spring实现AOP

Posted 2020-10-10 ruanjiancainiao

一、.默认advisor自动代理生成器（实现前置增强）

    1.编写接口类

public interface ISomeService {
    public void doSome();
    public void add();
}

　2.实现接口类中的方法

public class SomeService implements ISomeService {
    public void doSome() {
        System.out.println("code  ok");
    }

    public void add() {
        System.out.println("=========log===============");
    }
}

　3.编写增强类

  

public class MyBeforeAdvice implements MethodBeforeAdvice {
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        System.out.println("执行前置增强");
    }
}

　4.写配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns: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
">
    <!--目标对象-->
    <bean id="SomeService" class="cn.happy.service.SomeService"></bean>

    <!--增强  通知-->
    <bean  id="beforeAdvice" class="cn.happy.service.MyBeforeAdvice"></bean><!--前置增强-->
    
      <!-- 使用名称匹配方法切入点顾问NameMatchMethodPointcutAdvisor-->
 <bean  id="beforeAdvisor" class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor">
       <!-- <!–顾问 Advisor 包装通知， 那个方法需要增强–>-->
        <property name="advice" ref="beforeAdvice"></property>
        <property name="mappedNames" value="doSome"></property>
    </bean>

    <!--默认advisor自动代理生成器  有几个目标方法都会增强，但是只能对顾问自动代理，不能自动代理通知-->
    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"></bean>

</beans>

　5.测试方法

　

public class test01 {
    // AspectJ 
    @Test
    public void testAspect(){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        ISomeService someService= (ISomeService)context.getBean("SomeService");
        someService.add();
        someService.doSome();
    }

 6.测试结果