Use Lombok and add choosing from many beans

build.gradle

@@ -23,6 +23,8 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-actuator'
     compileOnly 'org.projectlombok:lombok'
 	annotationProcessor 'org.projectlombok:lombok'
+	testCompileOnly 'org.projectlombok:lombok'
+	testAnnotationProcessor 'org.projectlombok:lombok'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 

src/main/java/com/naver/shopping/member/Member.java

@@ -1,5 +1,10 @@
 package com.naver.shopping.member;
 
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
 public class Member {
     private Long id;
     private String name;
@@ -10,28 +15,4 @@ public Member(Long id, String name, Grade grade) {
         this.name = name;
         this.grade = grade;
     }
-
-    public Long getId() {
-        return id;
-    }
-
-    public void setId(Long id) {
-        this.id = id;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public void setName(String name) {
-        this.name = name;
-    }
-
-    public Grade getGrade() {
-        return grade;
-    }
-
-    public void setGrade(Grade grade) {
-        this.grade = grade;
-    }
 }

src/main/java/com/naver/shopping/member/MemberServiceImpl.java

@@ -1,17 +1,14 @@
 package com.naver.shopping.member;
 
+import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
 @Component
+@RequiredArgsConstructor
 public class MemberServiceImpl implements MemberService {
     private final MemberRepository memberRepository;
 
-    @Autowired
-    public MemberServiceImpl(MemberRepository memberRepository) {
-        this.memberRepository = memberRepository;
-    }
-
     @Override
     public void join(Member member) {
         memberRepository.save(member);

src/main/java/com/naver/shopping/order/Order.java

@@ -1,4 +1,8 @@
 package com.naver.shopping.order;
+
+import lombok.Getter;
+
+@Getter
 public class Order {
     private Long memberId;
     private String itemName;
@@ -26,20 +30,4 @@ public String toString() {
                 ", discountPrice=" + discountPrice +
                 '}';
     }
-
-    public Long getMemberId() {
-        return memberId;
-    }
-
-    public String getItemName() {
-        return itemName;
-    }
-
-    public int getItemPrice() {
-        return itemPrice;
-    }
-
-    public int getDiscountPrice() {
-        return discountPrice;
-    }
 }

src/main/java/com/naver/shopping/order/OrderServiceImpl.java

@@ -3,20 +3,16 @@
 import com.naver.shopping.member.Member;
 import com.naver.shopping.member.MemberRepository;
 import com.naver.shopping.discount.DiscountPolicy;
+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;
 
-    @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);

src/test/java/com/naver/shopping/autoScan/autoScanTest.java

@@ -16,6 +16,8 @@
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.stereotype.Component;
 
+import java.util.Map;
+
 public class autoScanTest {
 
     AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(AutoAppConfig.class);
@@ -47,6 +49,22 @@ void getPrimaryDiscountPolicy() {
 
     }
 
+    @Test
+    @DisplayName("여러 할인 정책 서비스중 선택")
+    void getAllDiscountPolicy() {
+        Member testMember = new Member(1L, "tester", Grade.VIP);
+        ac.getBean(MemberService.class).join(testMember);
+
+        Order fixServiceOrder = ac.getBean(OrderService3.class).createOrder(1L, "아이템1", 20000, "fixDiscountPolicy");
+        Order rateServiceOrder = ac.getBean(OrderService3.class).createOrder(1L, "아이템1", 20000, "rateDiscountPolicy");
+
+        System.out.println("fixServiceOrder = " + fixServiceOrder);
+        System.out.println("rateServiceOrder = " + rateServiceOrder);
+
+        Assertions.assertThat(fixServiceOrder.getDiscountPrice()).isEqualTo(1000);
+        Assertions.assertThat(rateServiceOrder.getDiscountPrice()).isEqualTo(2000);
+    }
+
     @Component
     static class OrderService1 implements OrderService{
         private MemberRepository memberRepository;
@@ -84,4 +102,23 @@ public Order createOrder(Long memberId, String itemName, int itemPrice) {
             return new Order(memberId, itemName, itemPrice, discountPrice);
         }
     }
+
+    @Component
+    static class OrderService3{
+        private MemberRepository memberRepository;
+        private Map<String, DiscountPolicy> discountPolicyMap;
+
+        @Autowired
+        public OrderService3(MemberRepository memberRepository, Map<String, DiscountPolicy> discountPolicyMap) {
+            this.memberRepository = memberRepository;
+            this.discountPolicyMap = discountPolicyMap;
+        }
+
+        public Order createOrder(Long memberId, String itemName, int itemPrice, String policyName) {
+            Member member = memberRepository.findById(memberId);
+            DiscountPolicy discountPolicy = discountPolicyMap.get(policyName);
+            int discountPrice = discountPolicy.discount(member, itemPrice);
+            return new Order(memberId, itemName, itemPrice, discountPrice);
+        }
+    }
 }