Spring实战06——AOP通知之xml配置

例子同上一文

1.接口

package com.qhf.aop.example03;

public interface Performance {
    public void perform();
}

2.表演实现类

package com.qhf.aop.example03;

public class PerformanceImpl implements Performance {

    @Override
    public void perform() {
        //int a = 1/0;
        System.out.println("表演过程中...");
    }
}

3.观众类

package com.qhf.aop.example03;

import org.aspectj.lang.ProceedingJoinPoint;

public class Audience {

    public void silencePhones(){
        System.out.println("关手机...");
    }

    public void takeSeats(){
        System.out.println("找座位...");
    }

    public void applause(){
        System.out.println("鼓掌...");
    }

    public void demandRefund(){
        System.out.println("要求重演...");
    }

    public void watchPerformance(ProceedingJoinPoint pj){
        try {
            silencePhones();
            takeSeats();

            pj.proceed();

            applause();
        } catch (Throwable t){
            demandRefund();
            t.printStackTrace();
        }
    }
}

4.配置类

package com.qhf.aop.example03;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration //作为配置文件之一
@ImportResource("classpath:aop/example03/aop.xml")
public class AOPConfig {

}

5.xml配置文件

<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    <aop:aspectj-autoproxy/>

    <!--<aop:config>-->
        <!--<aop:aspect ref="audience">-->
            <!--&lt;!&ndash; 定义切面&ndash;&gt;-->
            <!--<aop:pointcut id="performance" expression="execution(* com.qhf.aop.example03.Performance.perform(..))"/>-->
            <!--&lt;!&ndash; 引用切面 &ndash;&gt;-->
            <!--<aop:before pointcut-ref="performance" method="silencePhones"/>-->
            <!--<aop:before pointcut-ref="performance" method="takeSeats"/>-->
            <!--<aop:after-returning pointcut-ref="performance" method="applause"/>-->
            <!--<aop:after-throwing pointcut-ref="performance" method="demandRefund"/>-->

        <!--</aop:aspect>-->
    <!--</aop:config>-->
    
    <!-- 环绕通知 -->
    <aop:config>
        <aop:aspect ref="audience">
            
            <aop:pointcut id="performance" expression="execution(* com.qhf.aop.example03.Performance.perform(..))"/>
            <!-- 也需要定义watchPerformance 方法，使用ProceedingJoinPoint 参数的proceed() 方法 -->
            <aop:around method="watchPerformance" pointcut-ref="performance"/>
            
        </aop:aspect>
    </aop:config>

    <bean id="performanceImpl" class="com.qhf.aop.example03.PerformanceImpl"/>
    <bean id="audience" class="com.qhf.aop.example03.Audience"/>
</beans>

6.测试

ackage com.qhf.aop.example03;

import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes= AOPConfig.class)
public class Test {

    @Autowired
    private Performance performance;//即便这里名字是performance，符合这个接口的实现类是PerformanceImpl，所以bean的id是performanceImpl

    @org.junit.Test
    public void test(){
        performance.perform();
    }
}

7.结果

关手机...
找座位...
表演过程中...
鼓掌...

Spring实战06——AOP通知之xml配置

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