用@Component注解代替@Configuration注解，定义bean

package com.timo.entity;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Repository;
import org.springframework.stereotype.Service;

/**
 * 这里可以写@Component,@Service,@Controller注解，写@Repository注解会报错
 * 报错的原因是在配置文件或者注解排除了@Repository.
 */
@Service
public class Dog {
//    @Value("pug")
    private String name;
//    @Value("18")
    private Integer age;

    public String getName() {
        return name;
    }

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

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

package com.timo.entity;

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

@Component
public class Master {
    @Autowired
    private Dog dog;
    private String name;

    public String getName() {
        return name;
    }

    public Master(String name) {
        this.name = name;
    }

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

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }
    public void showDogInfo(){
        System.out.println("name="+dog.getName());
        System.out.println("age="+dog.getAge());
    }
}

package com.timo.entity;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Lazy;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
import org.springframework.stereotype.Component;

@Component
public class FactoryMethodComponent {
    @Bean
    @Scope("prototype")
    public static Dog dog(){
        Dog dog = new Dog();
        dog.setAge(20);
        dog.setName("人民");
        return  dog;
    }
    @Bean
    public static Master master(){
        Master master = new Master("ouyangfeng");
        master.setDog(dog());

        return  master;
    }
    public void doWork(){
        System.out.println("I can do everything");
    }
}

测试类的代码如下：

package com.timo.test2;

import com.timo.entity.Dog;
import com.timo.entity.FactoryMethodComponent;
import com.timo.entity.Master;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Test5 {
    public static void main(String[] args) {
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(FactoryMethodComponent.class);
        Dog dog = applicationContext.getBean(Dog.class);
        System.out.println("name="+dog.getName());
        System.out.println("age="+dog.getAge());
        System.out.println("***********************");
        FactoryMethodComponent factoryMethodComponent = applicationContext.getBean(FactoryMethodComponent.class);
        factoryMethodComponent.doWork();
        Master master = applicationContext.getBean(Master.class);
        System.out.println("master "+master.getDog().getName());
    }
}