基本代理模式 纯POJO切面
源码结构:
1、首先我们新建一个接口,love 谈恋爱接口。
package com.spring.aop; /** * 谈恋爱接口 * * @author Administrator * */ public interface Love { /* * 谈恋爱方法 */ void fallInLove(); }
2、我们写一个Person类实现Love接口
package com.spring.aop; /** * 人对象 * @author luwenbin006@163.com * */ public class Person implements Love { /* * 重写谈恋爱方法 * @see com.spring.aop.Love#fallInLove() */ public void fallInLove() { System.out.println("谈恋爱了..."); } }
3、下面我们来写aop通知类
package com.spring.aop; import java.lang.reflect.Method; import org.springframework.aop.AfterReturningAdvice; import org.springframework.aop.MethodBeforeAdvice; /** * aop通知类 * @author luwenbin006@163.com * */ public class LoveHelper implements MethodBeforeAdvice, AfterReturningAdvice { //调用方法之前执行 public void before(Method mtd, Object[] arg1, Object arg2) throws Throwable { System.out.println("谈恋爱之前必须要彼此了解!"); } //调用方法之后执行 public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable { System.out.println("我们已经谈了5年了,最终还是分手了!"); // System.out.println("我们已经谈了5年了,最终步入了结婚的殿堂!"); } }
4、配置好application.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:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> <!-- 配置person对象 --> <bean id="person" class="com.spring.aop.Person"> </bean> <!-- 配置通知方法类 --> <bean id="loveHelper" class="com.spring.aop.LoveHelper"> </bean> <!-- 配置接口方法通知 也就是符合哪个条件的方法才进行通知 --> <bean id="lovePointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"> <property name="pattern" value=".*fallInLove" /> </bean> <!-- 声明advisor 指定接口和通知类 --> <bean id="loveHelperAdvisor" class="org.springframework.aop.support.DefaultPointcutAdvisor"> <property name="advice" ref="loveHelper" /> <property name="pointcut" ref="lovePointcut" /> </bean> <!-- 配置代理工厂 --> <bean id="loveProxy" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="target" ref="person" /> <property name="interceptorNames" value="loveHelperAdvisor" /> <property name="proxyInterfaces" value="com.spring.aop.Love" /> </bean> </beans>
5、写上我们的测试类 测试下效果 嘿嘿~~~
package com.spring.aop; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.spring.aop.Love; /** * aop测试方法类 * @author luwenbin006@163.com * */ public class LoveTest { public static void main(String[] args) { //加载spring配置文件 ApplicationContext appCtx = new ClassPathXmlApplicationContext( "applicationContext.xml"); //得到loveProxy对象 Love love = (Love) appCtx.getBean("loveProxy"); //调用谈恋爱方法 love.fallInLove(); } }
6、看控制台输出结果 调用了我们定义的aop拦截方法~~~ ok了
7、源码下载地址:源码下载