C# HtmlNode.SelectSingleNode方法代码示例

        private static void AddPackage(SteamApp app, HtmlNode packageNode)
        {
            var package = app.AddNewPackage();

            var packageTitleNode = packageNode.SelectSingleNode($"//{PackageTitle}");

            package.Title = packageTitleNode.InnerHtml.Replace("Buy ", "").Trim();

            var priceNodes = packageNode.SelectNodes($"//div[@class='{PackagePriceXPath}']");

            if (priceNodes != null)
            {
                var priceNode = priceNodes[0];

                package.CurrentPrice = ParseNodeWithCurrencyToDecimal(priceNode);

                package.OriginalPrice = package.CurrentPrice;
            }
            else
            {
                var originalPriceNode = packageNode.SelectSingleNode($"//div[@class='{PackageOriginalPriceXPath}']");

                package.OriginalPrice = ParseNodeWithCurrencyToDecimal(originalPriceNode);

                var discountPriceNode = packageNode.SelectSingleNode($"//div[@class='{PackageDiscountPriceXPath}']");

                package.CurrentPrice = ParseNodeWithCurrencyToDecimal(discountPriceNode);
            }
        }

        public Segment GetSegment(HtmlNode segmentDiv, string day)
        {
            var imgDiv = segmentDiv.SelectSingleNode("./div[@class='programListContentImgArea']");
            var txtDiv = segmentDiv.SelectSingleNode("./div[@class='programListContentTextArea scheduleColumnTextArea']");

            var anchor = txtDiv.GetChildById("hypProgramTxt");
            var authorNode = txtDiv.GetChildById("lblAuthor");
            var imageNode = imgDiv.SelectSingleNode(".//img");

            //TODO: Move url building (below) into UrlBuilder class

            var segment = new Segment
            {
                DayDescription = day,
                Title = anchor.DecodeHtml(),
                SegmentDetailUrl = configurationManager.BookTvDomain + anchor.GetAttributeValue("href", ""),
                Time = txtDiv.GetChildById("lblAirTime").DecodeHtml(),
                Duration = txtDiv.GetChildById("lblLength").DecodeHtml(),
                Author = (authorNode == null) ? "" : authorNode.DecodeHtml(),
                ImageUrl = configurationManager.BookTvDomain + imageNode.Attributes["src"].Value,
            };

            segment.DurationInMinutes = durationParser.GetDurationInMinutes(segment.Duration);
            segment.Date = dayParser.Parse(segment.DayDescription);

            return segment;
        }

        public Trade(HtmlNode code)
        {
            htmlCode = code;

            //  fetch the trade ID (well, actually its the url)
            id = htmlCode.SelectSingleNode("//a[contains(@href,'/trade/')]").GetAttributeValue("href", "");

            //  fetch the name, donator type is used to find it
            HtmlNode node = htmlCode.SelectSingleNode("//span[@class='regular' or starts-with(@class, 'donator')]");
            name = (node != null) ? node.InnerText : null;

            //  the trade's description
            HtmlNode descriptionNode = htmlCode.SelectSingleNode("//div[@class='notes expandable show']");
            description = (descriptionNode != null) ? descriptionNode.InnerText : "";

            /*
             * here we construct the item objects
             *
             */
            HtmlNode itemOfferBundleHtml = htmlCode.SelectSingleNode("(div[@class='four-column'])[1]");
            HtmlNode itemRequestBundleHtml = htmlCode.SelectSingleNode("(div[@class='four-column'])[2]");

            HtmlNodeCollection itemOfferHtml = itemOfferBundleHtml.SelectNodes("div[starts-with(@class, 'item')]");
            HtmlNodeCollection itemRequestHtml = itemRequestBundleHtml.SelectNodes("div[starts-with(@class, 'item')]");

            offer = new List<Item>();
            request = new List<Item>();

            for (int i = 0; i < itemOfferHtml.Count; i++) { offer.Add(new Item(itemOfferHtml[i])); }
            for (int i = 0; i < itemRequestHtml.Count; i++) { request.Add(new Item(itemRequestHtml[i])); }
        }

        private ProductBasicData BuildProductBasicData(HtmlNode productNode)
        {
            log.DebugFormat("[BuildProductBasicData] OuterHtml= {0}.", productNode.OuterHtml);
            //throw new NotImplementedException();
            ProductBasicData returnValue = new ProductBasicData();

