Spring 第一个程序

使用 Spring 管理对象的第一个程序。

一、项目结构

二、项目文件

1. Driver 接口

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public interface Driver {
    void drive();
}

2. Car 类

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public class Car implements Vehicle {
    @Override
    public void work() {
        System.out.println("car正在工作");
    }
}

3. Driver 接口

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public interface Driver {
    void drive();
}

4. DriverZhang 类

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public class DriverZhang implements Driver {
    Vehicle vehicle;

    public void setVehicle(Vehicle vehicle) {
        this.vehicle = vehicle;
    }

    @Override
    public void drive() {
        System.out.println("DriverZhang正在工作");
        vehicle.work();
    }
}

5. beans.xml

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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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">

    <bean id="car" class="pojo.Car"/>

    <bean id="driverZhang" class="pojo.DriverZhang">
        <property name="vehicle" ref="car"/>
    </bean>

</beans>

6. pom.xml

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···
	<dependencies>
        ···
		<!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.0.RELEASE</version>
        </dependency>
        ···
    </dependencies>
···

三、运行测试

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public void test() {
    // 获取Spring的上下文对象
    ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
    Driver driverZhang = (Driver) context.getBean("driverZhang");
    driverZhang.drive();
}

参考