SpringAOP案例（一）XML方式

第一步要导入spring架构包：

一、XML方式

1. TestAspect：切面类

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1. package com.spring.aop;  
2.   
3. import org.aspectj.lang.JoinPoint;  
4. import org.aspectj.lang.ProceedingJoinPoint;  
5.   
6. public class TestAspect {  
7.   
8.     public void doAfter(JoinPoint jp) {  
9.         System.out.println("log Ending method: " + jp.getTarget().getClass().getName() + "." + jp.getSignature().getName());  
10.     }  
11.   
12.     public Object doAround(ProceedingJoinPoint pjp) throws Throwable {  
13.         long time = System.currentTimeMillis();  
14.         Object retVal = pjp.proceed();  
15.         time = System.currentTimeMillis() - time;  
16.         System.out.println("process time: " + time + " ms");  
17.         return retVal;  
18.     }  
19.   
20.     public void doBefore(JoinPoint jp) {  
21.         System.out.println("log Begining method: " + jp.getTarget().getClass().getName() + "." + jp.getSignature().getName());  
22.     }  
23.   
24.     public void doThrowing(JoinPoint jp, Throwable ex) {  
25.         System.out.println("method " + jp.getTarget().getClass().getName() + "." + jp.getSignature().getName() + " throw exception");  
26.         System.out.println(ex.getMessage());  
27.     }  
28. }  

2. AServiceImpl：目标对象

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1. package com.spring.service;  
2.   
3. // 使用jdk动态代理  
4. public class AServiceImpl implements AService {  
5.   
6.     public void barA() {  
7.         System.out.println("AServiceImpl.barA()");  
8.     }  
9.   
10.     public void fooA(String _msg) {  
11.         System.out.println("AServiceImpl.fooA(msg:" + _msg + ")");  
12.     }  
13. }  

3. BServiceImpl：目标对象

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1. package com.spring.service;  
2.   
3. // 使用cglib  
4. public class BServiceImpl {  
5.   
6.     public void barB(String _msg, int _type) {  
7.         System.out.println("BServiceImpl.barB(msg:" + _msg + " type:" + _type + ")");  
8.         if (_type == 1)  
9.             throw new IllegalArgumentException("测试异常");  
10.     }  
11.   
12.     public void fooB() {  
13.         System.out.println("BServiceImpl.fooB()");  
14.     }  
15.   
16. } 

18. ApplicationContext：Spring配置文件   文件默认在src目录下

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    1. <?xml version="1.0" encoding="UTF-8"?>  
    2. <beans xmlns="http://www.springframework.org/schema/beans"  
    3.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    4.     xmlns:aop="http://www.springframework.org/schema/aop"  
    5.     xmlns:context="http://www.springframework.org/schema/context"  
    6.     xmlns:tx="http://www.springframework.org/schema/tx"  
    7.     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd  
    8.         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd  
    9.         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd  
    10.         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd">  
    11.     <aop:config>  
    12.         <aop:aspect id="TestAspect" ref="aspectBean">  
    13.             <!--配置com.spring.service包下所有类或接口的所有方法-->  
    14.             <aop:pointcut id="businessService" expression="execution(* com.spring.service.*.*(..))" />  
    15.             <aop:before pointcut-ref="businessService" method="doBefore"/>  
    16.             <aop:after pointcut-ref="businessService" method="doAfter"/>  
    17.             <aop:around pointcut-ref="businessService" method="doAround"/>  
    18.             <aop:after-throwing pointcut-ref="businessService" method="doThrowing" throwing="ex"/>  
    19.         </aop:aspect>  
    20.     </aop:config>  
    21.       
    22.     <bean id="aspectBean" class="com.spring.aop.TestAspect" />  
    23.     <bean id="aService" class="com.spring.service.AServiceImpl"></bean>  
    24.     <bean id="bService" class="com.spring.service.BServiceImpl"></bean>  
    25. </beans>  

    package com.spring.main;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.spring.service.AService;//测试类public class SpringAOPTest {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("ApplicationContext.xml");//对于实现接口的类，要得到它的接口的bean而不是接口的实现类AService aServiceImpl = (AService) ctx.getBean("aService");aServiceImpl.barA();aServiceImpl.fooA("这是springaop测试类！");// AService b=(AService) ctx.getBean("bService");// b.barA();// b.fooA("这是没有实现接口的类！");}}