本篇开始正式做功能,我在开发拼团提醒之前,拼多多并没有放出拼团人数不足就提醒卖家的功能。
有这个想法主要来源于朋友的抱怨,我想这应该是大部分卖家的心声吧。
经过分析,拿到了几个api,不要问我api怎么拿到的,这不是本系列的内容。
接口1:http://apiv4.yangkeduo.com/mall/{0}/info?pdduid=0(传入店铺编号,可以获取店铺资料)
接口2:http://apiv4.yangkeduo.com/v2/mall/{0}/goods?page=1&size=500&sort_type=PRIORITY&pdduid=0(传入店铺编号,可以拿到店铺商品资料,拼多多限制最多获取500个商品)
接口3:http://apiv2.yangkeduo.com/v2/goods/{0}/local_group(传入商品id,可以获取拼团信息)
有了这几个api,拼团提醒功能就不在话下,接下来讲解实现过程。
建立新项目
在解决方案下建立PddTool项目,目的是把拼多多相关业务逻辑以专门的一个类库来实现。
在解决方案右键选择“管理解决方案的 NuGet程序包”,搜索安装如下NuGet包,注意版本号。
创建目录,先创建好几个目录,如下图所示:
在Response目录下新建MallEntity类,代码如下:
public class MallEntity { /// <summary> /// /// </summary> public int mall_id { get; set; } /// <summary> /// 木子缘 /// </summary> public string mall_name { get; set; } /// <summary> /// /// </summary> public string logo { get; set; } /// <summary> /// /// </summary> public int goods_num { get; set; } /// <summary> /// 小店主要经营时尚潮流女装,品质女装,质量有保障! /// </summary> public string mall_desc { get; set; } /// <summary> /// /// </summary> public string company_phone { get; set; } /// <summary> /// /// </summary> public string offline_note { get; set; } /// <summary> /// /// </summary> public int chat_enable { get; set; } /// <summary> /// 广东广州天河区沙太路牛利岗大街6巷28号 /// </summary> public string refund_address { get; set; } /// <summary> /// /// </summary> public int score_avg { get; set; } /// <summary> /// /// </summary> public int staple_id { get; set; } /// <summary> /// /// </summary> public int mall_sales { get; set; } /// <summary> /// /// </summary> public int region_emergent { get; set; } /// <summary> /// /// </summary> public int is_open { get; set; } /// <summary> /// /// </summary> public int status { get; set; } /// <summary> /// /// </summary> public int wms_id { get; set; } /// <summary> /// 店铺优惠券,不需要 /// </summary> //public List<string> mall_coupons { get; set; } /// <summary> /// /// </summary> public int server_time { get; set; } }
这是请求api之后,根据返回json数据所生成的类,
http://www.bejson.com/convert/json2csharp/(通过这个工具,可以把json转C#实体类)
再同目录下新建ProductEntity类,代码如下:
/// <summary> /// 拼团 /// </summary> public class Group { /// <summary> /// 拼团人数 /// </summary> public int customer_num { get; set; } /// <summary> /// 拼团价格÷100 /// </summary> public int price { get; set; } } public class Goods_listItem { /// <summary> /// 单买价÷100 /// </summary> public int normal_price { get; set; } /// <summary> /// 已拼数量 /// </summary> public int cnt { get; set; } /// <summary> /// 小图连接 /// </summary> public string thumb_url { get; set; } /// <summary> /// /// </summary> public int event_type { get; set; } /// <summary> /// 市场价÷100 /// </summary> public int market_price { get; set; } /// <summary> /// 【木子缘】毛呢外套女中长款韩版2017新款宽松显廋修身学生百搭大码加厚外套bf过膝气质呢子大衣 /// </summary> public string goods_name { get; set; } /// <summary> /// 商品id /// </summary> public int goods_id { get; set; } /// <summary> /// 【木子缘】毛呢外套女中长款韩版2017新款宽松显廋修身学生百搭大码加厚外套bf过膝气质呢子大衣 /// </summary> public string short_name { get; set; } /// <summary> /// /// </summary> public Group group { get; set; } /// <summary> /// /// </summary> public string country { get; set; } /// <summary> /// 商品主图 /// </summary> public string image_url { get; set; } /// <summary> /// 高清图 /// </summary> public string hd_thumb_url { get; set; } /// <summary> /// /// </summary> public int is_app { get; set; } } public class ProductEntity { /// <summary> /// /// </summary> public List<string> recommend_subject { get; set; } /// <summary> /// /// </summary> public int server_time { get; set; } /// <summary> /// /// </summary> public List<Goods_listItem> goods_list { get; set; } /// <summary> /// /// </summary> public List<string> subject_list { get; set; } }
同目录下再创建KaiTuanEntity类,代码如下:
