인프런 커뮤니티 질문&답변

 

 

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APPLICATION FAILED TO START

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Description:

 

Parameter 0 of constructor in hello.core.member.MemberServiceImpl required a single bean, but 2 were found:

- memoryMemberRepository: defined in file [/Users/choewonjun/IdeaProjects/core/out/production/classes/hello/core/member/MemoryMemberRepository.class]

- memberRepository: defined by method 'memberRepository' in class path resource [hello/core/AppConfig.class]

 

 

Action:

 

Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

 

위와 같이 에러가 발생합니다. 아마도 싱글톤이 하나가 아니라 두개가 정의되어있다는것 같은데 아무리 찾아도 왜 두개가 등록 되어 있는지 모르겠어요 ㅠㅠ

 

 

 

 

 

MemberServiceImpl

package hello.core.member;

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

@Component
public class MemberServiceImpl implements MemberService{

//	private final MemberReposiroty memberReposiroty = new MemoryMemberRepository(); 이것은 마치 배우가 직접 담당 배역을 설정
	private final MemberReposiroty memberReposiroty;

	@Autowired
	public MemberServiceImpl(MemberReposiroty memberReposiroty) {
		System.out.println("memberReposiroty = " + memberReposiroty);
		System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
		this.memberReposiroty = memberReposiroty;
	}

	@Override
	public void join(Member member) {
		memberReposiroty.save(member);
	}

	@Override
	public Member findMember(Long memberId) {
		return memberReposiroty.findbyID(memberId);
	}

	// 테스트 용도
	public MemberReposiroty getMemberReposiroty(){
		return memberReposiroty;
	}
}

 

MemoryMemberRespository

package hello.core.member;


import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;


@Component
public class MemoryMemberRepository implements MemberReposiroty {

	private static Map<Long, Member> store = new HashMap<>();

	@Override
	public void save(Member member) {
		store.put(member.getId(), member);
	}

	@Override
	public Member findbyID(Long memberID) {
		return store.get(memberID);
	}
}

 

 

AutoAppConfig

package hello.core;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;

@Configuration
@ComponentScan( // 스캔해서 빈에 자동 등록
//		basePackages = "hello.core.member",
		excludeFilters = @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = Configuration.class)
)

public class AutoAppConfig {

}

 

AppConfig

package hello.core;

import hello.core.discount.DiscountPolicy;
import hello.core.discount.FIxDiscountPolicy;
import hello.core.discount.RateDiscountPolicy;
import hello.core.member.*;
import hello.core.order.OrderService;
import hello.core.order.OrderServiceImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class AppConfig {

	@Bean
	public MemberService memberService(){
		System.out.println("call AppConfig.memberService");
		return new MemberServiceImpl(memberRepository());
	}

	@Bean
	public MemberReposiroty memberRepository() {
		System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
		System.out.println("call AppConfig.memberRepository");
		return new MemoryMemberRepository();
	}

	@Bean
	public OrderService orderService(){
		System.out.println("call AppConfig.orderService");
		return new OrderServiceImpl(memberRepository() , discountPolicy());
	}

	@Bean
	public DiscountPolicy discountPolicy() {
		return new RateDiscountPolicy();
	}
}