购物车整理

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@RequestMapping(value = "/shopper")
public String shopperIndex(HttpServletRequest request, Model model, boolean isClient) throws BusinessException
{
    String dealerId = super.getDealerParentRefrenceId(request);
    List<DealerShoper> dealerShoperList  = dealerShoperService.getAllDealerShopersBy(dealerId);
    // 购物车记录 不存在时
    if (dealerShoperList == null || dealerShoperList.isEmpty()) { return isClient ? "dealer/shopper_index_erp_v2" : "dealer/shopper_index_v2"; }
    //sku属性装入实体
    for(DealerShoper dealerShoper : dealerShoperList)
    {
        List<DealerShopers> dealerShopersList = dealerShopersService.getEntityByProductId(dealerShoper.getProductId());
        dealerShoper.setDealerShopersList(dealerShopersList);
    }
    //封装数据
    Map<String,ShopersModel> shoperModelMap = transDealerShopperToShoperModelList(dealerShoperList);
    List<ShopersModel>  shopersModelList = Lists.newArrayList();
    for(ShopersModel shoperModel : shoperModelMap.values() )
    {
        shopersModelList.add(shoperModel);
    }
    model.addAttribute("shopersModelList",shopersModelList);
    return isClient ? "dealer/shopper_index_erp_v2" : "dealer/shopper_index_v2";
}


public Map<String,ShopersModel> transDealerShopperToShoperModelList(List<DealerShoper> dealerShoperList) {
    Integer purchaseNumAllSum = 0;
    BigDecimal purchasePriceAllSum = BigDecimal.ZERO;
    Map<String,ShopersModel> shoperModelMap=Maps.newHashMap();
    for(DealerShoper item : dealerShoperList)
    {
        String brandesId = item.getBrandsId();
        if(shoperModelMap.get(brandesId) == null)
        {
            ShopersModel shopersModel = new ShopersModel();
            shopersModel.setBrandId(item.getBrandId());
            shopersModel.setBrandName(item.getBrandName());
            shopersModel.setBrandesId(item.getBrandsId());
            shopersModel.setBrandesName(item.getBrandsName());
            shopersModel.getDealerShoperList().add(item);
            shoperModelMap.put(brandesId,shopersModel);
        }else{
            ShopersModel shopersModel = shoperModelMap.get(brandesId);
            shopersModel.getDealerShoperList().add(item);
        }
        if(item.getPurchaseNumSum() != null && item.getPurchaseNumSum() > 0)
        {
            ShopersModel shopersModel = shoperModelMap.get(brandesId);
            shopersModel.setPurchasePriceAllSum(shopersModel.getPurchasePriceAllSum().add(item.getPurchasePriceSum()));
            shopersModel.setPurchaseNumAllSum(shopersModel.getPurchaseNumAllSum()+item.getPurchaseNumSum());
        }
    }
    return shoperModelMap;
}

private void countDealerOrdersToDealerOrder(DealerShoper dealerShoper, List<DealerShopers> dealerShopersList) {
    //按产品id分类,购买该产品下的所有sku数量总和,对应shopper_balace_v2.jsp中的数量小计
    Integer purchaseNum_byProduct = 0;
    //按产品id分类,购买该产品下所有的sku数量总和的总价格,对应shopper_balace_v2.jsp中的金额小计
    BigDecimal purchasePrice_byProduct = BigDecimal.ZERO;
    for(int i = 0 ; i < dealerShopersList.size() ; i++)
    {
        DealerShopers  item = dealerShopersList.get(i);
        if(item.getPurchaseNum() == null || item.getPurchaseNum().equals(0))
        {
            dealerShopersList.remove(i);   //去除后,list长度变了,所以需要相应的改变 i 的值
            i--;
        }
    }
    for(DealerShopers item : dealerShopersList)
    {
        purchaseNum_byProduct = purchaseNum_byProduct + item.getPurchaseNum();
        purchasePrice_byProduct = purchasePrice_byProduct.add(dealerShoper.getProductPrice().multiply(new BigDecimal(item.getPurchaseNum())));
    }
    dealerShoper.setPurchaseNumSum(purchaseNum_byProduct);
    dealerShoper.setPurchasePriceSum(purchasePrice_byProduct);
    dealerShoper.setDealerShopersList(dealerShopersList);
}

购物车整理

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原文地址：http://www.cnblogs.com/yiyongyao/p/4550194.html