BS1049-基于SpringSSM开发实现互联网电商平台及后台系统

 * 根据商品id查询商品信息
 * @param goodIds
 * @return
 */
@Override
public List<Goods> getGoods(Integer[] goodIds) {
    List<Goods> goodsList = settleMapper.getGoods(goodIds);

    return goodsList;

}

/**

 * 1.判断库存是否充足
 * 2.true:生成新订单  false:回滚
 * 3.插入订单和用户的收货地址
 * 4.删除购物车里的数据
 *
 * @param goodsInfos
 * @param defaultTakeDeliveryAddressId
 * @param userId
 * @return
 */
@Override
public Results confirmOrder(Map<Integer, Integer> goodsInfos, Integer defaultTakeDeliveryAddressId, Integer userId) {

    Results result = null;

    // 获取所有的商品id

    Set<Integer> goodIds = goodsInfos.keySet();

    // 将所有的商品id存入数组中

    Integer[] ids = goodIds.toArray(new Integer[goodIds.size()]);

    //通过商品id获取商品信息

    List<Goods> goodsList =settleMapper.getGoods(ids);

    // 确认订单后获取总价格

    BigDecimal totalPrice = BigDecimal.valueOf(0);

    // 返回数据

    Map<String,Object> resultData = new HashMap<>();

    // 判断库存，生成新订单

    for (Integer goodId : goodIds) {

        // 查看该商品的库存余量

        int stockNum = settleMapper.checkStock(goodId);

        // 查看用户购买该商品的数量

        Integer buyNum = goodsInfos.get(goodId);

        // 若供不应求，自动回滚

        if (buyNum > stockNum){

            result  = new Results(-1, "库存不足");

            return result;

        }else { // 若库存充足，减少相应商品的库存量，购买成功

            settleMapper.updateStockNum(stockNum - buyNum,goodId);

        }

    }

    // // 库存充足，生成支付成功订单

    String orderNo = newOrderNo();

    // 将新订单编号放入结果集中

    resultData.put("orderNo", orderNo);

    // 遍历该商品的所有相关信息，作为新订单数据存入数据库中

    for (Goods goods : goodsList) {

        Integer goodsId = goods.getGoodsId();

        BigDecimal price = goods.getPrice();

        String title = goods.getTitle();

        String smallPic = goods.getSmallPic();

        System.out.println("图片完整路径：" + smallPic);

        // 获取该商品的购买数量

        Integer buyCount = goodsInfos.get(goodsId);

        // 将上述信息插入到订单中

        QueryUser queryUser = new QueryUser(orderNo,price,buyCount,0,0,userId,new Date(),

                goodsId,smallPic,title);

        settleMapper.insertOrder(queryUser);

        // 计算该商品的总价格

        totalPrice = totalPrice.add(price.multiply(BigDecimal.valueOf(buyCount)));

    }

    // 插入订单的收货地址

    settleMapper.insertOrderAddress(orderNo, defaultTakeDeliveryAddressId);

    // 删除该用户购物车的数据

    settleMapper.deleteShoppingCart(userId);

    result  = new Results(1, "确认订单完成");

    resultData.put("totalPrice",totalPrice);

    result.setObject(resultData);

    return result;

}

/**

 * 点击取消支付按钮
 * @param orderNo
 * @return
 */
@Override
public Results cancelOrder(String orderNo) {
    try {
        settleMapper.cancelOrder(orderNo);
        return new Results(1,"取消订单");
    }catch (Exception e){
        e.printStackTrace();
    }
    return new Results(-1,"取消失败");
}

/**

 * 支付成功，修改订单状态
 * @param o_no
 */
@Override
public void successPay(Date nowDate,String o_no) {
    settleMapper.successPay(nowDate,o_no);
}

// 支付成功后，生成流水

@Override

public void insertCount(String out_trade_no,Date nowDate, String total_amount,String type) {

    settleMapper.insertCount(out_trade_no,total_amount,new Date(),type);

}

// 支付过程中查询支付状态

@Override

public Integer[] status(String orderNo) {

    Integer[] status = settleMapper.status(orderNo);

    return status;

}

// 支付遇到问题，将支付状态设为 未支付 状态

public Results problemStatus(String orderNo){

    Results results = new Results();

    try {

        settleMapper.problemStatus(orderNo);

        results.setCode(1);

        results.setMsg("success");

        return results;

    }catch (Exception e){

        e.printStackTrace();

        results.setCode(-1);

        results.setMsg("fail");

        return results;

    }

}

// 生成订单编号

public String newOrderNo() {

    Date date = new Date();

    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");

    String dateNo = sdf.format(date);

    return dateNo;

}