Java 在学习Spring时，通过构造函数参数0表达了不满意的依赖关系

我正在从《春天从这里开始》这本书中学习春天.在这里，我向Spring上下文中添加了类Parrot的两个Bean，并试图通过构造函数使用自动连接将Bean Parrot2注入Person类.然而，我一直收到

"通过构造函数参数0表示的不满足的依赖项:没有类型为‘beans.Parrot’的合格Bean.可用的:需要一个匹配的Bean，但发现2:Parrot1，Parrot2"错误.我搞不懂这是怎么发生的，因为我认为不会有问题，因为Person类构造函数参数与parrot2 Bean名称匹配.

配置类:

package config;

import beans.Parrot;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;


    @Configuration
    @ComponentScan(basePackages = "beans")
    public class ProjectConfig {

        @Bean
        public Parrot parrot1() {
            Parrot p = new Parrot();
            p.setName("Koko");
            return p;
        }

        @Bean
        public Parrot parrot2() {
            Parrot p = new Parrot();
            p.setName("Miki");
            return p;
        }
}

鹦鹉类:

package beans;

public class Parrot {
    private String name;

    public String getName() {
        return name;
    }

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

    @Override
    public String toString() {
        return "Parrot : " + name;
    }

Person类:

package beans;

import org.springframework.stereotype.Component;

@Component

public class Person {
    private String name = "Ella";

    private final Parrot parrot;

    public Person(Parrot parrot2) {
        this.parrot = parrot2;
    }

    public String getName() {
        return name;
    }

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

    public Parrot getParrot() {
        return parrot;
    }
}

主班:

package main;

import beans.Person;
import config.ProjectConfig;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Main {
    public static void main(String[] args) {
        var context = new AnnotationConfigApplicationContext(ProjectConfig.class);

        Person p = context.getBean(Person.class);

        System.out.println("Person's name: " + p.getName());
        System.out.println("Person's parrot: " + p.getParrot());
    }
}

错误:

 Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type 'beans.Parrot' available: expected single matching bean but found 2: parrot1,parrot2
Exception in thread "main" org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'person' defined in file [C:\Users\Ian36\IdeaProjects\BENAS\target\classes\beans\Person.class]: Unsatisfied dependency expressed through constructor parameter 0: No qualifying bean of type 'beans.Parrot' available: expected single matching bean but found 2: parrot1,parrot2
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:802)
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:241)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1354)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:561)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:975)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:960)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:625)
    at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:93)
    at main.Main.main(Main.java:9)
Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'beans.Parrot' available: expected single matching bean but found 2: parrot1,parrot2
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveNotUnique(DependencyDescriptor.java:218)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1420)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1353)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:911)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:789)
    ... 14 more

Process finished with exit code 1

我try 使用@限定符，看看它是否会改变什么，但我仍然收到相同的错误.