public class Local_groupItem { /// <summary> /// 拼团订单id /// </summary> public string group_order_id { get; set; } /// <summary> /// 商品id /// </summary> public string goods_id { get; set; } /// <summary> /// 城市名称 /// </summary> public string city_name { get; set; } /// <summary> /// 昵称 /// </summary> public string nickname { get; set; } /// <summary> /// 头像 /// </summary> public string avatar { get; set; } /// <summary> /// /// </summary> public string expire_time { get; set; } /// <summary> /// 用户id /// </summary> public string uid { get; set; } } public class KaiTuanEntity { /// <summary> /// 正在拼团列表 /// </summary> public List<Local_groupItem> local_group { get; set; } /// <summary> /// /// </summary> public int server_time { get; set; } /// <summary> /// 正在拼团人数 /// </summary> public int total { get; set; } }
然后在Entities目录下,创建KaiTuan类,代码如下:
public class KaiTuan { /// <summary> /// 商品id /// </summary> public int Id { get; set; } /// <summary> /// 昵称 /// </summary> public string NickName { get; set; } /// <summary> /// /// </summary> public string SKU { get; set; } /// <summary> /// 订单号 /// </summary> public string OrderNum { get; set; } /// <summary> /// 剩余时间 /// </summary> public double TimeLeft { get; set; } /// <summary> /// 开团单号 /// </summary> public string KaiTuanOrderNum { get; set; } }
继续在Entities目录下创建KaiTuanProduct类,代码如下:
/// <summary> /// 开团商品 /// </summary> public class KaiTuanProduct { /// <summary> /// 商品id /// </summary> public int GoodId { get; set; } /// <summary> /// 商品名称 /// </summary> public string Name { get; set; } /// <summary> /// 商品图片 /// </summary> public string Img { get; set; } /// <summary> /// 开团人数 /// </summary> public int KaiTuanCount { get; set; } }
再类库下创建DateTimeHelper类,代码如下:
public class DateTimeHelper { /// <summary> /// 传入unix时间戳,计算与当前时间之间的小时数 /// </summary> /// <param name="unixTimeStamp"></param> /// <returns></returns> public static double GetHours(long unixTimeStamp) { System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)); // 当地时区 DateTime dt = startTime.AddSeconds(unixTimeStamp); var a = dt - DateTime.Now; return Math.Round(a.TotalHours, 1); } }
再类库下创建MallTool类,实现几个方法,代码如下:
public class MallTool { /// <summary> /// 按店铺id获取店铺资料 /// </summary> /// <param name="mallId"></param> public static MallEntity GetInfo(string mallId) { string url = string.Format("http://apiv4.yangkeduo.com/mall/{0}/info?pdduid=0", mallId); var client = new RestClient(url); var request = new RestRequest(Method.GET); request.AddHeader("cache-control", "no-cache"); request.AddHeader("referer", url); IRestResponse response = client.Execute(request); if (string.IsNullOrWhiteSpace(response.Content) || response.Content.Contains("mall not exists")) { throw new Exception("店铺编号错误!"); } var mall = JsonConvert.DeserializeObject<MallEntity>(response.Content); return mall; } /// <summary> /// 最多拿到500个商品 /// </summary> /// <param name="mallId"></param> /// <returns></returns> public static ProductEntity GetGoods(string mallId) { string url = string.Format( "http://apiv4.yangkeduo.com/v2/mall/{0}/goods?page=1&size=500&sort_type=PRIORITY&pdduid=0", mallId); var client = new RestClient(url); var request = new RestRequest(Method.GET); request.AddHeader("cache-control", "no-cache"); request.AddHeader("referer", url); IRestResponse response = client.Execute(request); var product = JsonConvert.DeserializeObject<ProductEntity>(response.Content); return product; } /// <summary> /// 根据商品id ,获取开团信息 /// </summary> /// <param name="goodId"></param> /// <returns></returns> public static KaiTuanEntity GetKaiTuanInfo(int goodId) { string url = string.Format("http://apiv2.yangkeduo.com/v2/goods/{0}/local_group", goodId); var client = new RestClient(url); var request = new