SpringAOP04异常抛出增强ThrowsAdvice

编程

package com.test.springadvicetype;

import org.springframework.stereotype.Component;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

* 服务员类

*/

@Component

public class Waiter {

/**

* 服务

* @param name

*/

public String serve(String name) {

System.out.println(name + ",您好,很高兴为您服务。");

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");

return name + ",您好,现在是北京时间" + format.format(new Date());

}

/**

* 开车

* @param name

*/

public void driving(String name) {

throw new RuntimeException(name + ",您好,禁止酒后驾车!");

}

}

2、异常抛出增强,实现 ThrowsAdvice 接口

package com.test.springadvicetype.throwsadvice;

import org.springframework.aop.ThrowsAdvice;

import org.springframework.stereotype.Component;

/**

* 异常抛出增强

*/

@Component

public class SpringThrowsAdvice implements ThrowsAdvice {

public void afterThrowing(Exception e) throws Throwable{

System.out.printf("异常抛出增强执行:%s%n", e);

}

}

3、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:aop="http://www.springframework.org/schema/aop"

xmlns:context="http://www.springframework.org/schema/context"

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.xsd http://www.springframework.org/schema/context

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

<!-- 开启注解扫描 -->

<context:component-scan base-package="com.test.springadvicetype"/>

</beans>

4、测试代码

package com.test.springadvicetype.throwsadvice;

import com.test.springadvicetype.Waiter;

import org.springframework.aop.framework.ProxyFactory;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**

* Spring异常抛出增强测试

*/

public class SpringThrowsAdviceDemo {

public static void main(String[] args) {

System.out.println("Spring异常抛出增强测试");

System.out.println("==========我是分割线==========");

ApplicationContext context = new ClassPathXmlApplicationContext("classpath:spring-chapter3-springaoptype.xml");

Waiter waiter = (Waiter) context.getBean("waiter");

SpringThrowsAdvice advice = (SpringThrowsAdvice) context.getBean("springThrowsAdvice");

//Spring提供的代理工厂

ProxyFactory pf = new ProxyFactory();

//设置代理目标

pf.setTarget(waiter);

pf.addAdvice(advice);

//生成代理实例

Waiter proxy = (Waiter)pf.getProxy();

proxy.driving("Michael");

}

}

5、测试结果

Spring异常抛出增强测试

==========我是分割线==========

异常抛出增强执行:java.lang.RuntimeException: Michael,您好,禁止酒后驾车!

Exception in thread "main" java.lang.RuntimeException: Michael,您好,禁止酒后驾车!

at com.test.springadvicetype.Waiter.driving(Waiter.java:30)

at com.test.springadvicetype.Waiter$$FastClassBySpringCGLIB$$57d4d7c2.invoke(<generated>)

at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)

at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)

at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:112)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)

at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)

at com.test.springadvicetype.Waiter$$EnhancerBySpringCGLIB$$e5915ab1.driving(<generated>)

at com.test.springadvicetype.throwsadvice.SpringThrowsAdviceDemo.main(SpringThrowsAdviceDemo.java:28)

 

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