公众号搭建淘宝、京东、拼多多查券平台

双十一之前终于把淘宝客公众号搭建好了，虽然耗时不少，但还是蛮有成就感的，能不能赚钱就另外一回事了。

我这里用到了淘宝联盟api权限、拼多多平台接口api、京东申请比较麻烦就没有申请，所以京东使用了第三方免费接口，各联盟账号api权限申请我就不赘述了。

效果：

淘宝找券实现

原理：

1. 通过用户手淘分享的商品信息，信息中包含商品关键字和链接，使用商品关键字通过淘宝 通用物料搜索API 接口查询一批商品；
2. 然后通过分享信息中的淘宝链接http抓包方式获取淘宝商品item id;
3. 然后通过item id在查询的一批商品中找到指定的商品优惠券、佣金等信息。

public static string GetTaobaoCoupon(RequestMessageText responseMessageText)
        {
            string itemInfo = responseMessageText.Content.Trim();

            string responeMessage = "";
            try
            {
                Match m_title = Regex.Match(itemInfo, @"【.*】");
                string temp = m_title.Value;
                if (!string.IsNullOrEmpty(temp))
                {
                    temp = temp.Substring(1, temp.Length - 2);
                }
                else
                {
                    return "";
                }

                if (temp.Contains("#手聚App"))
                {
                    int IndexofA = temp.IndexOf("宝贝不错:");
                    int IndexofB = temp.IndexOf("(分享自");
                    temp = temp.Substring(IndexofA + 5, IndexofB - IndexofA - 5);
                }

                string title = temp;

                //通过商品关键字查询商品
                ITopClient client = new DefaultTopClient(taobaoApiUrl,taobaoAppkey, taobaoSecret);
                TbkDgMaterialOptionalRequest req = new TbkDgMaterialOptionalRequest();
                req.AdzoneId = addzoneId;
                req.Platform = 2L;
                
                req.PageSize = 100L;
                req.Q = title;
           
                req.PageNo = 1L;
                TbkDgMaterialOptionalResponse rsp = client.Execute(req);

                if (rsp.ResultList.Count > 0)
                {
                    //获取淘宝短链接
                    Match m_url = Regex.Match(itemInfo, @"htt(p|ps)://([w-]+(.[w-]+)*/)*[w-]+(.[w-]+)*/?(?([w-.,@?^=%&:/~+#]*)+)?");

                    if (m_url.Value == "")
                    {
                        return responeMessage;
                    }
                    var s = HttpUtility.HttpGet(m_url.Value, "", "utf-8");

                    //Match am_url = Regex.Match(s, @"(?<=var url = ')(.*)(?=')");
                    //获取宝贝item id
                    Match m_item = Regex.Match(s, @"(?<=m.taobao.com/i)([0-9]*)");
                    string item_id = m_item.Value;

                    if (string.IsNullOrEmpty(item_id))
                    {
                        Match am_url = Regex.Match(s, @"(?<=var url = ')(.*)(?=')");
                        var htmlContent = HttpUtility.HttpGet(am_url.Value, "", "gbk");
                        Match re_m_item = Regex.Match(htmlContent, @"(?<=taobao.com/item.htm?id=)([0-9]*)");
                        item_id = re_m_item.Value;
                    }

                    if (string.IsNullOrEmpty(item_id))
                    {
                        //LogHelper.WriteLog(typeof(WechatController), "通过抓包方式未获取到宝贝item id");
                        var g = rsp.ResultList.Where(y => !string.IsNullOrEmpty(y.CouponId)).OrderByDescending(w => w.Volume).FirstOrDefault();
                        if (g == null)
                        {
                            responeMessage = ConfigurationManager.AppSettings["tbk_nocoupon_msg"].Replace("\n", "
").Replace("\ue231", "ue231");

                        }
                        else
                        {
                            var hongbao = (decimal.Parse(g.ZkFinalPrice) - decimal.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value)) * decimal.Parse(g.CommissionRate) / 10000 * commission_rate;
                            
