通知

//配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!--目标对象-->
    <bean id="someService" class="cn.happy.ASPECTJXM.SomeSevice"></bean>
    <!--增强：通知-->
    <bean id="myAspectj" class="cn.happy.ASPECTJXM.MyAspectj"></bean>
    <!--aop-->
     <aop:config>
        <!-- <aop:pointcut id="mypoint" expression="execution(* *..ASPECTJXM.*.*(..))"/>-->
         <aop:pointcut id="One" expression="execution(* *..ASPECTJXM.*.One(..))"/>
         <aop:pointcut id="Serend" expression="execution(* *..ASPECTJXM.*.Serend(..))"/>
         <aop:pointcut id="Thire" expression="execution(* *..ASPECTJXM.*.Thire(..))"/>
         <!--ref增强对象-->
         <aop:aspect ref="myAspectj">
             <!--method增强方法-->
             <aop:before method="before" pointcut-ref="One"></aop:before>
             <aop:before method="before(org.aspectj.lang.JoinPoint)" pointcut-ref="One"></aop:before>
             <aop:after-returning method="afterReturning"  pointcut-ref="Serend"></aop:after-returning>
             <aop:after-returning method="afterReturning(java.lang.String)"  pointcut-ref="Serend" returning="result"></aop:after-returning>
             <aop:around method="around" pointcut-ref="Serend"/>
             <aop:after-throwing method="afterThrowing" pointcut-ref="Thire"/>
             <aop:after-throwing method="afterThrowing(java.lang.Exception)" pointcut-ref="Thire" throwing="ex"/>
             <aop:after method="after" pointcut-ref="Thire"></aop:after>
         </aop:aspect>
     </aop:config>
</beans>




//创建一个接口
public interface ISome {
    public void One();
    public String Serend();
    public void Thire();

}
//创建一个接口的实现类
public class SomeSevice implements ISome {
    public void One() {
        System.out.println("One==================");
    }

   public String Serend() {
       System.out.println("Send==============");
       return "返回abc";
   }

    public void Thire() {
       System.out.println("Third============");
        int i=5/0;//制造假异常
    }

}
//切面
public class MyAspectj {

    //前置通知
    public void before(){
        System.out.println("前置通知方法before()");
    }
    public void before(JoinPoint jp){
        System.out.println("前置通知方法before() jp="+jp);
    }
    //后置通知
    public void afterReturning(){
        System.out.println("后置通知方法");
    }
    public void afterReturning(String result){
        System.out.println("后置通知方法  result="+result);
    }
    //环绕通知
    public Object around(ProceedingJoinPoint pjp) throws Throwable{
        System.out.println("环绕通知方法，目标方法执行之前");
        //执行目标方法
        Object result = pjp.proceed();
        //System.out.println(result);
        System.out.println("环绕通知方法，目标方法执行之后"+pjp);
        return ((String)result).toUpperCase();
    }
    //异常通知
    public void afterThrowing(){
        System.out.println("异常通知方法");
    }
    public void afterThrowing(Exception ex){
        System.out.println("异常通知方法  ex="+ex.getMessage());
    }
    //最终通知
    public void after(){
        System.out.println("最终通知方法");
    }
}
//单测
 @org.junit.Test
    //ASPECTJXML
    public void ASPECTJXML()  {
        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextASPECTXML.xml");
        cn.happy.ASPECTJXM.ISome servic= (cn.happy.ASPECTJXM.ISome)ctx.getBean("someService");
        servic.One();
        servic.Serend();
        servic.Thire();

    }
//输出结果

前置通知方法before()
前置通知方法before() jp=execution(void cn.happy.ASPECTJXM.ISome.One())
One==================
环绕通知方法，目标方法执行之前
Send==============
环绕通知方法，目标方法执行之后execution(String cn.happy.ASPECTJXM.ISome.Serend())
后置通知方法  result=返回ABC
后置通知方法
Third============
最终通知方法
异常通知方法  ex=/ by zero
异常通知方法

java.lang.ArithmeticException: / by zero