            //should be transfered to barcode, but last digitals of the barcode is productId
            returnValue.Barcode = productNode.Attributes.First(c => c.OriginalName == "DdPiD").Value;
            returnValue.ProductId = productNode.Attributes.First(c => c.OriginalName == "DdPiD").Value;
            returnValue.pbcatid = productNode.Attributes.First(c => c.OriginalName == "pbcatid").Value;
            returnValue.qty = productNode.Attributes.First(c => c.OriginalName == "qty").Value;
            returnValue.iq = productNode.Attributes.First(c => c.OriginalName == "iq").Value;
            returnValue.inb = productNode.Attributes.First(c => c.OriginalName == "inb").Value;

            //returnValue.ImageSource = productNode.SelectSingleNode("//img[@src]").Attributes.FirstOrDefault(c=> c.Name == "src").Value;

            returnValue.ImageSource = productNode.SelectNodes("child::*/child::div/child::img").First().Attributes.First(c => c.Name == "src").Value;
            returnValue.EffectivePrice = productNode.SelectSingleNode("child::*/child::div/child::div/child::div/child::span").InnerText;

            //returnValue.EffectivePrice = productNode.SelectSingleNode("//span[@id='spnEffectivePrice']").InnerText;
            //returnValue.Description = HttpUtility.HtmlDecode(productNode.SelectSingleNode("//div[@class='ProdBoxSupplierText']").InnerText);

            returnValue.Description = HttpUtility.HtmlDecode(productNode.SelectSingleNode("child::*/child::div/child::div/child::a").InnerText);
            returnValue.ProductName = HttpUtility.HtmlDecode(productNode.SelectSingleNode("child::*/child::div/child::div/child::a").InnerText);
            log.DebugFormat("[BuildProductBasicData] fetched product={0}.", returnValue.ToString());
            return returnValue;
        }

        internal Match MapHtmlNodeToMatch(HtmlNode root, MatchPath matchPath, int currentCount)
        {
            Match match = new Match();
            match.Id = HtmlEntity.DeEntitize(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Id, currentCount)).Attributes[matchPath.IdAttribute].Value).Replace(matchPath.IdReplace, "");

            HtmlNode heroNode = root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Hero, currentCount));
            if (heroNode != null)
            {
                string heroReference = root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Hero, currentCount)).Attributes[HtmlAttributes.Hero.Attribute.Value].Value.Replace(HtmlAttributes.Hero.Replace.Value, "");
                match.Hero = mainController.HeroController.GetHero(heroReference);
            }

            match.Result = mainController.MapStringToEnum<Results>(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Result, currentCount)).InnerText);
            match.TimeAgo = DateTime.Parse(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.TimeAgo, currentCount)).Attributes[MainController.HTML_ATTRIBUTE_DATETIME].Value);
            match.Type = mainController.MapStringToEnum<Types>(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Type, currentCount)).InnerText);
            match.Mode = mainController.MapStringToEnum<Modes>(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Mode, currentCount)).InnerText);

            HtmlNode skillBracketNode = root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Skillbracket, currentCount));
            if (skillBracketNode != null)
                match.Skillbracket = mainController.MapStringToEnum<Skillbrackets>(HtmlEntity.DeEntitize(skillBracketNode.InnerText));

            match.Duration = mainController.ConvertStringToTimeSpan(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Duration, currentCount)).InnerText);
            match.Kda = mainController.ConvertStringToKda(root.SelectSingleNode(mainController.CombinePathWithListCount(matchPath.Kda, currentCount)).InnerText);
            return match;
        }

        private string VariableNameResolver(HtmlNode row)
        {
            var isOptional = row.SelectSingleNode(@".//td[contains(@class,'description')]/span[@class='optional']");

            var variable = row.SelectSingleNode(@".//td[@class=""name"" ]").InnerText + (isOptional != null ? "?" : "");
            return variable;
        }

