想问2个关于spring的aop的问题

Question

调整以下xml的格式：
<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE beans PUBLIC  "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"> <beans> 
  <!--CONFIG--> 
  <bean id="bean" class="org.springframework.aop.framework.ProxyFactoryBean"> 
    <property name="proxyInterfaces"> 
      <value>com.company.springaop.test.Bean</value> 
    </property> 
    <property name="target"> 
      <ref local="beanTarget"/> 
    </property> 
    <property name="interceptorNames"> 
      <list> 
        <value>beforeAdvisor</value> 
        <value>afterAdvisor</value> 
        <value>nullPointerAdvisor</value>
      </list> 
    </property> 
  </bean>   <!--CLASS--> 
  <bean id="beanTarget" class="com.company.springaop.test.BeanImpl"/>   <!--ADVISOR--> 
  <!--Note: An advisor assembles pointcut and advice--> 
  <bean id="beforeAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> 
    <property name="advice"> 
      <ref local="theBeforeAdvice"/> 
    </property> 
    <property name="patterns">       <value>*.Method*</value>    </property> 
  </bean>   <!--ADVICE--> 
  <bean id="theBeforeAdvice" class="com.company.springaop.test.TestBeforeAdvice"/> 
  
  
  <bean id="afterAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> 
    <property name="advice"> 
      <ref local="theAfterAdvice"/> 
    </property> 
    <property name="pattern"> 
      <value>*.Method*</value> 
    </property> 
  </bean>
  
  <bean id="theAfterAdvice" class="com.company.springaop.test.TestAfterAdvice"/> 
  
  <bean id="nullPointerAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor"> 
    <property name="advice"> 
      <ref local="theNullPointerAdvice"/> 
    </property> 
    <property name="pattern"> 
      <value>*.Method*</value> 
    </property> 
  </bean>
  
  <bean id="theNullPointerAdvice" class="com.company.springaop.test.TestThrowAdvice"/> 
  <test/>
  
</beans>