SpringAOP04异常抛出增强ThrowsAdvice
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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