AOP-schema-based实现异常通知

applicationContext.xml

• 切点标签、切点对象
• 通知标签、通知对象
• aspectJ方式是自己定义方法，通知标签只指明了通知类中的方法名，然后还要在aspect标签上写通知类的类名
• schema-based是固定的方法，异常通知类中的方法名必须为afterThrowing，所以通知标签中指明通知类即可

<?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.xsd">
        <bean id="mythrow" class="cn.wit.advice.MyThrow"></bean>
        <aop:config>
        	<aop:pointcut expression="execution(* cn.wit.test.Demo.Demo1())" id="mypoint"/>
        	<aop:advisor advice-ref="mythrow" pointcut-ref="mypoint"/>
        </aop:config>
        
        <bean id="demo" class="cn.wit.test.Demo"></bean>
        
        
        
</beans>

异常通知类

方法名必须为afterThrowing

public class MyThrow implements ThrowsAdvice{
    
    
	public void afterThrowing(Exception ex) throws Throwable{
    
    
		System.out.println("异常通知");
	}
	
}

Demo类

public class Demo {
    
    
	public void Demo1(){
    
    
		int i=5/0;
		System.out.println("demo1");
	}
	public void Demo2(){
    
    
		System.out.println("demo2");
	}
	public void Demo3(){
    
    
		System.out.println("demo3");
	}
	
}

测试

public class Test {
    
    
	public static void main(String[] args) {
    
    
		ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");
		Demo demo = ac.getBean("demo",Demo.class);
		try {
    
    
			demo.Demo1();
		} catch (Exception e) {
    
    
		} 
	}
}