[Spring Boot] Mongo DB

1. MongoDB

• JSON 기반의 도큐먼트 데이터베이스
• 스키마가 없음
• Redis와 비슷하게 콘솔에 접근해서 확인 가능

 

 

 

 

 

2. 의존성 추가

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

 

 

 

 

 

 

3. MongoDB 설치 및 실행 (도커)

① MongoDB 설치

docker run -p 27017:27017 --name mongo_boot -d mongo

 

 

 

② 실행

docker exec -i -t mongo_boot bash
mongo

 

 

 

 

 

 

 

4. 스프링 데이터 몽고DB

① collection
: table이름 정도라고 보면 됨

@Document(collection = "accounts")
public class Account {

   @Id
   private String id;
   private String username;
   private String email;
   
   // getter, setter 생략
}

 

 

 

 

 

 

 

② MongoTemplate

@SpringBootApplication
public class SpringBootMongoApplication {

   @Autowired
   MongoTemplate mongoTemplate;

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

   @Bean
   public ApplicationRunner applicationRunner() {
      return args -> {
         Account account = new Account();
         account.setEmail("aaa@bbb");
         account.setUsername("aaa");

         mongoTemplate.insert(account);

         System.out.println("finished");
      };
   }
}

 

- 실행 전

 

- 실행 후

 

 

 

 

 

 

 

 

 

③ MongoRepository

public interface AccountRepository extends MongoRepository<Account, String> {
}

 

@SpringBootApplication
public class SpringBootMongoApplication {

   @Autowired
   AccountRepository accountRepository;

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

   @Bean
   public ApplicationRunner applicationRunner() {
      return args -> {
         Account account = new Account();
         account.setEmail("hhlin@email.com");
         account.setUsername("hhlin");

         accountRepository.insert(account);

         System.out.println("finished");
      };
   }
}

 

- 실행 후

 

 

 

 

 

 

 

 

 

 

 

④ 내장형 MongoDB (테스트용)

<dependency>
    <groupId>de.flapdoodle.embed</groupId>
    <artifactId>de.flapdoodle.embed.mongo</artifactId>
    <scope>test</scope>
</dependency>

 

 

 

 

 

 

 

 

 

 

⑤ @DataMongoTest

: Mongo Repository 관련 빈들만 등록이 됨

-> AccountRepository 주입받아서 사용 가능

 

public interface AccountRepository extends MongoRepository<Account, String> {
   Optional<Account> findByEmail(String email);
}

 

@RunWith(SpringRunner.class)
@DataMongoTest
@TestPropertySource(properties = "spring.mongodb.embedded.version=3.5.5")
public class AccountRepositoryTest {

   @Autowired
   AccountRepository accountRepository;

   @Test
   public void findByEmail() {
      Account account = new Account();
      account.setUsername("hyelin");
      account.setEmail("hyelin@email.com");

      accountRepository.save(account);

      Optional<Account> byId = accountRepository.findById(account.getId());
      assertThat(byId).isNotEmpty();

      Optional<Account> byEmail = accountRepository.findByEmail(account.getEmail());
      assertThat(byEmail).isNotEmpty();
      assertThat(byEmail.get().getUsername()).isEqualTo("hhlin");
   }
}

 

- 실행 후 : 운영 db는 변화 없음

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

https://www.inflearn.com/course/%EC%8A%A4%ED%94%84%EB%A7%81%EB%B6%80%ED%8A%B8/dashboard

스프링 부트 개념과 활용 - 인프런 | 강의

https://www.mongodb.com/

MongoDB: The Application Data Platform

https://www.samsungsds.com/kr/insights/1232564_4627.html

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