Exemple #1
0
        private void Get(int i)
        {
            try {
                string appPath = AppContext.BaseDirectory;
                if (Directory.Exists(appPath))
                {
                    DirectoryInfo directoryInfo = new DirectoryInfo(appPath);
                    //directoryInfo = directoryInfo.Parent.Parent.Parent;
                    appPath = directoryInfo.ToString() + "\\wwwroot\\images\\";
                }

                List <GoodsInfo> list = new List <GoodsInfo>();

                int    start = 15 * i;
                string json  = HttpGet("https://store.steampowered.com/contenthub/querypaginated/specials/TopSellers/render/?query=&start=" + start + "&count=15&cc=CN&l=schinese&v=4&tag=", "");
                json = Regex.Match(json, "\"results_html\":\"[\\S\\s]*\",").Value;
                int startIndex = "\"results_html\":\"".Count();
                json = json.Substring(startIndex, json.Count() - startIndex - 2);
                json = Regex.Unescape(json);
                string pageHtml = json;

                //初始化网络请求客户端
                HtmlWeb webClient = new HtmlWeb();
                //初始化文档
                //HtmlDocument doc = webClient.Load("https://store.steampowered.com/specials?p=4&tab=TopSellers");
                HtmlDocument doc = new HtmlDocument();
                doc.LoadHtml(pageHtml);
                //查找节点
                HtmlNodeCollection itemNodes = doc.DocumentNode.SelectNodes(".//a[@class='tab_item  ']");
                if (itemNodes != null)
                {
                    Regex priceRegex = new Regex("\\d+(\\.\\d+)?");
                    foreach (var item in itemNodes)
                    {
                        GoodsInfo g = new GoodsInfo();
                        g.name          = item.SelectNodes(".//div[@class='tab_item_name']")[0].InnerText;
                        g.originalPrice = priceRegex.Match(item.SelectNodes(".//div[@class='discount_original_price']")[0].InnerText).Value;
                        g.finalPrice    = priceRegex.Match(item.SelectNodes(".//div[@class='discount_final_price']")[0].InnerText).Value;
                        g.pct           = priceRegex.Match(item.SelectNodes(".//div[@class='discount_pct']")[0].InnerText).Value;
                        g.img           = item.SelectNodes(".//img[@class='tab_item_cap_img']")[0].Attributes["src"].Value;
                        g.img           = FileDownSave(g.img, appPath);
                        foreach (var t in item.SelectNodes(".//span[@class='top_tag']"))
                        {
                            g.tag += t.InnerText;
                        }
                        list.Add(g);
                    }
                }
                int        rank = 1 + 15 * (i - 1);
                List <int> arr  = new List <int>();
                for (int j = 0; j < 15; j++)
                {
                    arr.Add(rank + j);
                }

                ActivityDAO     activityDAO  = new ActivityDAO();
                List <Activity> activityList = activityDAO.GetAll().Where(e => e.status == 1 && arr.Contains(e.rank)).ToList();

                int alc = activityList.Count();
                for (int j = 0; j < alc; j++)
                {
                    activityList[j].endTime = DateTime.Now;
                    activityList[j].status  = 0;
                }
                int batch = 0;
                if (alc != 0)
                {
                    activityDAO.BatchUpdate(activityList);
                    batch = activityList[0].batch;
                }

                GoodsDAO        goodsDAO        = new GoodsDAO();
                List <Activity> newActivityList = new List <Activity>();
                foreach (var g in list)
                {
                    Goods goods = goodsDAO.GetAll().Where(e => e.name == g.name).FirstOrDefault();
                    if (goods == null)
                    {
                        goods = new Goods()
                        {
                            name       = g.name,
                            price      = decimal.Parse(g.originalPrice),
                            tag        = g.tag,
                            imgURI     = g.img,
                            createTime = DateTime.Now,
                            status     = 1
                        };
                        goodsDAO.Add(goods);
                    }
                    else
                    {
                        if (File.Exists(goods.imgURI))
                        {
                            FileInfo fileInfo = new FileInfo(goods.imgURI);
                            fileInfo.Delete();
                        }

                        goods.imgURI     = g.img;
                        goods.price      = decimal.Parse(g.originalPrice);
                        goods.tag        = g.tag;
                        goods.createTime = DateTime.Now;
                        goods.status     = 1;
                        goodsDAO.Update(goods);
                    }

                    Activity activity = new Activity()
                    {
                        goodsId    = goods.id,
                        finalPrice = decimal.Parse(g.finalPrice),
                        pct        = int.Parse(g.pct),
                        status     = 1,
                        createTime = DateTime.Now,
                        rank       = rank++,
                        batch      = batch + 1
                    };

                    newActivityList.Add(activity);
                }
                activityDAO.SaveList(newActivityList);
            } catch (Exception ex)
            {
                throw ex;
            }
        }