Spring注脚方式实现AOP demo

Spring注解方式实现AOP demo
1、新建一个java的工程，导入spring需要的jar包与开发切面需要的jar包。

dist\spring.jar
lib\jakarta-commons\commons-logging.jar
如果使用了切面编程(AOP),还需要下列jar文件
lib/aspectj/aspectjweaver.jar和aspectjrt.jar
lib/cglib/cglib-nodep-2.1_3.jar
如果使用了JSR-250中的注解,如@Resource/@PostConstruct/@PreDestroy,还需要下列jar文件
lib\j2ee\common-annotations.jar

2、Person.java

package cn.ehoo.bean;/** * @author whp * @Email whp@ehoo.cn * @Jan 4, 2011 *  */public class Person {private Long id;private String name;public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}}

2、PersonService.java 与PersonServiceBean.java

PersonService.java

package cn.ehoo.service;import cn.ehoo.bean.Person;/** *@author whp *@Email whp@ehoo.cn *@Jan 4, 2011 * */public interface PersonService {public void save(Person person);}

PersonServiceBean.java

package cn.ehoo.service.impl;import org.springframework.stereotype.Service;import cn.ehoo.bean.Person;import cn.ehoo.service.PersonService;/** * @author whp * @Email whp@ehoo.cn * @Jan 4, 2011 *  */@Service("personService")public class PersonServiceBean implements PersonService {private String user;public String getUser() {return user;}public void setUser(String user) {this.user = user;}public PersonServiceBean() {}public PersonServiceBean(String user) {super();this.user = user;}public void save(Person person) {System.out.println("执行PerServiceBean的save方法");//throw new RuntimeException("======");}}

3、MyInterceptor.java

package cn.ehoo.service.impl;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;import org.springframework.stereotype.Controller;import cn.ehoo.bean.Person;/** * @author whp * @Email whp@ehoo.cn * @Jan 4, 2011 *  */@Aspect//声明切面@Controller//把类交给spring管理public class MyInterceptor {@Pointcut("execution(* cn.ehoo.service.impl.PersonServiceBean.*(..))")// 切入点表达式private void anyMethod() {}// 声明一个切入点@Before("anyMethod()&& args(userName)")//定义前置通知 执行业务方法前执行 args(userName) 表示要执行的方式必须为一个参数并为Person类型.这样就给他再加了限制条件public void doAccessCheck(Person userName) {System.out.println(userName);//得到输入的参数System.out.println("执行前置通知"); }@AfterReturning(pointcut="anyMethod()")//定义后置通知 执行完业务方法后执行 如果例外通知执行，那么它不会执行public void doReturnCheck() {System.out.println("执行后置通知"); }@After("anyMethod()")//定义最终通知 finally里执行的通知。public void doReleaseAction() {System.out.println("执行最终通知"); }@AfterThrowing(pointcut="anyMethod()", throwing="ex")//定义例外通知    public void doExceptionAction(Exception ex) {System.out.println("执行例外通知"); } @Around("anyMethod()")//环绕通知 doBasicProfiling    pjp可以修改  用于权限public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {System.out.println("执行环绕通知"); Object retule =pjp.proceed();System.out.println("退出环绕通知"); return retule;}}

4 在src下对beans.xml进行配置

<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"><context:component-scan base-package="cn.ehoo" /><aop:aspectj-autoproxy /></beans>

4、测试类

package junit.test;import org.junit.AfterClass;import org.junit.BeforeClass;import org.junit.Test;import org.springframework.context.support.AbstractApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import cn.ehoo.bean.Person;import cn.ehoo.service.PersonService;/** * @author whp * @Email whp@ehoo.cn * @Jan 4, 2011 *  */public class AOPTest {static PersonService personService;@BeforeClasspublic static void setUpBeforeClass() throws Exception {AbstractApplicationContext cxt = new ClassPathXmlApplicationContext("beans.xml");personService = (PersonService) cxt.getBean("personService");}/** * @author whp * @Email whp@ehoo.cn * @Jan 4, 2011 *  */public static void main(String[] args) {try {setUpBeforeClass();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}@Testpublic void saveTest() {personService.save(new Person());}@AfterClasspublic static void tearDownAfterClass() throws Exception {}}

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