 private static string getMoney(HtmlNode node)
 {
     try
     {
         string money = "";
         string gold = HtmlEntity.DeEntitize(node.SelectSingleNode("descendant::span[@class='mgold']").InnerText).TrimStart();
         string silver = HtmlEntity.DeEntitize(node.SelectSingleNode("descendant::span[@class='msilver']").InnerText).TrimStart();
         string bronze = HtmlEntity.DeEntitize(node.SelectSingleNode("descendant::span[@class='mbronze']").InnerText).TrimStart();
         if (gold != "")
             money += gold;
         if (silver != "")
             if (silver.Length > 1)
                 money += silver;
             else
                 if (gold == "")
                     money += silver;
                 else
                     money += '0' + silver;
         if (bronze.Length > 1)
             money += bronze;
         else
             money += '0' + bronze;
         return money;
     }
     catch (NullReferenceException e)
     {
         return "";
     }
 }

        private static ArticleInfo ParseArticleInfoDiv(HtmlNode articleDiv)
        {
            var linkToArticle = articleDiv.SelectSingleNode("h3/a");
            var dateDiv = articleDiv.SelectSingleNode("div[@class='headline-date']");
            var commentCountNode = articleDiv.SelectSingleNode("h3/a[@class='commentCount']");

            var articleInfo = new ArticleInfo();

            articleInfo.Url = linkToArticle.Attributes["href"].Value;
            if (articleInfo.Url.Contains(@"/video/"))
            {
                throw new CommonParsingException("Delfi TV article");
            }

            articleInfo.Id.ExternalId = articleInfo.Url.GetQueryParameterValueFromUrl("id");
            articleInfo.Title = linkToArticle.InnerText;
            articleInfo.DatePublished = DelfiWordyDateParser.Parse(dateDiv.InnerText);
            articleInfo.DateScraped = DateTime.UtcNow.AddHours(2);
            articleInfo.Id.Portal = Portal.Delfi;
            articleInfo.CommentCount = commentCountNode == null ? 0 : Convert.ToInt32(commentCountNode.InnerText.TrimStart('(').TrimEnd(')'));

            var articleId = Convert.ToInt32(articleInfo.Url.GetQueryParameterValueFromUrl("id"));
            if (articleId == 0) throw new CommonParsingException("Article id not found");

            return articleInfo;
        }

        internal Stat MapHtmlNode(HtmlNode root, int currentCount)
        {
            string matchesPlayed = root.SelectSingleNode(string.Format(PlayerPath.MostPlayedHeroes.MatchesPlayed.Value, currentCount)).InnerText;
            string winRate = root.SelectSingleNode(string.Format(PlayerPath.MostPlayedHeroes.Winrate.Value, currentCount)).InnerText;
            string kdaRatio = root.SelectSingleNode(string.Format(PlayerPath.MostPlayedHeroes.Kda.Value, currentCount)).InnerText;

            return new Stat(matchesPlayed.Replace(",", ""), winRate, kdaRatio.Replace(".", ","));
        }

        private string VariableTypeResolver(HtmlNode row)
        {
            var tdType = row.SelectSingleNode(@".//td[@class=""type"" ]");
            //EntityCollection  contains(entity) as no type information.
            var typeNodes = tdType.SelectNodes(@".//span[@class='param-type']");
            if (typeNodes == null)
                return "any";

            var types = typeNodes.Select(Program.TypeReader).ToArray().Distinct();

            if (!types.Skip(1).Any() && types.First() == "Object")
            {


                var props = GetSignatureTypes(row.SelectSingleNode(@".//td[contains(@class,'description')]"));

                
                

                if (props.Keys.Any())
                {
                    
                    //   var type = "opt_" + Program.CalculateMD5Hash(string.Join("", props.Keys.OrderBy(k => k)));
                    var type = this._name + "Options";
                    var dependencies = new List<string>();

                    var writer = Program.GetWriter(type,_source);
                    if (writer != null)
                    {
                       

                        props = props.ToDictionary(k => k.Key, v => Program.extractDependencies(dependencies, v.Value));