RestRequest(Method.GET); request.AddHeader("cache-control", "no-cache"); request.AddHeader("referer", url); IRestResponse response = client.Execute(request); var content = response.Content.Replace("\"", """); content = content.Replace("\\", "\").Replace(""{", "{").Replace("}"", "}"); var kaiTuan = JsonConvert.DeserializeObject<KaiTuanEntity>(content); return kaiTuan; } /// <summary> /// 根据商品id,获取此商品所有开团信息 /// </summary> /// <param name="goodId"></param> /// <returns></returns> public static List<KaiTuan> GetAllKaiTuanByGoodId(int mallId, int goodId) { int total = 0;// 总开团数量 var kaituan = GetKaiTuanInfo(goodId); total = kaituan.total; List<KaiTuan> groups = new List<KaiTuan>(); int maxNoKaituan = 20;//获取拼团 int noKaituan = 0;//获取拼团,返回的数据中没有新的拼团则+1 //获取开团信息存放集合里面 AddRange(groups, kaituan, mallId, goodId, ref noKaituan); //开团数量大于5就分页循环 if (kaituan.total > 5) { while (true) { //重试了maxNoKaituan次,还是没有新数据就退出 if (noKaituan >= maxNoKaituan) { break; } kaituan = GetKaiTuanInfo(goodId); //已获取到的开团数>=获取回来的开团数 就退出 if (groups.Count >= kaituan.total) { break; } AddRange(groups, kaituan, mallId, goodId, ref noKaituan); } } return groups; } /// <summary> /// 根据店铺id,获取所有商品的开团人数 /// </summary> /// <param name="mallId"></param> /// <returns></returns> public static List<KaiTuanProduct> GetKaiTuanList(string mallId) { var goods = GetGoods(mallId); if (goods.goods_list.Count == 0) { throw new UserFriendlyException("此店铺商品为 0"); } List<KaiTuanProduct> kaiTuanProducts = new List<KaiTuanProduct>(); foreach (var goodsListItem in goods.goods_list) { var kaituanProduct = GetKaiTuanCountByGoodId(goodsListItem.goods_id); if (kaituanProduct == null) { continue; } kaituanProduct.Name = goodsListItem.goods_name; kaituanProduct.GoodId = goodsListItem.goods_id; kaituanProduct.Img = goodsListItem.thumb_url; kaiTuanProducts.Add(kaituanProduct); } return kaiTuanProducts; } /// <summary> ///根据商品id, 获取开团人数 /// </summary> /// <param name="goodId"></param> public static KaiTuanProduct GetKaiTuanCountByGoodId(int goodId) { var kaituanInfo = GetKaiTuanInfo(goodId); if (kaituanInfo.total == 0) { return null; } return new KaiTuanProduct() { KaiTuanCount = kaituanInfo.total }; } public static void AddRange(List<KaiTuan> groups, KaiTuanEntity kaiTuan, int mallId, int goodId, ref int noKaituan) { bool isExist = true; int count = 0; foreach (var localGroupItem in kaiTuan.local_group) { //过滤已经存在的拼团 if (groups.Any(a => a.KaiTuanOrderNum == localGroupItem.group_order_id)) { count++; isExist = false; continue; } //过滤时间小于0的拼团 var t = DateTimeHelper.GetHours(Convert.ToInt64(localGroupItem.expire_time)); if (t <= 0) { count++; isExist = false; continue; } var item = new KaiTuan() { Id = Convert.ToInt32(localGroupItem.goods_id), KaiTuanOrderNum = localGroupItem.group_order_id, NickName = localGroupItem.nickname, TimeLeft = DateTimeHelper.GetHours(Convert.ToInt64(localGroupItem.expire_time)), }; groups.Add(item); isExist = true; } if (isExist == false && count == kaiTuan.local_group.Count) { noKaituan++; } } }
可以看到UserFriendlyException报异常,这是abp的异常类,接着解决方案再打开”管理解决方案的 NuGet程序包”,搜索:“abp”安装。
最后项目结构如下,拼团提醒功能就封装好了。
创建单元测试
在解决方案Tests目录下新建单元测试项目,如下图所示:
新建MallTool_Test类,用来测试刚刚封装的几个方法,代码如下:
[TestClass] public class MallTool_Test { public string mallId { get; set; } = "1277675"; [TestMethod] public void TestGetInfo() { MallEntity result=MallTool.GetInfo(mallId); Console.WriteLine(result.mall_name); } }
下图为调试输出结果:
以上代码传入店铺编号,获取店铺资料,
店铺编号哪里来?
http://mobile.yangkeduo.com/search_result.html?search_key=%E6%89%93%E5%BA%95%E8%A1%AB%E5%A5%B3&search_src=history&search_met=history_sort&search_met_track=history&refer_page_name=search&refer_page_id=&page_id=&sp=0&item_index=1&is_back=1
通过以上连接可以查询拼多多商品信息,接着随便点入一个商品,点击“进店逛逛”,如下图所示:
进来之后就可以看到地址栏就有店铺编号,如下图所示:
其它几个方法测试类似,就不一一说明。