Notification types defined by the ASPECTJ framework in spring

Target Object interface
1publicinterface  iuserservice {2public     void  Add (); 3      Public void update (); 4      Public void del (); 5      Public void search (); 6 }

1. Create a target object

1  Public classUserserviceimplImplementsIuserservice {2 @Override3      Public voidAdd () {4System.out.println ("Add ...."));5     }6 @Override7      Public voidUpdate () {8SYSTEM.OUT.PRINTLN ("Update ...."));9     }Ten @Override One      Public voiddel () { ASystem.out.println ("Del ..."); -     } - @Override the      Public voidsearch () { -System.out.println ("Search ....")); -     } -}

2. Create notifications (enhanced advice)

1 //Adcice Enhanced Class2  Public classUserservicehelper {3     //front-facing notifications4      Public voidbefore (Joinpoint JP) {5SYSTEM.OUT.PRINTLN ("Intercept target class" +jp.getsignature (). Getdeclaringtypename ());6SYSTEM.OUT.PRINTLN ("Intercept target method name" +jp.getsignature (). GetName ());7System.out.println ("Pre-notification");8         9     }Ten      Public voidafterreturning (Joinpoint jp,object val) { OneSYSTEM.OUT.PRINTLN ("Target return value" +val); ASYSTEM.OUT.PRINTLN ("Post notification"); -     } -      PublicObject Around (proceedingjoinpoint PJP)throwsthrowable{ theSYSTEM.OUT.PRINTLN ("Notification before wrapping"); -Object value =pjp.proceed (); -SYSTEM.OUT.PRINTLN ("Surround Notification"); -         returnvalue; +     } -      Public voidafterthrowing (Joinpoint jp,throwable ex) { +     //output If there is an exception ASYSTEM.OUT.PRINTLN ("Exception throw notification" +ex); at     } -      Public voidAfter (Joinpoint JP) { -SYSTEM.OUT.PRINTLN ("Intercept target method name" +jp.getsignature (). GetName ()); -System.out.println ("Final Notice"); -     } -}

3.1 Applicationcontext.xml configuration in spring:

1<?xml version= "1.0" encoding= "UTF-8"?>2<beans xmlns= "Http://www.springframework.org/schema/beans"3Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance" xmlns:context= "Http://www.springframework.org/schema/context"4xsi:schemalocation="5http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd6http//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd">7<ImportResource= "./aop4.xml"/>8</beans>

3.2 XMP configuration in spring Apo1.xml

1<?xml version= "1.0" encoding= "UTF-8"?>2<beans xmlns= "Http://www.springframework.org/schema/beans"3Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"4xmlns:context= "Http://www.springframework.org/schema/context"5xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"6xsi:schemalocation="7http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd8http//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd9http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop.xsd">Ten<!--target Object-- One<bean id= "UserService"class= "Cn.aspectjs.UserServiceImpl"/> A<!--advice Notifications- -<bean id= "Userserviceadvice"class= "Cn.aspectjs.UserServiceHelper"/> -<!--config is used to declare that the content means that the ASPECTJ framework implements Aop,aspect to configure facets, regardless of the interface. the<aop:config proxy-target-class= "true" > -<aop:aspect ref= "Userserviceadvice" > -<aop:pointcut expression= "Execution (* *.add (..))" id= "Mypointcut"/> -<!--method is enhanced class-- +<aop:before method= ""/> -<aop:before method= "Before" pointcut-ref= "Mypointcut"/> +<aop:after-returning method= "afterreturning" pointcut-ref= "Mypointcut" returning= "Val"/> A<aop:around method= "Around" pointcut-ref= "Mypointcut"/> at<aop:after-throwing method= "afterthrowing" pointcut-ref= "Mypointcut" throwing= "ex"/> -<aop:after method= "after" pointcut-ref= "Mypointcut"/> -</aop:aspect> -</aop:config> -</beans>

4. Test class

//spring Integrated JUnit Testing
@RunWith (Springjunit4classrunner.class)
parameter defines the spring configuration file to be loaded2@ContextConfiguration (locations= "Classpath:applicationContext.xml")3  Public classaspectjtest{4 @Autowired5     PrivateIuserservice UserService;6 @Test7      Public voidtest1 () {8         //The notification that corresponds to the aspectj definition in aop1.xml.9 Userservice.add ();Ten     } One}

Notification types defined by the ASPECTJ framework in spring