인프런 커뮤니티 질문&답변

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.

1. 강의 내용과 관련된 질문을 남겨주세요.
2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.
(자주 하는 질문 링크: https://bit.ly/3fX6ygx)
3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.
(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)

질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.
=========================================
[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? (예/아니오)
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)
3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)

[질문 내용]
여기에 질문 내용을 남겨주세요.

> Task :compileJava FAILED

C:\Users\user\Desktop\ȫ����\�ڵ�\core\src\main\java\hello\core\AppConfig.java:28: error: constructor OrderServiceImpl in class OrderServiceImpl cannot be applied to given types;

return new OrderServiceImpl(

^

required: no arguments

found: MemberRepository,DiscountPolicy

reason: actual and formal argument lists differ in length

1 error

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':compileJava'.

> Compilation failed; see the compiler error output for details.

* Try:

> Run with --info option to get more log output.

> Run with --scan to get full insights.

BUILD FAILED in 1s

1 actionable task: 1 executed

AppConfig랑 OrderServiceImpl은 강사님 코드랑 똑같이 했는데 어떤 것 때문에 안 되는지 모르겠습니다. 도와주세요.. 코드 첨부하겠습니다.

package hello.core;

import hello.core.discount.DiscountPolicy;
import hello.core.discount.FixDiscountPolicy;
import hello.core.discount.RateDiscountPolicy;
import hello.core.member.MemberRepository;
import hello.core.member.MemberService;
import hello.core.member.MemberServiceImpl;
import hello.core.member.MemoryMemberRepository;
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() {
        //1번
        System.out.println("call AppConfig.memberService");
        return new MemberServiceImpl(memberRepository());
    }
    @Bean
    public OrderService orderService() {
        //1번
        System.out.println("call AppConfig.orderService");
        return new OrderServiceImpl(memberRepository(), discountPolicy());
    }
    @Bean
    public MemberRepository memberRepository() {
        //2번? 3번?
        System.out.println("call AppConfig.memberRepository");
        return new MemoryMemberRepository();
    }
    @Bean
    public DiscountPolicy discountPolicy() {
        return new RateDiscountPolicy();
    }
}

package hello.core.order;

import hello.core.discount.DiscountPolicy;
import hello.core.discount.FixDiscountPolicy;
import hello.core.member.Member;
import hello.core.member.MemberRepository;
import hello.core.member.MemoryMemberRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
@RequiredArgsConstructor
public class OrderServiceImpl implements OrderService{

    private final MemberRepository memberRepository;
    private final DiscountPolicy discountPolicy;

    // 아래 생성자를 RequiredArgsConstructor이 만들어줌

    /*
    @Autowired
    public OrderServiceImpl(MemberRepository memberRepository, DiscountPolicy discountPolicy) {
        this.memberRepository = memberRepository;
        this.discountPolicy = discountPolicy;
    }
    */

    @Override
    public Order createOrder(Long memberId, String itemName, int itemPrice) {
        Member member = memberRepository.findById(memberId);
        int discountPrice=discountPolicy.discount(member, itemPrice);

        return new Order(memberId,itemName,itemPrice,discountPrice);
    }

    // 테스트 용도
    public MemberRepository getMemberRepository(){
        return memberRepository;
    }
}