原文地址：https://mkyong.com/spring3/spring-aop-aspectj-in-xml-configuration-example

在本教程中，我们向您展示如何将Spring - AOP - AspectJ annotation示例转换为基于XML的配置。

对于那些不喜欢注释或使用JDK 1.4的用户，您可以改用基于XML的AspectJ。

再次查看上一个customerBo接口，定义了很少的方法，稍后您将了解如何通过XML文件中的AspectJ拦截它。

package com.mkyong.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.mkyong.aspect;

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

@Aspect
public class LoggingAspect {

    @Before("execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))")
    public void logBefore(JoinPoint joinPoint) {
        //...
    }

}

XML中与<aop:before>等效的功能。

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

<aop:config>

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

     <!-- @Before -->
     <aop:pointcut id="pointCutBefore"
    expression="execution(* com.mkyong.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.mkyong.aspect;

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

@Aspect
public class LoggingAspect {

    @After("execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))")
    public void logAfter(JoinPoint joinPoint) {
        //...
    }

}

XML中的等效功能，带有<aop:after>。

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

<aop:config>

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

     <!-- @After -->
     <aop:pointcut id="pointCutAfter"
    expression="execution(* com.mkyong.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.mkyong.aspect;

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

@Aspect
public class LoggingAspect {

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

}

XML中的等效功能，带有<aop：after-returning>。

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

<aop:config>

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

    <!-- @AfterReturning -->
    <aop:pointcut id="pointCutAfterReturning"
      expression="execution(* com.mkyong.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.mkyong.aspect;

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

@Aspect
public class LoggingAspect {

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

XML中的等效功能，带有<aop:after-throwing>。

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

<aop:config>

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

    <!-- @AfterThrowing -->
    <aop:pointcut id="pointCutAfterThrowing"
      expression="execution(* com.mkyong.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.mkyong.aspect;

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

@Aspect
public class LoggingAspect {

    @Around("execution(* com.mkyong.customer.bo.CustomerBo.addCustomerAround(..))")
    public void logAround(ProceedingJoinPoint joinPoint) throws Throwable {
        //...
    }
    
}

XML中的等效功能，带有<aop:after-around>。

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

<aop:config>

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

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

</aop:config>

完整的XML示例

请参阅完整的基于AspectJ XML的配置文件。

<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.mkyong.customer.bo.impl.CustomerBoImpl" />

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

<aop:config>

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

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

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

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

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

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

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

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

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

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

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

  </aop:aspect>

</aop:config>

</beans>