SpringIOC框架的简单实现步骤

     <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.5</version>
        </dependency>

    public interface Pet {
    void say();
}

    public class Person {
    private String name;
    private Pet pet;

    public void setName(String name) {
        this.name = name;
    }

    public void setPet(Pet pet) {
        this.pet = pet;
    }

    public void keepPet() {
        System.out.println(name + " 比" + pet + " 可爱，因为它会说");
        pet.say();
    }
}

public class Dog implements Pet{
    private String name;

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return name;
    }
    public void say(){
        System.out.println("WangWang");
    }
}

<?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="dog" class="Ex_04.Dog">
        <property name="name" value="哈士奇"></property>
    </bean>
    <bean id="person" class="Ex_04.Person">
        <property name="name" value="拉布拉多"></property>
        <property name="pet" ref="dog"></property>
    </bean>
</beans>