关于同类业务有多个分支的接口设计

同业务多分支的接口设计

场景说明
比如处于下游的系统，在接收源系统的计划订单的时候，因订单的种类比较多，例如：采购订单、销售订单、调拨订单、预售订单等待，如果这些订单的差异比较大，需要分开建多个表，这样后台接口就需要设计一番了。
下面就按步骤直接贴代码案例
第一步: 创建一个接口，定义接收订单的方法;
public interface OrderRepeaterServiceI {

 Result receiveOrder(ReceiveProductOrder order);

}

第二步: 定义接口的实现类，2个@Service
br/>@Service
br/>@Override
System.out.println("采购订单执行分支...");
return null;
}

@Service
public class SaleOrderServiceImpl implements OrderRepeaterServiceI {@Override
br/>@Override
System.out.println("销售订单执行分支...");
return null;
}
}

第三步: 定义分发器服务@Service
br/>@Service

@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("订单类型未知异常.");
    }
    return Result.successWithData("成功");
}

}

第四步: 定义接收源系统的控制器@Controller
br/>@Controller
public class OrderApiController {

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("接口测试异常.");
        return Result.errorWithData("测试异常");
    }
}

}