spring aop的使用（注解方式以及基于xml配置方式）

转载的。。原文地址

http://blog.csdn.net/xzf19901108/article/details/7835558

注解方式

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beans.xml

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 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="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"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-2.5.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            ">

           <aop:aspectj-autoproxy/>
           <bean id="myInterceptor" class="blog.service.MyInterceptor"/>
           <bean id="personService" class="blog.service.impl.PersonServiceBean"></bean>

 </beans>

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MyInterceptor.java

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 package blog.service;

 import org.aspectj.lang.ProceedingJoinPoint;
 import org.aspectj.lang.annotation.After;
 import org.aspectj.lang.annotation.AfterReturning;
 import org.aspectj.lang.annotation.AfterThrowing;
 import org.aspectj.lang.annotation.Around;
 import org.aspectj.lang.annotation.Aspect;
 import org.aspectj.lang.annotation.Before;
 import org.aspectj.lang.annotation.Pointcut;

 /**
  * 切面
  *
  */
 @Aspect
 public class MyInterceptor {
     @Pointcut("execution (* blog.service.impl.PersonServiceBean.*(..))")
     public void anyMethod() {
         //表达式解释：* blog.service.impl.PersonServiceBean.*(..):第一个*号表示返回类型；
         //blog.service.impl.PersonServiceBean.*：表示PersonServiceBean类下的所有方法
         //blog.service.impl..*.*：表示blog.service.impl包及其子包下的所有类的所有方法
         //(..):表示所有的参数类型几个数都不限
     }// 声明一个切入点

     //会拦截参数签名位 (String , int)或(String , Integer )类型的方法，
     //参数顺序与args(uname,id)一致，参数类型由(int id,String uname)决定
     @Before("anyMethod() && args(uname,id)")
     public void doAccessCheck(int id,String uname) {
         System.out.println("前置通知:" + uname + id);
     }

     @AfterReturning(pointcut="anyMethod()",returning="result")
     public void doAfterReturning(String result) {
         System.out.println("后置通知:" + result);
     }

     @After("anyMethod()")
     public void doAfter() {
         System.out.println("最终通知");
     }

     @AfterThrowing(pointcut="anyMethod()",throwing="e")
     public void doAfterThrowing(Exception e) {
         System.out.println("例外通知:" + e.getMessage());
     }

     @Around("anyMethod()")
     public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable{
         //if(){//判断用户是否有权限
         System.out.println("进入方法");
         Object result = pjp.proceed();
         System.out.println("退出方法");
         //}
         return result;
     }
 }

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PersonService.java

***************

 package blog.service;


 public interface PersonService {
     public String save(String name);
     public String update(String name,Integer userId);
     public String delete(int id,String dept);

 }

***************

PersonServiceBean.java

***************

 package blog.service.impl;

 import blog.service.PersonService;

 public class PersonServiceBean implements PersonService {
     private String username = null;

     public String getUsername() {
         return username;
     }

     public PersonServiceBean() {
     }

     public PersonServiceBean(String username) {
         this.username = username;
     }

     @Override
     public String save(String name) {
         if (name.equals("") || name == null) {
             throw new RuntimeException("出错啦");
         }
         System.out.println("in save method!" + name);

         return "in save method!" + name;
     }

     @Override
     public String update(String name, Integer userId) {
         System.out.println("in update method! name = " + name + " id = "
                 + userId + " username = " + username);
         return "in update method!name = " + name + " id = " + userId;
     }

     @Override
     public String delete(int id, String dept) {
         System.out.println("id = " + id + " dept = " +  dept);
         return "in delete method! + nameid = " + id + " dept = " +  dept;
     }

 }

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SpringAOPTest.java

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 package junitTest;


 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;

 import blog.service.PersonService;

 public class SpringAOPTest {

     @BeforeClass
     public static void setUpBeforeClass() throws Exception {
     }

     @Test
     public void AopTest(){
         ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
         PersonService service = (PersonService)ctx.getBean("personService");
         try {

             service.delete(12, "it");
             service.update("发多个地方",324);
             service.save("");

         } catch (Exception e) {
             e.printStackTrace();
         }
     }

 }

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运行结果

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基于xml配置方式

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beans.xml

************

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="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"
        xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-2.5.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            ">

           <aop:aspectj-autoproxy/>
           <bean id="myInterceptor" class="blog.service.MyInterceptor"/>
           <bean id="personService" class="blog.service.impl.PersonServiceBean"></bean>

           <aop:config>
             <aop:aspect id="aspectBean" ref="myInterceptor" >
                 <aop:pointcut  id="point"  expression="execution (!void blog.service.impl.PersonServiceBean.*(..))"/>
                 <aop:before method="doAccessCheck" pointcut-ref="point" />
                 <aop:after-returning method="doAfterReturning" pointcut-ref="point" />
                 <aop:after-throwing method="doAfterThrowing" pointcut-ref="point"/>
                 <aop:after method="doAfter" pointcut-ref="point"/>
                 <aop:around method="doBasicProfiling" pointcut-ref="point" />

             </aop:aspect>
           </aop:config>

 </beans>

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MyInterceptor.java

*******************

 package blog.service;

 import org.aspectj.lang.ProceedingJoinPoint;


 public class MyInterceptor {
     public void anyMethod() {
     }

     public void doAccessCheck() {
         System.out.println("前置通知" );
     }

     public void doAfterReturning() {
         System.out.println("后置通知");
     }

     public void doAfter() {
         System.out.println("最终通知");
     }

     public void doAfterThrowing() {
         System.out.println("例外通知");
     }

     public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable{
         //if(){//判断用户是否有权限
         System.out.println("进入方法");
         Object result = pjp.proceed();
         System.out.println("退出方法");
         //}
         return result;
     }
 }

aop表达式的使用方法

<aop:pointcut  id="point"  expression="execution (!void blog.service.impl.PersonServiceBean.*(..))"/>

!void blog.service.impl.PersonServiceBean.*(..)中!void 表示拦截所有返回类型为非void类型的方法

java.lang.String表示拦截所有返回类型为String类型的方法

* blog.service.impl.PersonServiceBean.*(java.lang.String,..)表示拦截所有第一个参数为String类型的方法