Spring Boot Jpa 적용

1. pom.xml 추가

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

2. Entity 파일 생성

 - @data 어노테이션은 lombok 을 사용해서 나온것

 - int -> Integer 형으로 변경. primitive type 은 사용불가!!

package com.edentns.rest.gateway.Entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import lombok.Data;

@Data
@Entity
public class User {
	@Id
	@GeneratedValue(strategy = GenerationType.SEQUENCE)
	private Integer user_seq;
	
	@Column(length =  50, nullable = true)
	private String user_name;
	
	@Column(length =  50, nullable = true)
	private String user_type;
	
}

3. Repository 생성

- Interface 로 생성하되 Jparepository 를 상속 받으면 자동으로 CRUD 메소드 사용가능.

package com.edentns.rest.gateway.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.edentns.rest.gateway.Entity.User;


@Repository
public interface UserRepository extends JpaRepository<User, Integer>{
}

4. Test 코드 생성

package com.edentns.rest.gateway;

import java.util.List;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.edentns.rest.gateway.Entity.User;
import com.edentns.rest.gateway.repository.UserRepository;

@RunWith(SpringRunner.class)
@SpringBootTest
public class RepositoryTests {
	private final Logger logger = LoggerFactory.getLogger(this.getClass().getSimpleName());
	
	@Autowired
	UserRepository userRepository;
	
	@Test
	public void repositoryTests() throws Exception {
		List<User> userList = userRepository.findAll();
		logger.info("userList : {}", userList);
	}	
}

테스트완료.