                        Program.WriteDependencies(type, dependencies, writer, null, null, _source);


                        writer.WriteLine($"interface {type}");
                        writer.WriteLine("{");
                        foreach (var prop in props)
                        {
                           
                            writer.WriteLine($"\t{prop.Key}: {prop.Value};");

                        }
                        writer.WriteLine("}");
                        writer.WriteLine($"export = {type}");

                    }

                    return "Cesium." + type;
                }

            }

            return string.Join("|", types);

        }

 public static Remark ParseRemark(HtmlNode remarkNode)
 {
     var remark = new Remark();
     //发现物
     var discoveryNode = remarkNode.SelectSingleNode("a[@title!='']");
     if (discoveryNode!=null)
     {
         var levelNode = discoveryNode.PreviousSibling.PreviousSibling;
         var typeNode = levelNode.PreviousSibling.PreviousSibling;
         remark.DiscoveryType = Enum.Parse(typeof(DisType), typeRegex.Match(typeNode.Attributes["src"].Value).Groups["type"].Value).ToString();
         remark.DiscoveryLevel = Int32.Parse(levelNode.InnerText.Substring(0, 1));
         remark.DiscoveryExp = Int32.Parse(discoveryNode.Attributes["title"].Value.Remove(0,5));
         remark.Discovery = discoveryNode.InnerText;
     }
     //奖励物
     var awardNode = remarkNode.SelectSingleNode("span[@style='color:#804000;']");
     if (awardNode != null)
         remark.AwardItem = awardNode.InnerText;
     //相关任务
     var relativeNodes = remarkNode.SelectNodes("descendant::a[@style='color:#C000C0;' or @style='color:DarkBlue;']");
     if (relativeNodes != null)
     {
         foreach (HtmlNode relativeNode in relativeNodes)
         {
             IList<int> questList = null;
             IList<string> foundNameList = null;
             if (relativeNode.InnerText.StartsWith("前:"))
             {
                 foundNameList = remark.PreFoundName;
                 questList = remark.PreQuestID;
             }
             else
             {
                 questList = remark.FollowQuestID;
             }
             var match = questRegex.Match(relativeNode.Attributes["href"].Value);
             if (relativeNode.InnerText.StartsWith("前:港口-") == false)
                 questList.Add(Int32.Parse(match.Groups["id"].Value));
             else
                 foundNameList.Add(relativeNode.InnerText.Replace("前:港口-",""));
         }
     }
     //接受城市
     //last br next a
     var cityNodes = remarkNode.SelectNodes("descendant::a[@class='MisCity']");
     if (cityNodes != null)
     {
         cityNodes.All(node =>
         {
             if (node.InnerText == "南美开拓港" || node.InnerText == "东南亚开拓港" ||
                 node.InnerText == "掠夺地图" || node.InnerText == "沉船资讯")
                 return true;
             remark.FromCityList.Add(node.InnerText);
             return true;
         });
     }
     return remark;
 }

        protected override string ExtractSnippet(HtmlNode node)
        {
            if (node.SelectSingleNode("div/div[2]") != null)
            {
                return node.SelectSingleNode("div/div[2]").InnerText;
            }

            return string.Empty;
        }

        protected override string ExtractAuthor(HtmlNode node)
        {
            if (node.SelectSingleNode("div/div[2]/div/div/span") != null)
            {
                return node.SelectSingleNode("div/div[2]/div/div/span").InnerText.Split('-')[0].Trim();
            }

            return string.Empty;
        }

 private string getDescription(HtmlNode node)
 {
     var node2 = node.SelectSingleNode(".//div[@class='hoverbox-details']/p");
     if (node2 == null)
         node2 = node.SelectSingleNode(".//div[@class='list-item-main1']");//klipit
     if (node2 != null)
         return node2.InnerText;
     return String.Empty;
 }

        protected override string ExtractTitle(HtmlNode node)
        {
            if (node.SelectSingleNode("div/div[1]/h3/a") != null)
            {
                return node.SelectSingleNode("div/div[1]/h3/a").InnerText;
            }

            return string.Empty;
        }