aop切面,获取参数

添加pom

<dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
</dependency>

配置MyAspect

public class MyAspect implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        return null;
    }

    public Object myAround(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
        Signature signature = proceedingJoinPoint.getSignature();

        //获取方法名
        System.out.println(signature.getName());
        //获取类名
        System.out.println(signature.getDeclaringTypeName());
        Object[] objs = proceedingJoinPoint.getArgs();
        //循环输出参数
        for (Object obj : objs) {
            System.out.println(obj.toString());
        }
        //方法执行前逻辑处理
        System.out.println("开始");
        Object obj = proceedingJoinPoint.proceed();
        //输出执行结果
        System.out.println(obj.toString());
        
        //方法执行后逻辑处理        
        System.out.println("结束");
        return obj;
    }
}

配置Service

public interface UserService {
    UserBean Say(UserBean str);
}

@Service
public class UsereServiceImpl implements UserService {

    @Override
    public UserBean Say(UserBean str) {
        System.out.println("User被创建。。。。。" + str.toString());
        str.setName("testtest");
        return str;
    }
}

1. 配置spring.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns="http://www.springframework.org/schema/beans"
       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">
    <bean name="myUserService" class="com.muyi.service.impl.UsereServiceImpl"/>
    <bean name="MyAspect" class="com.muyi.MyAspect"/>
    <aop:config proxy-target-class="true">
        <aop:aspect ref="MyAspect">
            <aop:pointcut id="myPointcut" expression="execution(* com.muyi.service.*.*(..))"></aop:pointcut>
            <aop:around method="myAround" pointcut-ref="myPointcut"/>
        </aop:aspect>
    </aop:config>
</beans>

Test

@Test
    public void bean2() {
        ApplicationContext context = new ClassPathXmlApplicationContext("bean1.xml");
        UserService userService = (UserService) context.getBean("myUserService");
        UserBean userBean = new UserBean();
        userBean.setAge(20);
        userBean.setName("test");
        userService.Say(userBean);
    }

运行结果

Say
com.muyi.service.impl.UsereServiceImpl
UserBean{name='test', age=20, car=null}
开始
User被创建。。。。。UserBean{name='test', age=20, car=null}
UserBean{name='testtest', age=20, car=null}
结束