場景說明
好比處於下游的系統,在接收源系統的計劃訂單的時候,因訂單的種類比較多,例如:採購訂單、銷售訂單、調撥訂單、預售訂單等待,若是這些訂單的差別比較大,須要分開建多個表,這樣後臺接口就須要設計一番了。
下面就按步驟直接貼代碼案例
第一步: 建立一個接口,定義接收訂單的方法;
public interface OrderRepeaterServiceI {api
Result receiveOrder(ReceiveProductOrder order);
}app
第二步: 定義接口的實現類,2個br/>@Service
public class PurchaseOrderServiceImpl implements OrderRepeaterServiceI {br/>@Override
public Result receiveOrder(ReceiveProductOrder order) {
System.out.println("採購訂單執行分支...");
return null;
}ide
@Service
public class SaleOrderServiceImpl implements OrderRepeaterServiceI {br/>@Override
public Result receiveOrder(ReceiveProductOrder order) {
System.out.println("銷售訂單執行分支...");
return null;
}
}測試
第三步: 定義分發器服務br/>@Service
public class OrderRepeaterService {設計
@Resource private OrderRepeaterServiceI purchaseOrderServiceImpl; @Resource private OrderRepeaterServiceI saleOrderServiceImpl; public Result receiveOrder(String orderType, ReceiveProductOrder order) throws Exception { OrderRepeaterServiceI orderService = null; switch (orderType) { case "10" : orderService = purchaseOrderServiceImpl;break; case "20" : orderService = saleOrderServiceImpl;break; } if (orderService != null) { orderService.receiveOrder(order); } else { throw new RuntimeException("訂單類型未知異常."); } return Result.successWithData("成功"); }
}code
第四步: 定義接收源系統的控制器br/>@Controller
@RequestMapping(value = "/mtsapi")
public class OrderApiController {接口
private static final Logger logger = Logger.getLogger(OrderSapApiController.class); @Resource private OrderRepeaterService orderRepeaterService; @RequestMapping(value = "/testService") @ResponseBody public Result testService(String orderType) { try { ReceiveProductOrder order = new ReceiveProductOrder(); order.setOrderTypeCode("10"); order.setRelatedDocCode("SO18031610001"); return orderRepeaterService.receiveOrder(orderType, order); } catch (Exception e) { logger.error("接口測試異常."); return Result.errorWithData("測試異常"); } }
}get