背景
最近NBA总决赛吸引了不少球迷，但是因为时差的关系，人家在比赛，我们在上班，有时候上班又不好意思光明正大的看比赛，那有什么办法 可以光明正大的看又不被发现呢。
有，自己动手丰衣足食，ChromeDriver+HtmlAgilityPack爬取比赛实时比分。
概述
WebDriver 就是对浏览器提供的原生API进行封装，使其成为一套更加面向对象的Selenium WebDriver API。使用这套API可以操控浏览器的开启、关闭，打开网页，操作界面元素，控制Cookie，还可以操作浏览器截屏、安装插件、设置代理、配置证书等。
HtmlAgilityPack是.net下的一个HTML解析类库。支持用XPath来解析HTML。这个意义不小，为什么呢？因为对于页面上的元素的xpath某些强大的浏览器能够直接获取得到，并不需要手动写。节约了大半写正则表达式的时间，当然正则表达式有时候在进一步获取的时候还需要写，但是通过xpath解析之后，正则表达式已经要匹配的范围已经非常小了。而且，不用正则表达式在整个页面源代码上匹配，速度也会有提升。总而言之，通过该类库，先通过浏览器获取到xpath获取到节点内容然后再通过正则表达式匹配到所需要的内容，无论是开发速度，还是运行效率都有提升。
代码实现
下面我们来看下如何使用ChromeDriver+HtmlAgilityPack爬取比赛实时比分。
抓取网页
//apistring url = "https://sports.qq.com/kbsweb/game.htm?mid=" + model.TxMatchId;// string url = "https://kbs.sports.qq.com/kbsweb/game.htm?mid=100000:55370464";// MatchUpdate model = new MatchUpdate();var cds = ChromeDriverService.CreateDefaultService();//是否应隐藏服务的命令提示符窗口cds.HideCommandPromptWindow = true;ChromeOptions options = new ChromeOptions();options.AddArguments("--test-type", "--ignore-certificate-errors");// options.AddArguments("user-agent=mozilla/5.0 (linux; u; android 2.3.3; en-us; sdk build/ gri34) applewebkit/533.1 (khtml, like gecko) version/4.0 mobile safari/533.1");options.AddArgument("enable-automation");// options.setBinary("C:/Program Files (x86)/Google/Chrome/chrome.exe");var r = ZhimaHttpProxy.GetProxy(false);if (r != null){Console.WriteLine(r.Address.Host);Console.WriteLine(r.Address.Port);string proxy_Host = r.Address.Host;int proxy_Post = r.Address.Port;string Ex_Proxy_Name = "proxy.zip";options.Proxy = null;options.AddArguments("--proxy-server=" + proxy_Host + ":" + proxy_Post.ToString());options.AddExtension(Ex_Proxy_Name);}if (IsHideMode)options.AddArgument("headless");string dic = System.Environment.CurrentDirectory + "\\cos";if (IsHideMode){using (IWebDriver driver = new OpenQA.Selenium.Chrome.ChromeDriver(cds, options, TimeSpan.FromSeconds(120))){Excule(driver, url, model);}}else{using (IWebDriver driver = new OpenQA.Selenium.Chrome.ChromeDriver(dic, options, TimeSpan.FromSeconds(120))){Excule(driver, url, model);}}解析网页
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();doc.LoadHtml(Helper.ReadTxt(System.Environment.CurrentDirectory + "\\PageSource\\" + info.TxMatchId.Replace(":", "_") + ".txt"));int? HomeTeamScore = null;int? GuestTeamScore = null;List<MatchScore> MatchScoreList = new List<MatchScore>();HtmlNode titleNodes = doc.DocumentNode.SelectSingleNode("//div[@class='inner']");var titleNodes2 = doc.DocumentNode.SelectSingleNode("//div[@class='content-wrapper']");if (titleNodes2 != null)// if (false){Console.WriteLine(titleNodes2.InnerText);var host = titleNodes2.SelectSingleNode("//div[@class='team-goal host']");var arr = host.InnerText.Replace("\r\n", "|");var arrs = arr.Split('|');arrs = arrs.Where(o => !string.IsNullOrWhiteSpace(o)).Select(o => o.Split('(')[0].Trim()).ToArray();HomeTeamScore = int.Parse(arrs[1]);MatchScoreList.Add(new MatchScore() { TeamName = arrs[0], TeamScore = HomeTeamScore });var guest = titleNodes2.SelectSingleNode("//div[@class='team-goal guest']");var arr2 = guest.InnerText.Replace("\r\n", "|");var arrs2 = arr2.Split('|');arrs2 = arrs2.Where(o => !string.IsNullOrWhiteSpace(o)).Select(o => o.Split('(')[0].Trim()).ToArray();GuestTeamScore = int.Parse(arrs2[1]);MatchScoreList.Add(new MatchScore() { TeamName = arrs2[0], TeamScore = GuestTeamScore });}else{var a = titleNodes.SelectNodes("//a[@data-target='teamName']");var score = titleNodes.SelectNodes("//span[@class='score']");if (score != null){int i = 0;foreach (var item in score){SetText("\r\n" + item.InnerText?.Trim());if (i == 0){HomeTeamScore = Convert.ToInt32(item.InnerText?.Trim());}if (i == 1){GuestTeamScore = Convert.ToInt32(item.InnerText?.Trim());}i++;}}if (a != null){int i = 0;foreach (var item in a){SetText("\r\n" + item.InnerText?.Trim());if (i == 0){MatchScoreList.Add(new MatchScore() { TeamName = item.InnerText?.Split('(')[0].Trim(), TeamScore = HomeTeamScore });}if (i == 1){MatchScoreList.Add(new MatchScore() { TeamName = item.InnerText?.Split('(')[0].Trim(), TeamScore = GuestTeamScore });}i++;}}}string statusstr = "";var t = titleNodes.SelectSingleNode("//div[@class='datetime-live-desc']");SetText("\r\n" + t.InnerText?.Trim());statusstr = t.InnerText?.Trim();var Status = info.Status;if (!string.IsNullOrWhiteSpace(statusstr) && statusstr.Contains("已结束")){Status = MatchStatus.End;}最后再搞个小弹框，把数据输出即可。