8.Spring "AOP" annotation method

1. Introduction of the JAR package

Sprig Framework foundation Package +JUNTIL Integration Pack + Log Pack +AOP package

spring的传统AOP的开发的包

　　spring-aop-4.2.4.RELEASE.jar

　　com.springsource.org.aopalliance-1.0.0.jar

aspectJ的开发包

　　com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar

　　spring-aspects-4.2.4.RELEASE.jar

2. Introduction of configuration Files (AOP constraints, annotation constraints)

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"Xmlns:context= "Http://www.springframework.org/schema/context"XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:tx= "Http://www.springframework.org/schema/tx"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd    Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/aop/spring-aop.xsd/HTTP Www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd ">        </Beans>

3. Create an implementation class

 Public Interface UserService {        publicvoid  Save ();          Public void update ();          Public void Delete ();}

@Service (value= "UserService") Public classUserserviceimplImplementsUserService {@Override Public voidSave () {//TODO auto-generated Method StubSYSTEM.OUT.PRINTLN ("Business layer: Save Customer ..."); } @Override Public voidUpdate () {//TODO auto-generated Method StubSYSTEM.OUT.PRINTLN ("Business layer: Update Customer ..."); } @Override Public voidDelete () {//TODO auto-generated Method StubSYSTEM.OUT.PRINTLN ("Business layer: Delete Customer ..."); }}

4. Hosting the implementation class in spring annotation mode

5. Creating a Slice Class

 public  class   Myaspectann { public  void   log () {System.out.println (" Pre-notification ... "     public  void   arround (Proceedingjoinpoint joinpoint) {System.out.println ( Surround notification 1 ...)   SYSTEM.OUT.PRINTLN ( surround notification 2 ...)     public  void   after () {System.out.println (" post-Notification: "     }  

6. Hosting a slice class in spring

7. Defining the Pointcut for the Slice class method

8. Turn on automatic proxy in the configuration file and scan annotations

    <!---    <base-package = "Com.spring.demo1"  />        <!----    <AOP: Aspectj-autoproxy/>

9. Writing test Code

@RunWith (Springjunit4classrunner.class) @ContextConfiguration ("Classpath:applicationContext.xml") Public classDemo1 {@Resource (name= "UserService")    PrivateUserService UserService; @Test Public voidm01 () {System.out.println ("=======================");        Userservice.save (); System.out.println ("=======================");        Userservice.update (); System.out.println ("=======================");        Userservice.delete (); System.out.println ("======================="); }}

Effect:

8.Spring "AOP" annotation method