Spring Boot火车票订票购票票务系统设计与实现

由于原始代码较为复杂且涉及到火车票订票的具体业务逻辑，我们将提供核心的Spring Boot应用配置和服务层的简化示例。

// 火车票服务接口
public interface TicketService {
    Order queryOrder(String orderId);
    boolean isTicketLeft(String trainNumber, String from, String to);
    Order purchaseTicket(String trainNumber, String from, String to);
}
 
// 火车票服务实现
@Service
public class TicketServiceImpl implements TicketService {
 
    @Autowired
    private OrderRepository orderRepository;
 
    @Autowired
    private RestTemplate restTemplate;
 
    @Override
    public Order queryOrder(String orderId) {
        return orderRepository.findById(orderId).orElse(null);
    }
 
    @Override
    public boolean isTicketLeft(String trainNumber, String from, String to) {
        String url = "http://ts.sdo.com/train/left_ticket/?train_date=2023-03-01&station_train_code=" + trainNumber + "&from_station=" + from + "&to_station=" + to;
        String response = restTemplate.getForObject(url, String.class);
        // 根据响应结果判断是否有票
        return !"无".equals(response);
    }
 
    @Override
    public Order purchaseTicket(String trainNumber, String from, String to) {
        // 模拟下单操作
        Order order = new Order();
        order.setOrderId(UUID.randomUUID().toString());
        order.setTrainNumber(trainNumber);
        order.setFrom(from);
        order.setTo(to);
        orderRepository.save(order);
        return order;
    }
}
 
// 实体类Order
@Entity
public class Order {
    @Id
    private String orderId;
    private String trainNumber;
    private String from;
    private String to;
    // 省略getter和setter
}
 
// 仓库接口OrderRepository
public interface OrderRepository extends JpaRepository<Order, String> {
}
 
// 控制器类TicketController
@RestController
public class TicketController {
 
    @Autowired
    private TicketService ticketService;
 
    @GetMapping("/query_order")
    public Order queryOrder(@RequestParam String orderId) {
        return ticketService.queryOrder(orderId);
    }
 
    @GetMapping("/is_ticket_left")
    public boolean isTicketLeft(@RequestParam String trainNumber, @RequestParam String from, @RequestParam String to) {