#35 springboot: auto config - db config

springboot/autoconfig/src/main/java/hello/config/DbConfig.java

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+package hello.config;
+
+import com.zaxxer.hikari.HikariDataSource;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.support.JdbcTransactionManager;
+import org.springframework.transaction.TransactionManager;
+
+import javax.sql.DataSource;
+
+@Slf4j
+@Configuration
+public class DbConfig {
+
+    @Bean
+    public DataSource dataSource() {
+        log.info("dataSource 빈 등록");
+        HikariDataSource dataSource = new HikariDataSource();
+        dataSource.setDriverClassName("org.h2.Driver");
+        dataSource.setJdbcUrl("jdbc:h2:mem:test");
+        dataSource.setUsername("sa");
+        dataSource.setPassword("");
+        return dataSource;
+    }
+
+    @Bean
+    public TransactionManager transactionManager() {
+        log.info("transactionManager 빈 등록");
+        return new JdbcTransactionManager(dataSource());
+    }
+
+    @Bean
+    public JdbcTemplate jdbcTemplate() {
+        log.info("jdbcTemplate 빈 등록");
+        return new JdbcTemplate(dataSource());
+    }
+}

springboot/autoconfig/src/main/java/hello/member/Member.java

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+package hello.member;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class Member {
+
+    private String memberId;
+    private String name;
+}

springboot/autoconfig/src/main/java/hello/member/MemberRepository.java

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+package hello.member;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.jdbc.core.BeanPropertyRowMapper;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+@RequiredArgsConstructor
+public class MemberRepository {
+
+    public final JdbcTemplate template;
+
+    public void initTable() {
+        template.execute(
+                "create table member(member_id varchar primary key, name varchar)"
+        );
+    }
+
+    public void save(Member member) {
+        template.update(
+                "insert into member(member_id, name) values (?, ?)",
+                member.getMemberId(), member.getName()
+        );
+    }
+
+    public Member find(String memberId) {
+        return template.queryForObject(
+                "select member_id, name from member where member_id=?",
+                BeanPropertyRowMapper.newInstance(Member.class),
+                memberId
+        );
+    }
+
+    public List<Member> findAll() {
+        return template.query(
+                "select member_id, name from member",
+                BeanPropertyRowMapper.newInstance(Member.class)
+        );
+    }
+}

springboot/autoconfig/src/test/java/hello/member/MemberRepositoryTest.java

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+package hello.member;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.transaction.annotation.Transactional;
+
+import static org.assertj.core.api.Assertions.*;
+
+@SpringBootTest
+class MemberRepositoryTest {
+
+    @Autowired
+    MemberRepository memberRepository;
+
+    @Transactional
+    @Test
+    void memberTest() {
+        Member member = new Member("idA", "memberA");
+        memberRepository.initTable();
+        memberRepository.save(member);
+
+        Member findMember = memberRepository.find(member.getMemberId());
+
+        assertThat(findMember.getMemberId()).isEqualTo(member.getMemberId());
+        assertThat(findMember.getName()).isEqualTo(member.getName());
+    }
+}