VIP31/spring-demo/src/main/java/com/sf/ioc/anno/House.java

package com.sf.ioc.anno;

import jakarta.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 教室
 * 构造类和类之间的组合关系  区别于继承关系
 */
@Component
// <bean id="house">
public class House {

    /**
     * 教室里有一把椅子
     */
    @Autowired
    private Chair chair;

    // 使用@Autowired 是先根据类型来匹配对象
    //   如果类型对应的对象有多个 可以结合 @Qualifier来声明名字
    // 使用@Resource 是先根据名字来匹配对象
    // Could not autowire. There is more than one bean of 'Plane' type.
//    @Autowired @Qualifier("desk")
//    @Autowired @Qualifier("box")

//    @Resource(name = "desk")
//    private Plane plane;
    @Resource
    private Plane desk;

    public House() {
        System.out.println("House 构造器");
    }

    public void setChair(Chair chair) {
        System.out.println("House setChair");
        this.chair = chair;
    }

    @Override
    public String toString() {
        return "House{" +
                "chair=" + chair +
                ", plane=" + desk +
                '}';
    }
}