标签:ror 怎么 his 数据库设计 creat 多少 删除 inf code
说明:任何一个电商无论是B2C还是B2B都有一个购物车模块,其中最重要的原因就是客户需要的东西放在一起,形成一个购物清单,确认是否有问题,然后再进行下单与付款.
1. 购物车数据库设计:
说明:业务需求:
1》购物车里面应该存放,那个买家,买了那个菜品的什么规格,有多少数量,然后这个菜品的加工方式如何。(如果存在加工方式的话,就会在这里显示处理。)
2》买家存在购物起送价。也就是用户放入购物车的商品的总价格如果低于配置的起送价,那么这个提交按钮就是灰色的。(不可能你点一个洋葱我们就送过去,成本太高。)
系统设计:
1. 购物车在买家APP上进行,这个时候是不需要跟后端API交互的,因为体验很差劲,用户在APP页面中不停的点击加菜以及菜的数量,如果根据后端进行交互,哪怕是每次请求是100ms,页面会存在很严重的抖动行为,速度快的话会出现卡顿,这个是不行的。
2. 在用户确定完成后,确认下单的时候,提交购物车,让后端可以存储用户购物车的数据。(确认下单过程)
3. 在用户去付款的时候,也就是提交了订单。这个时候再清理购物车。
相关后端代码如下:
/** * 购物车 */ @RestController @RequestMapping("/buyer/goodsCart") public class GoodsCartController extends BaseController{ private static final Logger logger = LoggerFactory.getLogger(GoodsCartController.class); @Autowired private GoodsCartService goodsCartService; @Autowired private GoodsFormatService goodsFormatService; /** * 生成购物车; * 1:先删除历史购物车; * 2:新增购物车数据; */ @RequestMapping(value="/commitCart",method={RequestMethod.GET,RequestMethod.POST}) public JsonResult commitCar(HttpServletRequest request, HttpServletResponse response,@RequestBody GoodsListVo goodsListVo) { try { List<GoodsCart> list = goodsListVo.getList(); if(null == goodsListVo.getUserId() || null == list){ return new JsonResult(JsonResultCode.FAILURE, "请求参数异常", ""); } for (int i = 0; i < list.size(); i++) { if(null ==list.get(i).getBuyerId() || null == list.get(i).getFormatId()){ return new JsonResult(JsonResultCode.FAILURE, "请求参数异常", ""); } } int result = goodsCartService.commitCart(list,goodsListVo.getUserId()); //更新购物车为空 则直接返回; if(list.size()<1){ return new JsonResult(JsonResultCode.SUCCESS, "更新成功", new ArrayList<>()); } Long buyerId = list.get(0).getBuyerId(); List<GoodsCartVo> goodsCartBuyers = goodsCartService.getGoodsCartBuyerId(buyerId); if (result == list.size()) { return new JsonResult(JsonResultCode.SUCCESS, "新增成功", goodsCartBuyers); } return new JsonResult(JsonResultCode.SUCCESS, "有下架商品", goodsCartBuyers); }catch(Exception e){ logger.error("[GoodsCartController][commitCart]",e); return new JsonResult(JsonResultCode.FAILURE, "系统错误,请稍后重试",""); } } /** * 对单个数据进行修改 新增 删除; * @param request * @param response * @param goodsCart * @return */ @RequestMapping(value="/updateCart",method={RequestMethod.GET,RequestMethod.POST}) public JsonResult updateCart(HttpServletRequest request, HttpServletResponse response,@RequestBody GoodsCart goodsCart) { try { BigDecimal goodsNumber=goodsCart.getGoodsNumber(); Long formartId=goodsCart.getFormatId(); BigDecimal count = goodsFormatService.getGoodsFormatById(formartId).getFormatPrice().multiply(goodsNumber); goodsCart.setCreateTime(new Date()); int result = goodsCartService.updateGoodsCart(goodsCart); if (result > 0) { return new JsonResult(JsonResultCode.SUCCESS, "操作成功", count); } return new JsonResult(JsonResultCode.FAILURE, "操作失败", count); }catch(Exception e){ logger.error("[GoodsCartController][updateCart]",e); return new JsonResult(JsonResultCode.FAILURE, "系统错误,请稍后重试",""); } } /** * * @param request * @param response * @param goodsCart * @return */ @RequestMapping(value="/insertCart",method={RequestMethod.GET,RequestMethod.POST}) public JsonResult insertCart(HttpServletRequest request, HttpServletResponse response,@RequestBody GoodsCart goodsCart) { try { BigDecimal goodsNumber=goodsCart.getGoodsNumber(); Long formartId=goodsCart.getFormatId(); BigDecimal count = goodsFormatService.getGoodsFormatById(formartId).getFormatPrice().multiply(goodsNumber); goodsCart.setCreateTime(new Date()); int result = goodsCartService.insertGoodsCart(goodsCart); if (result > 0) { return new JsonResult(JsonResultCode.SUCCESS, "操作成功", count); } return new JsonResult(JsonResultCode.FAILURE, "操作失败", count); }catch(Exception e){ logger.error("[GoodsCartController][insertCart]",e); return new JsonResult(JsonResultCode.FAILURE, "系统错误,请稍后重试",""); } } /** * 根据cartId 删除单个购物车项; * @param request * @param response * @param cartId * @return */ @RequestMapping(value="/deleteCart",method={RequestMethod.GET,RequestMethod.POST}) public JsonResult deleteCar(HttpServletRequest request, HttpServletResponse response, Long cartId) { try { if(null == cartId){ return new JsonResult(JsonResultCode.FAILURE, "请求参数异常", ""); } int result = goodsCartService.deleteGoodsCart(cartId); if (result > 0) { return new JsonResult(JsonResultCode.SUCCESS, "删除成功", ""); } else { return new JsonResult(JsonResultCode.FAILURE, "数据已不存在", ""); } }catch(Exception