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
