Spring-boot와 MongoDB 연동하기

MongoDB Cluster 생성

mongosh(MongoDB Shell) 설치

mongosh로 MongoDB Cluster에 접근

Database 및 Collection 생성

Spring-boot 프로젝트와 MongoDB 연결

Spring-boot와 MongoDB 연동 테스트

트러블 슈팅

1. MongoDB Cluster 생성

MongoDB 클라우드 주소

2. mongosh(MongoDB Shell) 설치

mogosh 설치 가이드

MongoDB public GPG key 발급 및 저장

$ wget -qO- https://www.mongodb.org/static/pgp/server-7.0.asc | sudo tee /etc/apt/trusted.gpg.d/server-7.0.asc

우분투 버전 확인

$ lsb_release -dc

MongoDB를 위한 list파일 생성

$ echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/7.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-7.0.list

mongosh 패키지 설치

$ sudo apt-get update
$ sudo apt-get install -y mongodb-mongosh
$ mongosh --version

3. mongosh로 MongoDB Cluster에 접근

$ mongosh "mongodb+srv://cluster0.jcm6x0k.mongodb.net/" --apiVersion 1 --username hellospring89

4. Database 및 Collection 생성

5. Spring-boot 프로젝트와 MongoDB 연결

MongoDB와 Spring-boot 연동 가이드

스프링 프로젝트 코드 구조

build.gradle에 Dependency 추가
application.properties에 MongoDB 접속정보 기입

spring.data.mongodb.uri=mongodb+srv://hellospring89:<password>@cluster0.jcm6x0k.mongodb.net/Food
spring.data.mongodb.database=Food

Entity 생성

package hello.core.food;

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

@Document(collection = "KoreanFood")
@Getter
@Setter
@NoArgsConstructor
public class KoreanFood {
    @Id
    private String id;
    private String name;
    private String calorie;

    public KoreanFood(String id, String name, String calorie) {
        super();
        this.id = id;
        this.name = name;
        this.calorie = calorie;
    }
}

Repository 인터페이스 생성

package hello.core.food;

import java.util.List;
import java.util.Optional;

public interface FoodRepository {
    KoreanFood save(KoreanFood food);
    Optional<KoreanFood> findById(Long id);
    Optional<KoreanFood> findByName(String name);
    List<KoreanFood> findAll();
}

MongoRepository 인터페이스 생성

package hello.core.food;

import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface MongoFoodRepository extends MongoRepository<KoreanFood, String>, FoodRepository {
    
}

서비스 인터페이스 생성

package hello.core.food;

import java.util.Optional;

public interface FoodService {
    void register(KoreanFood food);
    Optional<KoreanFood> find(Long foodId);
}

서비스 구현체 생성

package hello.core.food;

import java.util.Optional;

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

@Service
public class FoodServiceImpl implements FoodService{
    private final FoodRepository foodRepository;

    @Autowired
    public FoodServiceImpl(FoodRepository foodRepository) {
        this.foodRepository = foodRepository;
    }

    @Override
    public void register(KoreanFood food) {
        foodRepository.save(food);
    }

    @Override
    public Optional<KoreanFood> find(Long foodId) {
        return foodRepository.findById(foodId);
    }
    
}

6. Spring-boot와 MongoDB 연동 테스트

7. 트러블 슈팅

1) EC2에서 MongoDB로 네트워크 엑세스 실패

오류원인
오류해결

MongoDB Cluster에서, 허용되는 IP 목록에 AWS EC2의 Public IP 주소를 등록

2) mongosh로 DB삭제 실패

오류원인

사용자에게 권한 없음
오류해결

사용자에게 Atlas admin 권한 부여

3) Ec2로 배포하는 과정에서 오류

오류원인

codedeploy-agent 로그 :

	2023-12-29T07:08:30 ERROR [codedeploy-agent(1656)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Network error: #<Seahorse::Client::NetworkingError: Failed to open TCP connection to codedeploy-commands.ap-northeast-2.amazonaws.com:443 (getaddrinfo: Temporary failure in name resolution)>
	2023-12-29T07:08:41 INFO  [codedeploy-agent(1656)]: Version file found in /opt/codedeploy-agent/.version with agent version OFFICIAL_1.6.0-49_deb.
	2023-12-29T07:08:43 INFO  [codedeploy-agent(1656)]: [Aws::CodeDeployCommand::Client 0 2.114929 3 retries] poll_host_command(host_identifier:"arn:aws:ec2:ap-northeast-2:885183918650:instance/i-0e3d0bcc19888a4b3") Seahorse::Client::NetworkingError Failed to open TCP connection to codedeploy-commands.ap-northeast-2.amazonaws.com:443 (getaddrinfo: Temporary failure in name resolution)

	2023-12-29T07:08:43 ERROR [codedeploy-agent(1656)]: InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Error polling for host commands: Seahorse::Client::NetworkingError - Failed to open TCP connection to codedeploy-commands.ap-northeast-2.amazonaws.com:443 (getaddrinfo: Temporary failure in name resolution) - /usr/lib/ruby/2.7.0/net/http.rb:960:in `initialize'


	InstanceAgent::Plugins::CodeDeployPlugin::CommandPoller: Network error: #<Seahorse::Client::NetworkingError: Failed to open TCP connection to codedeploy-commands.ap-northeast-2.amazonaws.com:443 (getaddrinfo: Temporary failure in name resolution)>