<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
properties
spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=db_username
spring.datasource.password=db_password
import javax.persistence.*;
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "first_name")
private String firstName;
@Column(name = "last_name")
private String lastName;
}
import org.springframework.data.jpa.repository.JpaRepository;
public interface UserRepository extends JpaRepository<User, Long> {
}
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping("/users")
public class UserController {
@Autowired
private UserRepository userRepository;
@GetMapping("/{id}")
public User getUser(@PathVariable Long id) {
return userRepository.findById(id).orElse(null);
}
@PostMapping("/")
public User createUser(@RequestBody User user) {
return userRepository.save(user);
}
}
