Java應(yīng)用開發(fā)（中、高級）課件 任務(wù)3.4 實現(xiàn)菜品購買及支付流程模塊

任務(wù)4.實現(xiàn)菜品購買及支付流程模塊任務(wù)描述本任務(wù)將實現(xiàn)菜品購買及支付流程模塊，功能流程為：服務(wù)員主頁顯示所有菜品，將菜品加入到點餐車中，完成點餐流程。知識準(zhǔn)備1.國內(nèi)支付寶支付流程如下：

注意：本系統(tǒng)僅實現(xiàn)本地支付流程，并沒有調(diào)用第三方支付平臺接口，上面支付流程圖僅供學(xué)習(xí)參考。任務(wù)實施步驟1：實現(xiàn)參評購買及支付流程模塊后臺(1)在“com.chinasofti.ordersys.model”包中，新建OrderInfo類，用于實現(xiàn)訂單信息模型對象。此處代碼省略，請參考案例代碼。(2)在“com.chinasofti.ordersys.model”包中，新建OrderVO類，用于實現(xiàn)訂單信息視圖對象。此處代碼省略，請參考案例代碼。(3)在“com.chinasofti.ordersys.model”包中，新建OrderDishesInfo類，用于實現(xiàn)訂單菜品明細(xì)信息模型對象。此處代碼省略，請參考案例代碼。(4)在“com.chinasofti.ordersys.model”包中，新建OrderDishesVO類，用于實現(xiàn)訂單單菜品明細(xì)信息視圖對象。此處代碼省略，請參考案例代碼。(5)在“com.chinasofti.ordersys.model”包中，新建OrderDishes類，用于實現(xiàn)訂單對象與訂單單菜品明細(xì)關(guān)聯(lián)對象。此處代碼省略，請參考案例代碼。(6)在“com.chinasofti.ordersys.api.waiter”包中，新建WaiterDishesController類，用于實現(xiàn)菜品購買及支付流程模塊接口。?代碼如下：packagecom.chinasofti.ordersys.api.waiter;

importmon.result.PageResults;importmon.security.LoginUser;importmon.security.service.TokenService;importcom.chinasofti.ordersys.model.DishesInfo;importcom.chinasofti.ordersys.model.UserInfo;importcom.chinasofti.ordersys.service.admin.DishesService;importcom.chinasofti.ordersys.service.waiter.OrderService;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.web.bind.annotation.*;

importjavax.servlet.http.HttpServletRequest;importjava.util.List;/***@authorandyzheng*@title:WaiterDishesController*@projectNameordersys*@description:TODO*@date2021/4/1202:01*///@CrossOrigin("*")@RestController//@PreAuthorize("hasRole('3')")@RequestMapping("/waiter/dishes")publicclassWaiterDishesController{@AutowiredDishesServiceservice;

@AutowiredOrderServiceorderService;@AutowiredTokenServicetokenService;

@GetMapping("/getdishesbypage")publicPageResults<DishesInfo>list(Integerpage){//獲取最大頁碼數(shù)intmaxPage=service.getMaxPage(8);//對當(dāng)前的頁碼數(shù)進(jìn)行糾錯，如果小于1，則直接顯示第一頁的內(nèi)容page=page<1?1:page;//對當(dāng)前的頁碼數(shù)進(jìn)行糾錯，如果大于最大頁碼，則直接顯示最后一頁的內(nèi)容page=page>maxPage?maxPage:page;//進(jìn)行分頁數(shù)據(jù)查詢List<DishesInfo>list=service.getDishesInfoByPage(page,8);//嘗試將結(jié)果結(jié)構(gòu)化returnPageResults.success(list,page,maxPage);}@GetMapping("/getOrderList")publicPageResults<?>getOrderList(HttpServletRequestrequest){LoginUserloginUser=tokenService.getLoginUser(request);if(loginUser==null){returnPageResults.failure();}UserInfouser=loginUser.getUser();IntegerwaiterId=user.getUserId();returnPageResults.success(orderService.findOrderByWaiter(waiterId));}}(7)在“com.chinasofti.ordersys.api.waiter”包中，新建OrderService類，用于實現(xiàn)菜品購買及支付流程模塊服務(wù)。/***Copyright2015ChinaSoftInternationalLtd.Allrightsreserved.*/packagecom.chinasofti.ordersys.service.waiter;

importcom.chinasofti.ordersys.mapper.OrderDishesMapper;importcom.chinasofti.ordersys.mapper.OrderMapper;importcom.chinasofti.ordersys.model.*;importmons.lang3.math.NumberUtils;importorg.springframework.beans.BeanUtils;importorg.springframework.stereotype.Service;

importjava.util.ArrayList;importjava.util.Date;importjava.util.List;

?代碼如下：/***<p>*Title:DishesService*</p>*<p>*Description:菜品管理服務(wù)對象*</p>*<p>*Copyright:Copyright(c)2015*</p>*<p>*Company:ChinaSoftInternationalLtd.*</p>**@authoretc*@version1.0*/@ServicepublicclassOrderService{// @Autowired OrderMappermapper;

