MyBatis 적용2 - 설정과 실행

MyBatisItemRepository

package hello.itemservice.repository.mybatis;
import hello.itemservice.domain.Item;
import hello.itemservice.repository.ItemRepository;
import hello.itemservice.repository.ItemSearchCond;
import hello.itemservice.repository.ItemUpdateDto;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Repository;
import java.util.List;
import java.util.Optional;
@Repository
@RequiredArgsConstructor
public class MyBatisItemRepository implements ItemRepository { private final ItemMapper itemMapper;
    @Override
    public Item save(Item item) {
        itemMapper.save(item);
        return item;
    }
    @Override
    public void update(Long itemId, ItemUpdateDto updateParam) {
        itemMapper.update(itemId, updateParam);
    }
    @Override
    public Optional<Item> findById(Long id) {
        return itemMapper.findById(id);
    }
    @Override
    public List<Item> findAll(ItemSearchCond cond) {
        return itemMapper.findAll(cond);
    }
}

● ItemRepository 를 구현해서 MyBatisItemRepository 를 만들자.
● MyBatisItemRepository 는 단순히 ItemMapper 에 기능을 위임한다.

 

 

 

 

 

MyBatisConfig

package hello.itemservice.config;
import hello.itemservice.repository.ItemRepository;
import hello.itemservice.repository.mybatis.ItemMapper;
import hello.itemservice.repository.mybatis.MyBatisItemRepository;
import hello.itemservice.service.ItemService;
import hello.itemservice.service.ItemServiceV1;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;
@Configuration
@RequiredArgsConstructor
public class MyBatisConfig {
    private final ItemMapper itemMapper;
    @Bean
    public ItemService itemService() {
        return new ItemServiceV1(itemRepository());
    }
    @Bean
    public ItemRepository itemRepository() {
        return new MyBatisItemRepository(itemMapper);
    }
}

● MyBatisConfig 는 ItemMapper 를 주입받고, 필요한 의존관계를 만든다.

 

 

 

 

ItemServiceApplication - 변경

package hello.itemservice;

import hello.itemservice.config.*;
import hello.itemservice.repository.ItemRepository;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Profile;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;


@Slf4j
//@Import(MemoryConfig.class)
//@Import(JdbcTemplateV1Config.class)
//@Import(JdbcTemplateV2Config.class)
//@Import(JdbcTemplateV3Config.class)
@Import(MyBatisConfig.class)
@SpringBootApplication(scanBasePackages = "hello.itemservice.web")
public class ItemServiceApplication {

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

   @Bean
   @Profile("local")
   public TestDataInit testDataInit(ItemRepository itemRepository) {
      return new TestDataInit(itemRepository);
   }
/*

   @Bean
   @Profile("test")
   public DataSource dataSource() {
      log.info("메모리 데이터베이스 초기화");
      DriverManagerDataSource dataSource = new DriverManagerDataSource();
      dataSource.setDriverClassName("org.h2.Driver");
      dataSource.setUrl("jdbc:h2:mem:db;DB_CLOSE_DELAY=-1");
      dataSource.setUsername("sa");
      dataSource.setPassword("");
      return dataSource;
   }
*/

}

● @Import(MyBatisConfig.class) : 앞서 설정한 MyBatisConfig.class 를 사용하도록 설정했다.

 

 

 

 

 

 

테스트를 실행하자

먼저 ItemRepositoryTest 를 통해서 리포지토리가 정상 동작하는지 확인해보자. 테스트가 모두 성공해야 한다.

 

 

 

 

애플리케이션을 실행하자

ItemServiceApplication 를 실행해서 애플리케이션이 정상 동작하는지 확인해보자. 주의! H2 데이터베이스 서버를 먼저 실행해야 한다.

 

 

 

 

 

 

 

 

출처 : 김영환 스프링 DB2 강의