Spring AOP实现方式一【附源码】

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();

}
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{

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.csharpcode pre { margin: 0em; }

.csharpcode .rem { color: #008000; }

.csharpcode .kwrd { color: #0000ff; }

.csharpcode .str { color: #006080; }

.csharpcode .op { color: #0000c0; }

.csharpcode .preproc { color: #cc6633; }

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.csharpcode .html { color: #800000; }

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.csharpcode .lnum { color: #606060; }

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }

2、我们写一个Person类实现Love接口

package com.spring.aop;

/**
 * 人对象
 * @author [email protected]
 *
 */
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 [email protected]
 *
 */
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 [email protected]
 *
 */
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

时间： 2024-10-12 10:11:20