pom.xml
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
mybatis-spring-boot-starter
- 2.1.x vesrion : MyBatis 3.5+、Java 8+、Spring Boot 2.1+
- 2.0.x vesrion : MyBatis 3.5+、Java 8+、Spring Boot 2.0/2.1
- 1.3.x vesrion : MyBatis 3.4+、Java 6+、Spring Boot 1.5
현재까지 2.1.x 과 1.3.x 을 많이 사용한다.
application.properties 설정
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
application.yml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
password: ''
url: jdbc:mysql://localhost:3306/test
username: root
테이블 생성.sql
CREATE TABLE `User` (
`id` bigint NOT NULL AUTO_INCREMENT,
`name` varchar(100) COLLATE utf8mb4_general_ci DEFAULT NULL,
`age` int DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
User 도메인 생성
@Data
@NoArgsConstructor
public class User {
private Long id;
private String name;
private Integer age;
public User(String name, Integer age) {
this.name = name;
this.age = age;
}
}
Mapper interface 작성
@Mapper
public interface UserMapper {
@Select("SELECT * FROM USER WHERE NAME = #{name}")
User findByName(@Param("name") String name);
@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
int insert(@Param("name") String name, @Param("age") Integer age);
}
@Slf4j
@RunWith(SpringRunner.class)
@SpringBootTest
public class MybatisDemoApplicationTests {
@Autowired
private UserMapper userMapper;
@Test
@Rollback
public void test() throws Exception {
userMapper.insert("AAA", 20);
User u = userMapper.findByName("AAA");
Assert.assertEquals(20, u.getAge().intValue());
}
}
@Param
@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
int insert(@Param("name") String name, @Param("age") Integer age);
Map
@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name,jdbcType=VARCHAR}, #{age,jdbcType=INTEGER})")
int insertByMap(Map<String, Object> map);
Object
@Insert("INSERT INTO USER(NAME, AGE) VALUES(#{name}, #{age})")
int insertByUser(User user);
C,R,U,D mapper interface 작성
public interface UserMapper {
@Select("SELECT * FROM user WHERE name = #{name}")
User findByName(@Param("name") String name);
@Insert("INSERT INTO user(name, age) VALUES(#{name}, #{age})")
int insert(@Param("name") String name, @Param("age") Integer age);
@Update("UPDATE user SET age=#{age} WHERE name=#{name}")
void update(User user);
@Delete("DELETE FROM user WHERE id =#{id}")
void delete(Long id);
}
테스트 코드 작성
@Transactional
@RunWith(SpringRunner.class)
@SpringBootTest
public class MybatisDemoApplicationTests {
@Autowired
private UserMapper userMapper;
@Test
@Rollback
public void testUserMapper() throws Exception {
// insert 후 select 하여 검증
userMapper.insert("AAA", 20);
User u = userMapper.findByName("AAA");
Assert.assertEquals(20, u.getAge().intValue());
// update 후 select 하여 검증
u.setAge(30);
userMapper.update(u);
u = userMapper.findByName("AAA");
Assert.assertEquals(30, u.getAge().intValue());
// 데이터 삭제 및 select 검증
userMapper.delete(u.getId());
u = userMapper.findByName("AAA");
Assert.assertEquals(null, u);
}
}
Result 객체 바인딩
@Results({
@Result(property = "name", column = "name"),
@Result(property = "age", column = "age")
})
@Select("SELECT name, age FROM user")
List<User> findAll();
테스트 코드 작성
@Test
@Rollback
public void testUserMapper() throws Exception {
List<User> userList = userMapper.findAll();
for(User user : userList) {
Assert.assertEquals(null, user.getId());
Assert.assertNotEquals(null, user.getName());
}
}
