目標對象接口
1 public interface IUserService {
2     public void add();
3     public void update();
4     public void del();
5     public void search();
6 }

1.創建目標對象

 1 public class UserServiceImpl implements IUserService {
 2     @Override
 3     public void add() {
 4         System.out.println("add....");
 
 5     }
 6     @Override
 7     public void update() {
 8         System.out.println("update....");
 9     }
10     @Override
11     public void del() {
12         System.out.println("del....");
13     }
14     @Override
15     public void search() {
16         System.out.println("search....");
17     }
 
18 }

2.創建通知(增強 advice)

 1 //adcice增強類
 2 public class UserServiceHelper {
 3     //前置通知
 4     public void before(JoinPoint jp){
 5         System.out.println("攔截目標類"+jp.getSignature().getDeclaringTypeName());
 6         System.out.println("攔截目標方法名"+jp.getSignature().getName());
 7         System.out.println("前置通知");
 
 8         
 9     }
10     public void afterreturning(JoinPoint jp,Object val){
11         System.out.println("目標返回值"+val);
12         System.out.println("後置通知");
13     }
14     public Object around(ProceedingJoinPoint pjp) throws Throwable{
15         System.out.println("環繞前通知");
16         Object value = pjp.proceed();
17         System.out.println("環繞後通知");
18         return value;
19     }
20     public void afterthrowing(JoinPoint jp,Throwable ex){
21     //有異常時才輸出
22         System.out.println("異常拋出通知"+ex);
23     }
24     public void after(JoinPoint jp){
25         System.out.println("攔截目標方法名"+jp.getSignature().getName());
26         System.out.println("最終通知");
27     }
28 }

3.1在Spring的applicationContext.xml配置:

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" xmlns:context="http://www.springframework.org/schema/context"
4     xsi:schemaLocation="
5         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
6         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
7     <import resource="./aop4.xml" />
8 </beans> 

3.2在Spring的xmp配置apo1.xml

 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:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" 
 6     xsi:schemaLocation="
 7         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
 8         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
 9         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> 
10     <!-- target 目標對象 -->
11     <bean id="userService" class="cn.aspectjs.UserServiceImpl"/>
12     <!-- advice 通知-->
13     <bean id="userServiceAdvice" class="cn.aspectjs.UserServiceHelper"/>
14     <!-- config是用來聲明,內容表示不管有沒有接口,都用aspectj框架實現aop,aspect用來配置切面 -->
15     <aop:config proxy-target-class="true">
16         <aop:aspect ref="userServiceAdvice">
17             <aop:pointcut expression="execution(* *.add(..))" id="MypointCut"/>
18             <!-- method是增強類 -->
19             <aop:before method=""/>
20              <aop:before method="before" pointcut-ref="MypointCut"/>
21             <aop:after-returning method="afterreturning" pointcut-ref="MypointCut" returning="val"/>
22             <aop:around method="around" pointcut-ref="MypointCut" />
23             <aop:after-throwing method="afterthrowing" pointcut-ref="MypointCut" throwing="ex"/>
24             <aop:after method="after" pointcut-ref="MypointCut" /> 
25         </aop:aspect>
26     </aop:config>
27 </beans> 

4.測試類

 //Spring整合JUnit測試
 @RunWith(SpringJUnit4ClassRunner.class)
//參數定義了要裝入的Spring配置文件
 2 @ContextConfiguration(locations="classpath:applicationContext.xml")
 3 public class AspectJTest{
 4     @Autowired
 5     private IUserService userService;
 6     @Test
 7     public void test1(){
 8         //對應aop1.xml中的aspectj定義的通知.
 9         userService.add();
10     }
11 }

在Spring中Aspectj框架定義的通知類型