e){ logger.error("[GoodsCartController][deleteCart]",e); return new JsonResult(JsonResultCode.FAILURE, "系统错误,请稍后重试",""); } } @RequestMapping(value="/showCart",method={RequestMethod.GET,RequestMethod.POST}) public JsonResult showCart(HttpServletRequest request, HttpServletResponse response,@RequestBody GoodsListVo goodsListVo) { try { List<GoodsCart> list = goodsListVo.getList(); Long buyerId = goodsListVo.getUserId(); Long sellerId = goodsListVo.getSellerId(); if(null == buyerId ||null == sellerId){ return new JsonResult(JsonResultCode.FAILURE, "请求参数异常", ""); } goodsCartService.commitCartByBuyerIdSellerId(list,buyerId, sellerId); List<ProductVo> productVos = goodsCartService.getGoodsCartListBySellerId(buyerId, sellerId); return new JsonResult(JsonResultCode.SUCCESS, "查询成功", productVos); }catch(Exception e){ logger.error("[GoodsCartController][showCart]",e); return new JsonResult(JsonResultCode.FAILURE, "系统错误,请稍后重试",""); } } }
基本业务功能:
1.购物车可以清空。
2. 购物车可以提交。
3. 购物车可以更新。
4. 购物车也可以查询。
补充说明:那么APP端提交给后端的API的对象应该是怎么样的呢?
以下贴出代码与讲解:
public class GoodsCart implements Serializable{ private static final long serialVersionUID = 7078019879911908296L; /** * */ private Long cartId; /** * 买家ID */ private Long buyerId; /** * 商品规格id */ private Long formatId; /** * 所属卖家ID */ private Long sellerId; /** * 店铺名称 */ private String sellerName; /** * 商品数量 */ private BigDecimal goodsNumber; /** * 加工方式ID */ private Long methodId; /** * 是否选择 (1是 -1否) */ private Integer isSelected; /** * 创建时间 */ private Date createTime; /** * 查询创建时间 */ private String queryTime; /** * 买家 */ private Buyer buyer; /** * 卖家 */ private Seller seller; /** *sku */ private GoodsFormat goodsFormat; /** * 加工方式 */ private ProcessMethod processMethod; public String getSellerName() { return sellerName; } public void setSellerName(String sellerName) { this.sellerName = sellerName; } public Long getCartId() { return cartId; } public void setCartId(Long cartId) { this.cartId = cartId; } public Long getBuyerId() { return buyerId; } public void setBuyerId(Long buyerId) { this.buyerId = buyerId; } public Long getFormatId() { return formatId; } public void setFormatId(Long formatId) { this.formatId = formatId; } public Long getSellerId() { return sellerId; } public void setSellerId(Long sellerId) { this.sellerId = sellerId; } public BigDecimal getGoodsNumber() { return goodsNumber; } public void setGoodsNumber(BigDecimal goodsNumber) { this.goodsNumber = goodsNumber; } public Date getCreateTime() { return createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } public Buyer getBuyer() { return buyer; } public void setBuyer(Buyer buyer) { this.buyer = buyer; } public Seller getSeller() { return seller; } public void setSeller(Seller seller) { this.seller = seller; } public GoodsFormat getGoodsFormat() { return goodsFormat; } public void setGoodsFormat(GoodsFormat goodsFormat) { this.goodsFormat = goodsFormat; } public String getQueryTime() { return queryTime; } public void setQueryTime(String queryTime) { this.queryTime = queryTime; } public Long getMethodId() { return methodId; } public void setMethodId(Long methodId) { this.methodId = methodId; } public Integer getIsSelected() { return isSelected; } public void setIsSelected(Integer isSelected) { this.isSelected = isSelected; } public ProcessMethod getProcessMethod() { return processMethod; } public void setProcessMethod(ProcessMethod processMethod) { this.processMethod = processMethod; }
讲解:
1.这个菜品的规格,以及所属卖家,买家,包括是否需要加工等等。(比如买家买了鱼,这个鱼到底是需要怎么样处理呢?活鱼,肚杀,背杀),特别说明:这个跟实际的业
务有关,如果不是做生鲜这块的话,可能很难体会。
2. 买家肯定会买多个菜品,而不是一个,所以需要有一个List<GoodsCart> list;
相关实际代码如下:
public class GoodsListVo implements Serializable{ /** * */ private static final long serialVersionUID = -2024011567608945523L; private List<GoodsCart> list; private Long userId; private Long sellerId; public List<GoodsCart> getList() { return list; } public void setList(List<GoodsCart> list) { this.list = list; } public Long getUserId() { return userId; } public void setUserId(Long userId) { this.userId = userId; } public Long getSellerId() { return sellerId; } public void setSellerId(Long sellerId) { this.sellerId = sellerId; } }
Java开源生鲜电商平台-购物车模块的设计与架构(源码可下载),如果需要下载的话,可以在我的github下面进行下载。
相关的运营截图如下:
转载自-- https://www.cnblogs.com/jurendage/p/9039195.html
标签:ror 怎么 his 数据库设计 creat 多少 删除 inf code
原文地址:https://www.cnblogs.com/lu-manman/p/10047881.html