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Spring AOP+AspectJ在XML配置实例

作者： 谭明智 Java技术QQ群：227270512 / Linux QQ群：479429477
在本教程中，我们将向你展示如何转换上章节中 Spring AOP+AspectJ 注解转成基于XML的配置。
对于那些不喜欢注释，使用JDK1.4，则可以基于XML，而不使用 AspectJ。
再次回顾上个 customerBo 接口中的几个方法，以后你将学会如何在 XML文件实现 AspectJ 拦截。 
package com.yiibai.customer.bo;

public interface CustomerBo {

	void addCustomer();
	
	String addCustomerReturnValue();
	
	void addCustomerThrowException() throws Exception;
	
	void addCustomerAround(String name);
}

1. AspectJ <aop:before> = @Before

AspectJ @Before 示例. 

package com.yiibai.aspect;

import org.aspectj.lang.JoinYiibai;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;

@Aspect
public class LoggingAspect {

	@Before("execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))")
	public void logBefore(JoinYiibai joinYiibai) {
		//...
	}

} 

在XML同等功能，使用 <aop:before>. 

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

  <aop:aspect id="aspectLoggging" ref="logAspect" >

     <!-- @Before -->
     <aop:pointcut id="pointCutBefore"
	expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))" />

     <aop:before method="logBefore" pointcut-ref="pointCutBefore" />
			
  </aop:aspect>

</aop:config>

2. AspectJ <aop:after> = @After

AspectJ @After 示例. 

package com.yiibai.aspect;

import org.aspectj.lang.JoinYiibai;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.After;

@Aspect
public class LoggingAspect {

	@After("execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))")
	public void logAfter(JoinYiibai joinYiibai) {
		//...
	}

} 

在XML同等功能，使用 <aop:after>实现。 

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

  <aop:aspect id="aspectLoggging" ref="logAspect" >

     <!-- @After -->
     <aop:pointcut id="pointCutAfter"
	expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))" />

     <aop:after method="logAfter" pointcut-ref="pointCutAfter" />
			
  </aop:aspect>

</aop:config>

3. AspectJ <aop:after-returning> = @AfterReturning

AspectJ @AfterReturning 示例. 

package com.yiibai.aspect;

import org.aspectj.lang.JoinYiibai;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.AfterReturning;

@Aspect
public class LoggingAspect {

  @AfterReturning(
   pointcut = "execution(* com.yiibai.customer.bo.CustomerBo.addCustomerReturnValue(..))",
   returning= "result")
   public void logAfterReturning(JoinYiibai joinYiibai, Object result) {
	//...
   }

}

在XML同等功能 - 使用 <aop:after-returning>. 

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

  <aop:aspect id="aspectLoggging" ref="logAspect" >

    <!-- @AfterReturning -->
    <aop:pointcut id="pointCutAfterReturning"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerReturnValue(..))" />

    <aop:after-returning method="logAfterReturning" returning="result" 
      pointcut-ref="pointCutAfterReturning" />
			
  </aop:aspect>

</aop:config>

4. AspectJ <aop:after-throwing> = @AfterReturning

AspectJ @AfterReturning 示例. 

package com.yiibai.aspect;

import org.aspectj.lang.JoinYiibai;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.AfterThrowing;

@Aspect
public class LoggingAspect {

  @AfterThrowing(
   pointcut = "execution(* com.yiibai.customer.bo.CustomerBo.addCustomerThrowException(..))",
   throwing= "error")
  public void logAfterThrowing(JoinYiibai joinYiibai, Throwable error) {
	//...
  }
}

在XML同等功能 - 使用 <aop:after-throwing>. 

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

  <aop:aspect id="aspectLoggging" ref="logAspect" >

    <!-- @AfterThrowing -->
    <aop:pointcut id="pointCutAfterThrowing"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerThrowException(..))" />
			
    <aop:after-throwing method="logAfterThrowing" throwing="error" 
      pointcut-ref="pointCutAfterThrowing"  />
			
  </aop:aspect>

</aop:config>

5. AspectJ <aop:after-around> = @Around

AspectJ @Around 示例. 

package com.yiibai.aspect;

import org.aspectj.lang.ProceedingJoinYiibai;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Around;

@Aspect
public class LoggingAspect {

	@Around("execution(* com.yiibai.customer.bo.CustomerBo.addCustomerAround(..))")
	public void logAround(ProceedingJoinYiibai joinYiibai) throws Throwable {
		//...
	}
	
}

在XML同等功能 - 使用 <aop:after-around>. 

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

   <aop:aspect id="aspectLoggging" ref="logAspect" >

    <!-- @Around -->
   <aop:pointcut id="pointCutAround"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerAround(..))" />
			
   <aop:around method="logAround" pointcut-ref="pointCutAround"  />
			
  </aop:aspect>

</aop:config>

完整的 XML 实例

查看完整的基于XML的 AspectJ 配置文件。 
<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-3.0.xsd 
	http://www.springframework.org/schema/aop 
	http://www.springframework.org/schema/aop/spring-aop-3.0.xsd ">

<aop:aspectj-autoproxy />

<bean id="customerBo" class="com.yiibai.customer.bo.impl.CustomerBoImpl" />

<!-- Aspect -->
<bean id="logAspect" class="com.yiibai.aspect.LoggingAspect" />

<aop:config>

  <aop:aspect id="aspectLoggging" ref="logAspect">

    <!-- @Before -->
    <aop:pointcut id="pointCutBefore"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))" />

    <aop:before method="logBefore" pointcut-ref="pointCutBefore" />

    <!-- @After -->
    <aop:pointcut id="pointCutAfter"
       expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomer(..))" />

    <aop:after method="logAfter" pointcut-ref="pointCutAfter" />

    <!-- @AfterReturning -->
    <aop:pointcut id="pointCutAfterReturning"
       expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerReturnValue(..))" />

    <aop:after-returning method="logAfterReturning"
      returning="result" pointcut-ref="pointCutAfterReturning" />

    <!-- @AfterThrowing -->
    <aop:pointcut id="pointCutAfterThrowing"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerThrowException(..))" />

    <aop:after-throwing method="logAfterThrowing"
      throwing="error" pointcut-ref="pointCutAfterThrowing" />

    <!-- @Around -->
    <aop:pointcut id="pointCutAround"
      expression="execution(* com.yiibai.customer.bo.CustomerBo.addCustomerAround(..))" />

    <aop:around method="logAround" pointcut-ref="pointCutAround" />

  </aop:aspect>

</aop:config>

</beans>
下载源代码 – http://pan.baidu.com/s/1nuwrmOh

  

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