Spring中的异常增强
接口:
/**
* 接口
* Created by Administrator on 2017/10/7.
*/
public interface ISomeService {
public void SomeService() throws Exception;
}
实现类:
/**
* 接口的实现类
* Created by Administrator on 2017/10/7.
*/
public class SomeService implements ISomeService {
//核心业务 异常增强
public void SomeService() throws Exception{
int result=5/0;
System.out.println("hello");
}
}
异常通知
/**
*
* Created by Administrator on 2017/10/12.
*/
public class MyExceptionAdvisor implements ThrowsAdvice {
public void afterThrowing(Exception ex){
System.out.println("错误");
}
}
xml配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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
">
<!--异常增强-->
<!--目标对象-->
<bean id="someService" class="cn.happy.exceptionadvisor.SomeService"></bean>
<!--增强 通知-->
<bean id="throwadvise" class="cn.happy.exceptionadvisor.MyExceptionAdvisor"></bean>
<!--aop-->
<bean id="proxyService" class="org.springframework.aop.framework.ProxyFactoryBean">
<!--配置需要增强的目标对象-->
<property name="target" ref="someService"></property>
<!--做怎么样的增强-->
<property name="interceptorNames" value="throwadvise"></property>
</bean>
</beans>
测试类:
/**
* 异常增强
*/
@Test
public void Test(){
ApplicationContext context=new ClassPathXmlApplicationContext("applicationContextExceptionAdvice.xml");
ISomeService someService=(ISomeService)context.getBean("proxyService");
try {
someService.SomeService();
} catch (Exception e) {
e.printStackTrace();
}
}
结果: