leechoongyon

// build.gradle
implementation 'org.springframework.boot:spring-boot-starter-validation'

// controller

@Slf4j
@RestController
@RequiredArgsConstructor
public class MemberApiController {

leechoongyon

• build.gradle

// MapStruct
implementation 'org.mapstruct:mapstruct:1.4.2.Final'
annotationProcessor "org.mapstruct:mapstruct-processor:1.4.2.Final"
annotationProcessor(
        'org.projectlombok:lombok',
        'org.projectlombok:lombok-mapstruct-binding:0.1.0'
)

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gradle

• mysql 과 flyway 설정입니다.

runtimeOnly 'mysql:mysql-connector-java'
implementation 'org.flywaydb:flyway-core:7.10.0'

docker-compose

• docker 설정이며, terminal 에서 아래 명령어를 수행 시, container 가 만들어집니다.
  • docker-compose -p test-db up -d

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// MemberType.java

@Getter
public enum MemberType {
    GOLD("골드"),
    SILVER("실버")
    ;

    private String desc;

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# 예시에 사용된 테이블 DDL, DML

- TEAM : TEAM_MEMBER = 1 : n
- TEAM_MEMBER : MEMBER_ADDR = 1 : 1

# DDL
CREATE TABLE `team` (
  `team_id` bigint NOT NULL AUTO_INCREMENT,

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@Component
@RequiredArgsConstructor
public class MemberServiceImpl implements MemberService {

    private final MemberRepository memberRepository;

    @Override
    public String registerMember(MemberCommand.Create create) {
        Member member = memberRepository.save(create.toEntity());
        return member.getId();

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@RestController
@RequiredArgsConstructor
public class MemberApiController {

    @PostMapping("/api/v1/members")
    public ResponseEntity<?> registerMember(@RequestBody MemberDto.Create create) {
        return ResponseEntity.ok(create.getId());
    }

leechoongyon

package org.example.bigdecimal;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.math.BigDecimal;

public class BigDecimalConstructTest {

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@SpringBootApplication
@EnableZuulProxy
public class ZuulExampleApplication {

    public static void main(String[] args) {
        SpringApplication.run(ZuulExampleApplication.class, args);
    }

}

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public class StreamListToMapObjectTest {

    @Test
    @DisplayName("list를Map<String, DTO> 변환")
    public void streamListToMapObjectTest01() throws Exception {
        List<DtoA> list = new ArrayList<>();
        list.add(new DtoA("key1", "bcde"));
        list.add(new DtoA("key2", "bcde123"));

        Map<String, DtoB> map =