Spring - AOP之AspectJ（注解）

packagecom.imooc.aspectJ.demo1;
publicclassProductDao {
publicvoidsave(){
System.out.println("保存商品...");
    }
publicStringupdate(){
System.out.println("修改商品...");
return"hello";
    }
publicvoiddelete(){
System.out.println("删除商品...");
    }
publicvoidfindOne(){
System.out.println("查询一个商品...");
//int i = 1/0;    }
publicvoidfindAll(){
System.out.println("查询所有商品...");
//        int j = 1/0;    }
}

packagecom.imooc.aspectJ.demo1;
importorg.aspectj.lang.JoinPoint;
importorg.aspectj.lang.ProceedingJoinPoint;
importorg.aspectj.lang.annotation.*;
/*** 切面类*/@AspectpublicclassMyAspectAnno {
@Before(value="myPointcut1()")
publicvoidbefore(JoinPointjoinPoint){
System.out.println("前置通知=================="+joinPoint);
    }
@AfterReturning(value="myPointcut2()",returning="result")
publicvoidafterReturing(Objectresult){
System.out.println("后置通知=================="+result);
    }
@Around(value="myPointcut3()")
publicObjectaround(ProceedingJoinPointjoinPoint) throwsThrowable {
System.out.println("环绕前通知================");
Objectobj=joinPoint.proceed(); // 执行目标方法System.out.println("环绕后通知================");
returnobj;
    }
@AfterThrowing(value="myPointcut4()",throwing="e")
publicvoidafterThrowing(Throwablee){
System.out.println("异常抛出通知=============="+e.getMessage());
    }
@After(value="myPointcut5()")
publicvoidafter(){
System.out.println("最终通知==================");
    }
@Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.save(..))")
privatevoidmyPointcut1(){}
@Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.update(..))")
privatevoidmyPointcut2(){}
@Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.delete(..))")
privatevoidmyPointcut3(){}
@Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.findOne(..))")
privatevoidmyPointcut4(){}
@Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.findAll(..))")
privatevoidmyPointcut5(){}
}

<?xmlversion="1.0"encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><!--开启AspectJ的注解开发，自动代理--><aop:aspectj-autoproxy/><!--目标类--><beanid="productDao"class="com.imooc.aspectJ.demo1.ProductDao"/><!--定义切面--><beanclass="com.imooc.aspectJ.demo1.MyAspectAnno"/></beans>

packagecom.imooc.aspectJ.demo1;
importorg.junit.Test;
importorg.junit.runner.RunWith;
importorg.springframework.test.context.ContextConfiguration;
importorg.springframework.test.context.junit4.SpringJUnit4ClassRunner;
importjavax.annotation.Resource;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
publicclassSpringDemo1 {
@Resource(name="productDao")
privateProductDaoproductDao;
@Testpublicvoiddemo1(){
productDao.save();
productDao.update();
productDao.delete();
productDao.findAll();
productDao.findOne();
    }
}

运行结果：前置通知==================execution(voidcom.imooc.aspectJ.demo1.ProductDao.save())
保存商品...
修改商品...
后置通知==================hello环绕前通知================删除商品...
环绕后通知================查询所有商品...
最终通知==================查询一个商品...