spring aop 使用xml方式的简单总结

spring aop的 xml的配置方式的简单实现：

1、编写自己的切面类：配置各个通知类型

/**
 *
 */
package com.lilin.maven.service.aop;

import org.aspectj.lang.ProceedingJoinPoint;

/**
 * @author lilin aop的切面类 配置各种通知类型
 *
 */
public class InterceptorAop {
    /**
     * 前置通知
     */
    public void doBefore() {
        System.out.println("========doBefore advice==========");
    }

    /**
     * 返回后通知
     */
    public void doAferReturning() {
        System.out.println("========sdoAferReturning advice================");
    }

    /**
     * 后置通知
     */
    public void doAfter() {
        System.out.println("========doAfter advice==========");
    }

    /**
     * 抛出异常后通知
     */
    public void doAferThrowing() {
        System.out.println("=========doAferThrowing advice================");
    }

    /**
     * 环绕通知 环绕通知的第一个参数必须是ProceedingJoinPoint pjp.proceed()执行原业务方法
     *
     * @param pjp
     * @return
     * @throws Throwable
     */
    public Object doAround(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("=========doAround start===========");
        Object result = pjp.proceed();
        System.out.println("==========doAround end==========");
        return result;
    }

}

2、基于xml的aop配置如下：

<?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:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
    //业务类，需要被AOP拦截的类
    <bean id="userService" class="com.lilin.maven.service.aop.UserService"/>
　　 //切面类
    <bean id="aopAspect" class="com.lilin.maven.service.aop.InterceptorAop"/>
    //aop配置
    <aop:config>
        <aop:aspect ref="aopAspect">
            //切点的配置  匹配那些类和那些方法需要aop拦截
            <aop:pointcut expression="execution (* com.lilin.maven.service.aop.UserService.addUser(..))" id="pointCut"/>
            //各个不同的advice的配置对应的执行方法
            <aop:before  pointcut-ref="pointCut" method="doBefore"/>
            <aop:after-returning pointcut-ref="pointCut" method="doAferReturning"/>
            <aop:after-throwing  pointcut-ref="pointCut" method="doAferThrowing"/>
            <aop:after pointcut-ref="pointCut" method="doAfter"/>
            <aop:around pointcut-ref="pointCut" method="doAround"/>
        </aop:aspect>
    </aop:config>
</beans>

3、编写业务类的接口和实现：

/**
 *
 */
package com.lilin.maven.service.aop;

/**
 * @author lilin
 *
 */
public interface IUserService {
    void addUser();
}

/**
 *
 */
package com.lilin.maven.service.aop;

/**
 * @author lilin
 *
 */
public class UserService implements IUserService {

    @Override
    public void addUser() {
        System.out.println("增加用户信息");
    }

}

4、编写测试类，这里采用的是testNG的测试方案，具体测试编写如下：

/**
 *
 */
package com.lilin.maven.service.aop;

import javax.annotation.Resource;

import org.springframework.context.ApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.testng.annotations.Test;

import com.lilin.maven.service.BaseTest;

/**
 * @author lilin
 *
 */
@ContextConfiguration(locations = { "classpath:/config/spring/spring-aop.xml" })
public class AopTest extends BaseTest {

    @Resource
    private ApplicationContext cxt;

    @Test
    public void aopXmlTest() {
        IUserService userService = (IUserService) cxt.getBean("userService");
        userService.addUser();
    }

}

其中baseTest主要是用于继承AbstractTestNGSpringContextTests 开启spring的注入测试。

/**
 *
 */
package com.lilin.maven.service;

import org.springframework.test.context.testng.AbstractTestNGSpringContextTests;

/**
 * @author lilin
 *
 */
public abstract class BaseTest extends AbstractTestNGSpringContextTests {

}

5、测试结果展示如下：从结果可以看到:在调用业务的addUser方法时，aop的配置已经可以正常工作了，各个advice也能正常执行。

[TestNG] Running:
C:\Users\lilin\AppData\Local\Temp\testng-eclipse-606080275\testng-customsuite.xml

2016-1-29 2:08:14 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [config/spring/spring-aop.xml]
2016-1-29 2:08:14 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.GenericApplicationContext@10f6d3: startup date [Fri Jan 29 02:08:14 CST 2016]; root of context hierarchy
2016-1-29 2:08:15 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1742700: defining beans [userService,aopAspect,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.aop.aspectj.AspectJPointcutAdvisor#0,org.springframework.aop.aspectj.AspectJPointcutAdvisor#1,org.springframework.aop.aspectj.AspectJPointcutAdvisor#2,org.springframework.aop.aspectj.AspectJPointcutAdvisor#3,org.springframework.aop.aspectj.AspectJPointcutAdvisor#4,pointCut,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy

========doBefore advice==========
=========doAround start===========
增加用户信息
========sdoAferReturning advice================
========doAfter advice==========
==========doAround end==========
PASSED: aopXmlTest

===============================================
Default test
Tests run: 1, Failures: 0, Skips: 0
===============================================