OrderDishesMapperorderDishesMapper;

publicOrderService(OrderMappermapper,OrderDishesMapperorderDishesMapper){ this.mapper=mapper; this.orderDishesMapper=orderDishesMapper; } /** * *@paramwaiterId *@return */ publicList<OrderVO>findOrderByWaiter(IntegerwaiterId){ List<OrderVO>resultList=newArrayList<>(); List<OrderDishesInfo>list=mapper.findOrderByWaiter(waiterId); if(list==null||list.size()==0){ returnresultList; } OrderVOorder=newOrderVO(); List<OrderDishesVO>orderDishesVOList=null; for(inti=0;i<list.size();i++){ OrderDishesInfoitem=list.get(i); OrderDishesVOorderDishes=newOrderDishesVO(); BeanUtils.copyProperties(item,orderDishes); if(item.getOrderId()==null|| order.getOrderId()==null|| NumberUpare(item.getOrderId(),order.getOrderId())!=0){ if(i!=0){ resultList.add(order); } order=newOrderVO(); BeanUtils.copyProperties(item,order); orderDishesVOList=newArrayList<>(); } orderDishesVOList.add(orderDishes); order.setOrderDishes(orderDishesVOList); } returnresultList; } publicOrderInfosaveOrder(intuserId){ intORDER_STATE=0; OrderInfoorderInfo=newOrderInfo(); orderInfo.setWaiterId(userId); orderInfo.setOrderBeginDate(newDate()); orderInfo.setOrderState(ORDER_STATE); orderInfo.setTableId(0); mapper.saveOrderInfo(orderInfo); returnorderInfo; }

publicvoidupdateState(intstate,intorderId){ mapper.updateOrderState(state,orderId); }

publicvoidsaveOrderDishes(intorderId,List<OrderDishesVO>orderDishes){ if(orderDishes!=null&&!orderDishes.isEmpty()){ OrderDishesorderDish=null; for(OrderDishesVOvo:orderDishes){ orderDish=newOrderDishes(); orderDish.setNum(vo.getNum()); orderDish.setOrderReference(orderId); orderDish.setDishes(vo.getDishesId()); orderDishesMapper.saveOrderDishes(orderDish); } } }}(8)在“com.chinasofti.ordersys.mapper”包中，新建OrderMapper類，用于實現(xiàn)訂單模塊持久層。?代碼如下：packagecom.chinasofti.ordersys.mapper;

importcom.chinasofti.ordersys.model.OrderDishesInfo;importcom.chinasofti.ordersys.model.OrderInfo;importorg.apache.ibatis.annotations.*;

importjava.util.List;@MapperpublicinterfaceOrderMapper{ @Select("selecto.orderId,o.orderBeginDate,o.orderState,d.dishesId,d.dishesName,o2.num,d.dishesPrice"+ "fromorderdisheso2"+ "leftjoinorderinfooono.orderId=o2.orderReference"+ "leftjoindishesinfodond.dishesId=o2.dishes"+ "wherenotisnull(o.orderId)"+ "ando.waiterId=#{waiterId}"+ "orderbyo.orderBeginDatedesc" ) publicList<OrderDishesInfo>findOrderByWaiter(@Param("waiterId")IntegerwaiterId);

@Insert("insertintoorderinfo(orderBeginDate,orderEndDate,waiterId,orderState,tableId)"+ "values(#{info.orderBeginDate},#{info.orderEndDate},#{info.waiterId},#{info.orderState},#{info.tableId})") @Options(useGeneratedKeys=true,keyProperty="info.orderId") publicIntegersaveOrderInfo(@Param("info")OrderInfoorderInfo); @Update("updateorderinfosetorderState=#{orderState}whereorderId=#{orderId}") publicIntegerupdateOrderState(@Param("orderState")Integerstate,@Param("orderId")IntegerorderId);}(9)在“com.chinasofti.ordersys.mapper”包中，新建OrderDishesMapper類，用于實現(xiàn)訂單與訂單菜品關(guān)聯(lián)持久層。?代碼如下：packagecom.chinasofti.ordersys.mapper;

importcom.chinasofti.ordersys.model.OrderDishes;importcom.chinasofti.ordersys.model.OrderDishesInfo;importorg.apache.ibatis.annotations.*;

importjava.util.List;

@MapperpublicinterfaceOrderDishesMapper{

@Insert("insertintoorderdishes(orderReference,dishes,num)"+"values(#{info.orderReference},#{info.dishes},#{info.num})" ) @Options(useGeneratedKeys=true,keyProperty="info.odid") publicIntegersaveOrderDishes(@Param("info")OrderDishesorderDishes);}步驟2：實現(xiàn)點餐主頁(1)在“src\api”包中，新建waiter-api.js，用于實現(xiàn)點餐模塊API接口。(2)在“src\views\shop\”包中，新建shop.vue，用于實現(xiàn)點餐主頁。(3)把上述views的視圖組件配置到路由src\router\index.js。注意：上述代碼請參考提供的項目order-sys-front，此處省略。步驟3：實現(xiàn)訂單管理模塊前端(1)在“src\views\order\”包中，新建order.vue，用于