SPRING IN ACTION 第4版笔记-第四章ASPECT-ORIENTED SPRING-006-定义切面使用xml

一、

you can also define pointcuts that can be used across multiple aspects by placing the <aop:pointcut> elements within the scope of the <aop:config> element.

1.其他类和上个例子一样，观众类比使用@AspectJ方式的少了@AspectJ标签及pointcut，before、after等定义

 package com.springinaction.springidol;

 public class Audience {
   public void takeSeats() { //<co id="co_takeSeats"/>
     System.out.println("The audience is taking their seats.");
   }

   public void turnOffCellPhones() { //<co id="co_turnOffCellPhones"/>
     System.out.println("The audience is turning off their cellphones");
   }

   public void applaud() { //<co id="co_applaud"/>
     System.out.println("CLAP CLAP CLAP CLAP CLAP");
   }

   public void demandRefund() { //<co id="co_demandRefund"/>
     System.out.println("Boo! We want our money back!");
   }
 }

2.xml(由于直接在xml定义切面，所以不用写<AOP:ASPECTJ-AUTOPROXY>)

(1)

 <?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.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop.xsd">

   <bean id="eddie"
       class="com.springinaction.springidol.Instrumentalist">
     <property name="instrument">
       <bean class="com.springinaction.springidol.Guitar" />
     </property>
   </bean>

   <!--<start id="audience_bean" />-->
   <bean id="audience"
       class="com.springinaction.springidol.Audience" />
   <!--<end id="audience_bean" />-->

   <!--<start id="audience_aspect" />-->
 <aop:config>
   <aop:aspect ref="audience"><!--<co id="co_refAudienceBean"/>-->

     <aop:before pointcut=
          "execution(* com.springinaction.springidol.Performer.perform(..))"
       method="takeSeats" /> <!--<co id="co_beforePointcut"/>-->

     <aop:before pointcut=
          "execution(* com.springinaction.springidol.Performer.perform(..))"
       method="turnOffCellPhones" /> <!--<co id="co_beforePointcut2"/>-->

     <aop:after-returning pointcut=
          "execution(* com.springinaction.springidol.Performer.perform(..))"
       method="applaud" /> <!--<co id="co_afterPointcut"/>-->

     <aop:after-throwing pointcut=
          "execution(* com.springinaction.springidol.Performer.perform(..))"
       method="demandRefund" /> <!--<co id="co_afterThrowingPointcut"/>-->

  </aop:aspect>
 </aop:config>
   <!--<end id="audience_aspect" />-->

 </beans>

织入的图解

(2)或

 <?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.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop.xsd">

   <bean id="eddie"
       class="com.springinaction.springidol.Instrumentalist">
     <property name="instrument">
       <bean class="com.springinaction.springidol.Guitar" />
     </property>
   </bean>

   <!--<start id="audience_bean" />-->
   <bean id="audience"
       class="com.springinaction.springidol.Audience" />
   <!--<end id="audience_bean" />-->

 <!--<start id="audience_aspect" />-->
 <aop:config>
   <aop:aspect ref="audience">
     <aop:pointcut id="performance" expression=
         "execution(* com.springinaction.springidol.Performer.perform(..))"
         /> <!--<co id="co_defPointcut"/>-->

     <aop:before
         pointcut-ref="performance"
         method="takeSeats" /> <!--<co id="co_refPointcut"/>-->
     <aop:before
         pointcut-ref="performance"
         method="turnOffCellPhones" /> <!--<co id="co_refPointcut"/>-->
     <aop:after-returning
         pointcut-ref="performance"
         method="applaud" /> <!--<co id="co_refPointcut"/>-->
     <aop:after-throwing
         pointcut-ref="performance"
         method="demandRefund" /> <!--<co id="co_refPointcut"/>-->
   </aop:aspect>
 </aop:config>
 <!--<end id="audience_aspect" />-->

 <!--<start id="audience_around_advice" />-->
 <aop:config>
   <aop:aspect ref="audience">
     <aop:pointcut id="performance2" expression=
         "execution(* com.springinaction.springidol.Performer.perform(..))"
         />

     <aop:around
         pointcut-ref="performance2"
         method="watchPerformance()" /> <!--<co id="co_around"/>-->
   </aop:aspect>
 </aop:config>
 <!--<end id="audience_around_advice" />-->
 </beans>