<dependencies>
<!-- Spring ORM -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.3.9</version>
</dependency>
<!-- Hibernate ORM -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.5.6.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
</dependencies>
properties
spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=password
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect
spring.jpa.hibernate.ddl-auto=update
@Entity
@Table(name = "User")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String name;
}
@Repository
public class UserRepository {
@Autowired
private EntityManager entityManager;
public User findById(Long id) {
return entityManager.find(User.class, id);
}
public void save(User user) {
entityManager.persist(user);
}
public void update(User user) {
entityManager.merge(user);
}
public void delete(User user) {
entityManager.remove(user);
}
}
@RestController
public class UserController {
@Autowired
private UserRepository userRepository;
@GetMapping("/user/{id}")
public User getUserById(@PathVariable Long id) {
return userRepository.findById(id);
}
@PostMapping("/user")
public void createUser(@RequestBody User user) {
userRepository.save(user);
}
@PutMapping("/user")
public void updateUser(@RequestBody User user) {
userRepository.update(user);
}
@DeleteMapping("/user")
public void deleteUser(@RequestBody User user) {
userRepository.delete(user);
}
}