                            responeMessage = $"{g.Title}
【在售价】{g.ZkFinalPrice}元
【巻后价】{Math.Round(double.Parse(g.ZkFinalPrice) - double.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value), 2)} 元
复制这条信息，打开「手机绹宝」领巻下单{GetTaobaoKePassword(g.CouponShareUrl, g.PictUrl + "_400x400.jpg")}
";

                        }
                        return responeMessage;

                    }
                    else
                    {
                        float numid = 0;
                        try
                        {
                            numid = float.Parse(item_id);
                        }
                        catch (Exception ex)
                        {

                          //通过淘宝链接没有获取到item id,显示销量最高商品
                            var g = rsp.ResultList.Where(y => !string.IsNullOrEmpty(y.CouponId)).OrderByDescending(y => y.Volume).FirstOrDefault();

                            var hongbao = (decimal.Parse(g.ZkFinalPrice) - decimal.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value)) * decimal.Parse(g.CommissionRate) / 10000 * commission_rate;
                            responeMessage = $"{g.Title}
【在售价】{g.ZkFinalPrice}元
【巻后价】{Math.Round(double.Parse(g.ZkFinalPrice) - double.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value), 2)} 元
复制这条信息，打开「手机绹宝」领巻下单{GetTaobaoKePassword(g.CouponShareUrl, g.PictUrl + "_400x400.jpg")}
";

                            return responeMessage;

                        }

                        //在接口返回的商品中找查询的商品
                        foreach (var g in rsp.ResultList)
                        {
                            if (g.NumIid == numid)
                            {
                                if (string.IsNullOrEmpty(g.CouponInfo))
                                {
                                    var hongbao = decimal.Parse(g.ZkFinalPrice) * decimal.Parse(g.CommissionRate) / 10000 * commission_rate;

                                    responeMessage = $"{g.Title}
【在售价】{g.ZkFinalPrice}元
【约返利】{Math.Round(hongbao, 2)}元
复制这条信息，打开「手机绹宝」领巻下单{GetTaobaoKePassword(g.Url, g.PictUrl + "_400x400.jpg")}
==========================
下单确认收货后就能收到返利佣金啦~
 点击查看  <a href='http://mp.weixin.qq.com/s?__biz=Mzg2NTAxOTEyMA==&mid=100000146&idx=1&sn=62405c8df3db46e74940aefb9ac3737b&chksm=4e61340d7916bd1bf645afbc6d10c1f19561d7fa59847516c01e64c0791e6d544f4f56c4f498#rd'>如何领取返利</a>";
                                    return responeMessage;
                                }
                                else
                                {
                                    var hongbao = (decimal.Parse(g.ZkFinalPrice) - decimal.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value)) * decimal.Parse(g.CommissionRate) / 10000 * commission_rate;
                                    responeMessage = $"{g.Title}
【在售价】{g.ZkFinalPrice}元
【巻后价】{Math.Round(double.Parse(g.ZkFinalPrice) - double.Parse(Regex.Match(g.CouponInfo, "减" + @"(d+)").Groups[1].Value), 2)} 元
复制这条信息，打开「手机绹宝」领巻下单{GetTaobaoKePassword(g.CouponShareUrl, g.PictUrl + "_400x400.jpg")}
";
                                    return responeMessage;
                                }
                            }
                        }

                        //没有找到，有相似宝贝推荐
                        var w = rsp.ResultList.Where(y => !string.IsNullOrEmpty(y.CouponId)).OrderByDescending(y => y.Volume).FirstOrDefault();

                        if (w == null)
                        {
                            responeMessage = ConfigurationManager.AppSettings["tbk_nocoupon_msg"].Replace("\n", "
").Replace("\ue231", "ue231");
                        }
                        else
                        {
                            var hongbao = (decimal.Parse(w.ZkFinalPrice) - decimal.Parse(Regex.Match(w.CouponInfo, "减" + @"(d+)").Groups[1].Value)) * decimal.Parse(w.CommissionRate) / 10000 * commission_rate;

