</value>
</property>
<property name="after">
<value>执行业务方法后</value>
</property>
</bean>
<bean id="myPointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut">
<property name="patterns">
<list>
<value>BusinessObject.doSomething</value>
</list>
</property>
</bean>
<bean id="myAdvisor" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="pointcut" ref="myPointcut"/>
<property name="advice" ref="myInterceptor"/>
</bean>
<bean id="bo" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target">
<ref local="businessObjectImpl"/>
</property>
<property name="proxyInterfaces">
<value>BusinessObject</value>
</property>
<property name="interceptorNames">
<list>
<value>myInterceptor</value>
<value>myAdvisor</value>
</list>
</property>
</bean>
</beans><?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="businessObjectImpl" class="BusinessObjectImpl">
<property name="words">
<value>正在执行业务方法</value>
</property>
</bean>
<bean id="myInterceptor" class="MyInterceptor">
<property name="before">
<value>执行业务方法前</value>
</property>
<property name="after">
<value>执行业务方法后</value>
</property>
</bean>
<bean id="myPointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut">
<property name="patterns">
<list>
<value>BusinessObject.doSomething</value>
</list>
</property>
</bean>
<bean id="myAdvisor" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="pointcut" ref="myPointcut"/>
<property name="advice" ref="myInterceptor"/>
</bean>
<bean id="bo" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="target">
<ref local="businessObjectImpl"/>
</property>
<property name="proxyInterfaces">
<value>BusinessObject</value>
</property>
<property name="interceptorNames">
<list>
<value>myInterceptor</value>
<value>myAdvisor</value>
</list>
</property>
</bean>
</beans>

8 运行Main类，观察控制台输出结果，重新审查代码，反思为什么会出现这种结果。

用代码学习Spring：IoC、AOP(上)