Aop小列子

//引入节点
<!-- https://mvnrepository.com/artifact/aspectj/aspectjweaver-->
<dependency>
    <groupId>aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.5.3</version>
</dependency>
//接口dao

public interface ISomeDAO {
    public void doSome();
}

//实现接口Dao

public class SomeDaoImpl implements ISomeDAO {
    public void doSome() {
        System.out.println("国庆节快乐");
    }
}
Service接口

public interface ISomeService {
    public void doSome();
}

//service接口实现

public class SomeServiceImpl implements  ISomeService {
    private ISomeDAO dao;

    public ISomeDAO getDao() {
        return dao;
    }

    public void setDao(ISomeDAO dao) {
        this.dao = dao;
    }

    public void doSome() {

        dao.doSome();
    }
}
xml配置

  //前置增强<bean id="beforeAdvice" class="cn.happy.day03.aop.MyBeforeAdvice">
  //后置增强<bean id="afterAvice" class="cn.happy.day03.aop.MyafterAdvice">

  </bean>
  <aop:config>
      <aop:pointcut id="mypointcut" expression="execution(* *..dao.*.*(..))"></aop:pointcut>
      <aop:advisor advice-ref="afterAvice" pointcut-ref="mypointcut"></aop:advisor>
  </aop:config>

//单测

    public void test01(){
    ApplicationContext context=new ClassPathXmlApplicationContext("applicationContextday03.xml");
    /*HappyServices service=(HappyServices)context.getBean("service");
service.work();
        System.out.println(service);*/
        ISomeService service=(ISomeService)context.getBean("someService");
      service.doSome();
}