Spring AOP+AspectJ在XML配置實例

在本教程中,我們將向你展示如何轉換上章節中 Spring AOP+AspectJ 註解轉成基於XML的配置。

對於那些不喜歡註釋,使用JDK1.4,則可以基於XML,而不使用 AspectJ。

再次回顧上個 customerBo 接口中的幾個方法,以後你將學會如何在 XML文件實現 AspectJ 攔截。

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.

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" />

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實現。

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" />

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.

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" />

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.

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"  />

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.

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" />

完整的 XML 實例

查看完整的基於XML的 AspectJ 配置文件。

<aop:aspectj-autoproxy />

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" />

下載源代碼 –  http://pan.baidu.com/s/1nuwrmOh