                            responeMessage = $"/:rose 亲，这款商品的优惠返利活动结束了~
已为你推荐以下宝贝。
==========================
{w.Title}
【在售价】{w.ZkFinalPrice}元
【巻后价】{Math.Round(double.Parse(w.ZkFinalPrice) - double.Parse(Regex.Match(w.CouponInfo, "减" + @"(d+)").Groups[1].Value), 2)} 元
复制这条信息，打开「手机绹宝」领巻下单{GetTaobaoKePassword(w.CouponShareUrl, w.PictUrl + "_400x400.jpg")}
";
                        }

                        return responeMessage;

                    }


                }
                else
                {
                    responeMessage = ConfigurationManager.AppSettings["tbk_nocoupon_msg"].Replace("\n", "
").Replace("\ue231", "ue231");

                }

            }
            catch (Exception ex)
            {
                //LogHelper.WriteLog(typeof(WechatController), "返回消息异常" + ex.Message);

            }

            return responeMessage;

        }

京东、拼多多找券

京东、拼多多找券都比较简单，微信支持京东、拼多多链接，可以通过链接获取到商品id，然后直接通过接口使用商品id找券。
京东代码：使用了第三方接口（好京客）

 public static string GetJDCoupon(RequestMessageText requestMessageText)
        {
           
            string msg = requestMessageText.Content;
            Match m_goods = Regex.Match(msg, @"(?<=product/)([0-9]*)|(?<=sku=)([0-9]*)");

            string skuId = m_goods.Value;

            if (string.IsNullOrEmpty(skuId))
            {
               // LogHelper.WriteLog(typeof(WechatController), "获取京东skuid失败" + msg);
                return "";
            }

            try
            {
                var hjkGoodsDetail = hjkApi.GetJDGoodsDetail(skuId);

                if (hjkGoodsDetail.StatusCode == 200 && hjkGoodsDetail.Data != null && !string.IsNullOrEmpty(hjkGoodsDetail.Data.CouponList))
                {
                    var model = hjkApi.GetUnionUrl(skuId, hjkGoodsDetail.Data.CouponList);
                    if (model != null && model.StatusCode == 200 && !string.IsNullOrEmpty(model.Data))
                    {
                        return $"{hjkGoodsDetail.Data.SkuName}
【在售价】{hjkGoodsDetail.Data.WlPrice}元
【巻后价】{hjkGoodsDetail.Data.WlPriceAfter} 元

ue231 <a href='{model.Data}'>点击这里领券下单</a>

";
                    }
                    else
                    {
                        return ConfigurationManager.AppSettings["jd_nocoupon_msg"].Replace("\n", "
").Replace("\ue231", "ue231");
                    }

                }
                else
                {
                    return ConfigurationManager.AppSettings["jd_nocoupon_msg"].Replace("\n", "
").Replace("\ue231", "ue231");
                }
            }
            catch (Exception ex)
            {
                //LogHelper.WriteLog(typeof(WechatController), "获取京东skuid失败" + ex.Message);
                return "";
            }
        }

拼多多代码如下：

 public static async Task<string> GetPDDCouponAsync(RequestMessageText responseMessageText)
        {
            PddCommonApi.ClientId = "d8172a66ddf14220beac58e8eddca0d9";
            PddCommonApi.ClientSecret = "d5993ce16cc0d1bd35403176f35544962e786645";
            PddCommonApi.RedirectUri = "RedirectUri";
            PddCommonApi.AccessToken = "";

            string msg = responseMessageText.Content;
            Match m_goods = Regex.Match(msg, @"(?<=goods_id=)([0-9]*)");

            string goods_id = m_goods.Value;

            if (string.IsNullOrEmpty(goods_id))
            {
                //LogHelper.WriteLog(typeof(WechatController), "获取拼多多goods id失败" + msg);
                return "";
            }

