Spring中的异常增强

Posted 2020-10-10 努力奋斗吧

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：