<dependency>
<groupId>javax.persistence</groupId>
<artifactId>javax.persistence-api</artifactId>
<version>2.2</version>
</dependency>
@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column(name = "name")
private String name;
// Constructors, Getters and Setters
}
@Repository
public class UserDao {
@PersistenceContext
private EntityManager entityManager;
public void save(User user) {
entityManager.persist(user);
}
public User findById(Long id) {
return entityManager.find(User.class, id);
}
// Other methods for CRUD operations
}
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
<property name="persistenceUnitName" value="persistenceUnit" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
@Service
@Transactional
public class UserService {
@Autowired
private UserDao userDao;
public void saveUser(User user) {
userDao.save(user);
}
public User getUserById(Long id) {
return userDao.findById(id);
}
// Other service methods
}