            DdkApi api = new DdkApi();

            var model = new DetailDdkGoodsRequestModel()
            {
                Type = "pdd.ddk.goods.detail",
                GoodsIdList = $"[{goods_id}]"
            };
            DetailDdkGoodsResponseModel result = null;
            try
            {
                result = await api.DetailDdkGoodsAsync(model);
            }
            catch (Exception ex)
            {
                //LogHelper.WriteLog(typeof(WechatController), "调用拼多多获取商品详细信息失败" + ex.Message);
                return "";
            }


            var goods = result.GoodsDetailResponse.GoodsDetails.FirstOrDefault();

            if (goods == null) //无优惠券 无佣金
            {
                return "/:rose 亲，这款商品的优惠返利活动结束了~
请换个商品试试吧。
========================
ue231    <a href='https://mobile.yangkeduo.com/duo_cms_mall.html?pid=2495191_31302208cpsSign=CM2495191_31302208_3a1c1a0431608b9c1eb417183d57c1bdduoduo_type=2'>拼多多优惠券商城</a>
下单确认收货后就能收到返利佣金啦~";
            }
            else if (goods.HasCoupon) //有优惠券 有佣金
            {
                try
                {
                    var promotionUrlModel = await api.GenerateDdkGoodsPromotionUrlAsync(new GenerateDdkGoodsPromotionUrlRequestModel
                    {
                        Type = "pdd.ddk.goods.promotion.url.generate",
                        PId = pdd_pid,
                        GoodsIdList = $"[{goods_id}]",
                        GenerateShortUrl = true,
                        CustomParameters = responseMessageText.FromUserName
                    });


                    return $"/:rose 亲，商品信息如下~
========================
{goods.GoodsName}
【在售价】{((decimal)goods.MinGroupPrice) / 100}元
【券后价】{Math.Round(((decimal)(goods.MinGroupPrice - goods.CouponDiscount.Value)) / 100, 2)}元
ue231 <a href='{promotionUrlModel.GoodsPromotionUrlGenerateResponse.GoodsPromotionUrlList.FirstOrDefault().Url}'>点击这里下单</a>
下单确认收货后就能收到返利佣金啦~";

                    //return $"/:rose 亲，商品信息如下~
========================
{goods.GoodsName}
【在售价】{((decimal)goods.MinGroupPrice) / 100}元
【券后价】{Math.Round(((decimal)(goods.MinGroupPrice - goods.CouponDiscount.Value)) / 100,2)}元
【约返利】{Math.Round((decimal)((goods.MinNormalPrice - goods.CouponDiscount.Value) * goods.PromotionRate) / 100000,2)}元
ue231 <a href='{promotionUrlModel.GoodsPromotionUrlGenerateResponse.GoodsPromotionUrlList.FirstOrDefault().Url}'>点击这里下单</a>
下单确认收货后就能收到返利佣金啦~";

                }
                catch (Exception ex)
                {
                    //LogHelper.WriteLog(typeof(WechatController), "调用拼多多获取推广链接失败" + ex.Message);
                    return "";
                }
            }
            else //无优惠券 但有佣金
            {
                try
                {
                    var promotionUrlModel = await api.GenerateDdkGoodsPromotionUrlAsync(new GenerateDdkGoodsPromotionUrlRequestModel
                    {
                        Type = "pdd.ddk.goods.promotion.url.generate",
                        GoodsIdList = $"[{goods_id}]",
                        PId = pdd_pid,
                        GenerateShortUrl = true,
                        CustomParameters = responseMessageText.FromUserName
                    });


                    return $"/:rose 亲，商品信息如下~
========================
{goods.GoodsName}
【在售价】{((decimal)goods.MinGroupPrice) / 100}元
【约返利】{Math.Round((decimal)(goods.MinGroupPrice * goods.PromotionRate) / 100000, 2)}元
ue231 <a href='{promotionUrlModel.GoodsPromotionUrlGenerateResponse.GoodsPromotionUrlList.FirstOrDefault().Url}'>点击这里下单</a>
下单确认收货后就能收到返利佣金啦~

 点击查看  <a href='http://mp.weixin.qq.com/s?__biz=Mzg2NTAxOTEyMA==&mid=100000146&idx=1&sn=62405c8df3db46e74940aefb9ac3737b&chksm=4e61340d7916bd1bf645afbc6d10c1f19561d7fa59847516c01e64c0791e6d544f4f56c4f498#rd'>如何领取返利</a>";
                }
                catch (Exception ex)
                {
                    //LogHelper.WriteLog(typeof(WechatController), "调用拼多多获取推广链接失败" + ex.Message);
                    return "";
                }

            }
            
        }

详细请查看 http://blog.yshizi.cn/5.html
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