📅  最后修改于: 2023-12-03 15:28:40.750000             🧑  作者: Mango
GATE MOCK 2017是一个模拟GATE考试的项目,第42章主题为“门”。本项目旨在帮助计算机科学领域的学生练习他们的编程和算法技能,测试他们的思维能力和解决问题的能力。
任务是设计和实现一个门控制系统。系统需要支持以下操作:
本项目的实现使用Java编写,使用Spring Boot作为应用程序框架,使用JPA作为数据持久化层。以下是应用程序中的关键实现细节:
定义门的模型类Door:
@Entity
@Data
public class Door {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@NonNull
private String name;
private boolean isOpen;
}
定义存储库接口DoorRepository:
public interface DoorRepository extends JpaRepository<Door, Long> {
List<Door> findAll();
}
定义门控制服务DoorService:
@Service
@AllArgsConstructor
public class DoorService {
private DoorRepository doorRepository;
public Door addDoor(Door door) {
return doorRepository.save(door);
}
public void deleteDoor(Long id) {
doorRepository.deleteById(id);
}
public void setDoorState(Long id, boolean isOpen) {
Door door = doorRepository.findById(id).orElseThrow(IllegalArgumentException::new);
door.setOpen(isOpen);
doorRepository.save(door);
}
public boolean getDoorState(Long id) {
return doorRepository.findById(id)
.map(Door::isOpen)
.orElseThrow(IllegalArgumentException::new);
}
public List<Door> getDoorList() {
return doorRepository.findAll();
}
}
定义门控制的REST API DoorController:
@RestController
@RequestMapping("/doors")
@AllArgsConstructor
public class DoorController {
private DoorService doorService;
@PostMapping
public Door addDoor(@RequestBody Door door) {
return doorService.addDoor(door);
}
@DeleteMapping("/{id}")
public void deleteDoor(@PathVariable Long id) {
doorService.deleteDoor(id);
}
@PutMapping("/{id}")
public void setDoorState(@PathVariable Long id, @RequestBody boolean isOpen) {
doorService.setDoorState(id, isOpen);
}
@GetMapping("/{id}")
public boolean getDoorState(@PathVariable Long id) {
return doorService.getDoorState(id);
}
@GetMapping
public List<Door> getDoorList() {
return doorService.getDoorList();
}
}
本项目展示了如何使用Spring Boot和JPA实现一个门控制系统。本项目包括模型类,存储库,服务和REST API。通过这个例子,可以学习到如何使用Spring Boot和JPA开发可扩展的Web应用程序。