<dependency>
<groupId>jakarta.persistence</groupId>
<artifactId>jakarta.persistence-api</artifactId>
<version>2.2.3</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>org.eclipse.persistence.jpa</artifactId>
<version>3.0.0</version>
</dependency>
properties
spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "name")
private String name;
}
@Repository
public class UserRepository {
@PersistenceContext
private EntityManager entityManager;
public void save(User user) {
entityManager.persist(user);
}
public User findById(Long id) {
return entityManager.find(User.class, id);
}
}
@Service
@Transactional
public class UserService {
@Autowired
private UserRepository userRepository;
public void saveUser(User user) {
userRepository.save(user);
}
public User findUserById(Long id) {
return userRepository.findById(id);
}
}
@RunWith(SpringRunner.class)
@SpringBootTest
public class UserServiceTest {
@Autowired
private UserService userService;
@Test
public void testSaveUser() {
User user = new User();
userService.saveUser(user);
}
@Test
public void testFindUserById() {
Long id = 1L;
User user = userService.findUserById(id);
System.out.println(user.getName());
}
}
