spring23:Aspectj实现异常通知@AfterThrowing

切入类:

 

package com.atChina.Test4;import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.AfterReturning; import org.aspectj.lang.annotation.AfterThrowing; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.aspectj.lang.annotation.Before;/*** @Aspect:来自aspectj框架,表示当前类是切面类* 切面类是用来给业务方法增强功能的类*/ @Aspect public class MyAspect {/*** @AfterThrowing:异常通知,目标方法抛出异常时执行* 属性:1. value,表示切入点表达式(切面功能加入的位置)* 2. throwing,自定义的变量,表示目标方法的异常对象,需要和通知方法的参数名* 位置:在方法的上面* * 特点:* 1.在目标方法抛出异常时执行* 2.不是异常处理程序，只是得到异常的消息* 3.可以作为目标方法的监控程序，检查目标方法是否正常执行*/@AfterThrowing(value="execution(* *..SomeServiceImpl.doException())", throwing="ex")public void myAfterThrowing(Throwable ex){System.out.println("出现了异常"+ex);} }

 普通bean

package com.atChina.Test4;public interface SomeService {public void doSome();public String doOther(String params);public Student getStudent();public String doAround();public void doException(); }package com.atChina.Test4;public class SomeServiceImpl implements SomeService {@Overridepublic void doSome() {System.out.println("执行了doSome业务方法...");}@Overridepublic String doOther(String params) {// TODO Auto-generated method stubSystem.out.println("执行了doSome业务方法..."+params);return params;}@Overridepublic Student getStudent() {Student st = new Student();st.setAge(22);st.setName("孙悟空");return st;}@Overridepublic String doAround() {System.out.println("执行了doAround业务方法...");return "doAround";}@Overridepublic void doException() {// TODO Auto-generated method stubint i = 5/0;System.out.println("doException...");} }package com.atChina.Test4;public class Student {private String name;private int age;public void setName(String name) {this.name = name;}public void setAge(int age) {this.age = age;}@Overridepublic String toString() {return "Student [name=" + name + ", age=" + age + "]";} }

 配置文件

<?xml version="1.0" encoding="UTF-8"?> <!-- 引用Spring的多个Schema空间的格式定义文件 --> <beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsd "><!-- 声明目标类对象 --><bean id="someService" class="com.atChina.Test4.SomeServiceImpl" /><!-- 声明切面类对象 --><bean id="myAspect" class="com.atChina.Test4.MyAspect" /><!-- 声明自动代理生成器,创建代理对象 --><aop:aspectj-autoproxy /> <!-- 寻找aspectj框架能够识别的标签 --> </beans>

测试方法:

@Testpublic void test2(){String configLocation = "com/atChina/Test4/applicationContext.xml"; // 类路径的根目录ApplicationContext ctx = new ClassPathXmlApplicationContext(configLocation);// 目标对象有接口,aspectj默认使用的是jdk动态代理SomeService proxy = (SomeService) ctx.getBean("someService");System.out.println(proxy.getClass().getName());// proxy.doSome();System.out.println("===================================");proxy.doException();}

 

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