SpringMVC使用AOP监听方法推送数据

news2024/11/23 19:56:55

导入aop的maven依赖

<dependency>
   <groupId>org.aspectj</groupId>
   <artifactId>aspectjweaver</artifactId>
   <version>1.6.12</version>
</dependency>

创建一个spring的XML文件编写aop配置

<?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-3.0.xsd
            http://www.springframework.org/schema/aop
            http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

    <!-- 装配切面类 -->
    <bean id="mateDataServiceAspect" class="com.example.testproject.demo.aspect.MateDataServiceAspect"/>
    <!--可以配置多个 aop:config 用于监听多个切面-->
    <aop:config>
        <aop:pointcut id="myExecution" expression="execution(* com.example.testproject.demo.controller.DemoController.test2(..))"/>
        <aop:aspect ref="mateDataServiceAspect">
            <aop:before method="before" pointcut-ref="myExecution"/>
            <aop:after-returning method="afterReturning" pointcut-ref="myExecution" returning="methodResult"/>
        </aop:aspect>
    </aop:config>

</beans>

编写切面代码

public class MateDataServiceAspect {

    public void before() {
        System.out.println(">>>>>>>目录aop方法开始执行>>>>>>>>");
    }

    /**
     * 方法执行完后调用
     * @param joinPoint
     * @param methodResult
     */
    public void afterReturning(JoinPoint joinPoint, Object methodResult){
        // 方法执行完返回的结果
        System.out.println("监听方法的结果 " + methodResult);

        // 获取方法的入参
        Object[] args = joinPoint.getArgs();
        List<Object> objects = Arrays.asList(args);
        System.out.println("传入的参数：" + objects);

    }

}