由于题目没有提供具体的代码实现,以下是一个可能的示例代码:

Train.java:

public class Train {
    private String trainNo;
    private String departure;

    public Train(String trainNo, String departure) {
        this.trainNo = trainNo;
        this.departure = departure;
    }

    public String getTrainNo() {
        return trainNo;
    }

    public void setTrainNo(String trainNo) {
        this.trainNo = trainNo;
    }

    public String getDeparture() {
        return departure;
    }

    public void setDeparture(String departure) {
        this.departure = departure;
    }

    public void depart() {
        System.out.println("Train " + trainNo + " is departing from " + departure + " at " + new Date());
    }
}

TrainAspect.java:

public class TrainAspect {
    public void showDepartureTime(JoinPoint joinPoint) {
        Object[] args = joinPoint.getArgs();
        Train train = (Train) args[0];
        train.depart();
    }
}

ApplicationContext.xml:

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

    <bean id="train1" class="Train">
        <constructor-arg value="K123" />
        <constructor-arg value="Shanghai" />
    </bean>

    <bean id="train2" class="Train">
        <constructor-arg value="G456" />
        <constructor-arg value="Beijing" />
    </bean>

    <bean id="trainAspect" class="TrainAspect" />

    <aop:config>
        <aop:aspect ref="trainAspect">
            <aop:pointcut id="trainDeparture" expression="execution(* Train.depart()) and args(train)" />
            <aop:before pointcut-ref="trainDeparture" method="showDepartureTime" />
        </aop:aspect>
    </aop:config>

</beans>

TrainApp.java:

public class TrainApp {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("ApplicationContext.xml");

        Train train1 = context.getBean("train1", Train.class);
        train1.depart();

        Train train2 = context.getBean("train2", Train.class);
        train2.depart();
    }
}

运行结果将会输出类似如下的信息:

Train K123 is departing from Shanghai at Thu Jul 01 14:00:00 CST 2021
Train G456 is departing from Beijing at Thu Jul 01 15:00:00 CST 2021
``
有若干次火车已知火车的车次和出发地编写Springloc程序分别用setter注入和构造注入的方式构建火车对象当火车从出发地出发时使用切面程序显示出当前的时间和日期。请给出程序运行结果

原文地址: https://www.cveoy.top/t/topic/ebVp 著作权归作者所有。请勿转载和采集!

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