spring中的AOP 以及各种通知

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:aop="http://www.springframework.org/schema/aop" 
 4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans
 6            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 7            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
 8     <!-- 
 9         导入目标类，导入切面
10      -->       
11      <bean id="personDao" class="cn.itcast.sh.aop.PersonDaoImpl"></bean>
12      
13      <bean id="myTransaction" class="cn.itcast.sh.aop.MyTransaction"></bean>
14      
15      <!-- 
16          aop的配置
17       -->
18       <aop:config>
19           <!-- 
20                切入点表达式
21            -->
22           <aop:pointcut expression="execution(* cn.itcast.sh.aop.PersonDaoImpl.*(..))" id="perform"/>
23           <aop:aspect ref="myTransaction">
24           
25               <aop:before method="beginTransaction" pointcut-ref="perform"/>
26               <aop:after-returning method="commit" pointcut-ref="perform"/> 
27 
28 <!--               <aop:after method="finallyMethod" pointcut-ref="perform"/> -->
29 <!--               <aop:after-throwing method="throwingMethod" pointcut-ref="perform" throwing="ex"/> -->
30 <!--               <aop:around method="aroundMethod" pointcut-ref="perform"/> -->
31           </aop:aspect>
32       </aop:config>
33 </beans>

 1 package cn.itcast.sh.aop;
 2 
 3 import org.junit.Test;
 4 import org.springframework.context.ApplicationContext;
 5 import org.springframework.context.support.ClassPathXmlApplicationContext;
 6 
 7 public class test {
 8     @Test
 9     public void testAop()
10     {
11         Person p=new Person();
12         p.setPname("new comer");
13         p.setPsex("boy");
14         
15         ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext-aop.xml");
16         PersonDao dao=(PersonDao) context.getBean("personDao");
17         dao.savePerson(p);
18     }
19     
20 }

 1 package cn.itcast.spring.aop.sh;
 2 
 3 import java.lang.reflect.Method;
 4 
 5 import org.junit.Test;
 6 
 7 import cn.itcast.spring.aop.annotation.sh.HibernateUtils;
 8 import cn.itcast.spring.aop.annotation.sh.Person;
 9 
10 public class PersonDaoImpl extends HibernateUtils{
11     public String savePerson(Person person) {
12         // TODO Auto-generated method stub
13         //int a = 1/0;
14         //sessionFactory.getCurrentSession().save(person);
15         System.out.println("aaaa");
16         return "aaaa";
17     }
18 }

 1 package cn.itcast.spring.aop.sh;
 2 
 3 import org.aspectj.lang.JoinPoint;
 4 import org.aspectj.lang.ProceedingJoinPoint;
 5 import org.hibernate.Transaction;
 6 
 7 import cn.itcast.spring.aop.annotation.sh.HibernateUtils;
 8 
 9 public class MyTransaction extends HibernateUtils{
10     private Transaction transaction;
11     /**
12      * 通过该参数可以获取目标方法的一些信息        
13      *在每个通知中都可以加入 JoinPoint joinpoint参数
14      * @param joinpoint
15      */
16     public void beginTransaction(JoinPoint joinpoint){
17         System.out.println("bbb");
18         this.transaction = sessionFactory.getCurrentSession().beginTransaction();
19     }
20     　　　　　　　　　　　　　　　　　　　　　　　　//var是目标方法的返回值,以上的savePerson函数返回值 aaaa
21     public void commit(Object var){         //保持与 application-aop.xml 中的aop:after-returning元素中 returning中的属性值一致
22         System.out.println(var);
23         this.transaction.commit();
24     }
25     
26     public void finallyMethod(){
27         System.out.println("finally method");
28     }
29     
30     /**
31      * 异常通知
32      * @param ex
33      */
34     public void throwingMethod(Throwable ex){    //保持与 application-aop.xml 中的aop:after-returning元素中 throwing中的属性值一致
35         System.out.println(ex.getMessage());
36     }
37     　　//JoinPoint是 ProceedingJoinPoint的父类 
38 public void aroundMethod(ProceedingJoinPoint joinPoint) throws Throwable{ 
39        System.out.println(joinPoint.getSignature().getName()); 
40        joinPoint.proceed();//调用目标方法 
41        System.out.println("aaaasfdasfd"); 
42     } 
43  }

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:aop="http://www.springframework.org/schema/aop" 
 4     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 5     xsi:schemaLocation="http://www.springframework.org/schema/beans
 6            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 7            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
 8     <!-- 
 9         导入目标类，导入切面
10      -->       
11      <bean id="personDao" class="cn.itcast.spring.aop.sh.PersonDaoImpl"></bean>
12      
13      <bean id="myTransaction" class="cn.itcast.spring.aop.sh.MyTransaction"></bean>
14      
15      <!-- 
16          aop的配置
17       -->
18       <aop:config>
19           <!-- 
20                切入点表达式
21            -->
22           <aop:pointcut expression="execution(* cn.itcast.spring.aop.sh.PersonDaoImpl.*(..))" id="perform"/>
23           <aop:aspect ref="myTransaction">
24           <!-- 
25         前置通知 <aop:before method="beginTransaction" pointcut-ref="perform"/>
26        后置通知 <aop:after-returning method="commit" pointcut-ref="perform" returning="var"/>
27            --><!--最终通知   异常通知   环绕通知 用于判断是否执行目标对象的-->
28               <aop:after method="finallyMethod" pointcut-ref="perform"/>
29               <aop:after-throwing method="throwingMethod" pointcut-ref="perform" throwing="ex"/>
30               <aop:around method="aroundMethod" pointcut-ref="perform"/>
31           </aop:aspect>
32       </aop:config>
33 </beans>