京东优惠叠加的获取

最近双十一，双十二，促销多的眼花缭乱，领了n多优惠卷，为了合理凑单实在是浪费了好多时间。

于是这几天写了一个小工具，可以分析优惠卷凑单页里所有商品都参加哪些活动，这样能节约我们凑单的时间。

可以快速找到 2件5折又同时参加 199-100 活动的商品

这样就可以开心的剁手啦

这里我借鉴了很多前辈的经验

大神1：http://www.cnblogs.com/asxinyu/p/CSharp_HtmlAgilityPack_XPath_Weather_Data.html

大神2：https://www.cnblogs.com/jjg0519/p/6702833.html

大神3：https://www.cnblogs.com/cpcpc/archive/2012/09/10/2679098.html

大神4：https://blog.csdn.net/xing851483876/article/details/80817578

大神5：http://www.cnblogs.com/xxue/p/9977801.html

然后整理了一下各位大神的代码，写出这个小软件。

编码很多年，水平实在抱歉。

这个是获取优惠页最大页数。

public int getMaxpage(string htmlstr)
        {
            int maxpage = 0;
            try
            {
                string html = htmlstr;
                HtmlDocument doc = new HtmlDocument();
                doc.LoadHtml(html);
                string goodClass = "//div[@id='J_topPage']";
                //string goodClass = @"//*[@class='gl-item']/dl/dd";
                HtmlNodeCollection noneNodeList = doc.DocumentNode.SelectNodes(goodClass);
                foreach (var node in noneNodeList)
                {
                    JDspxx jdspxx = new JDspxx();
                    HtmlDocument docChild = new HtmlDocument();
                    docChild.LoadHtml(node.OuterHtml);
 
                    var dc = docChild.DocumentNode.SelectSingleNode("//i");
                    maxpage = int.Parse(dc.InnerText);                    
                }
                return maxpage;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            return maxpage;
        }　　

这个是获取商品信息

public List<JDspxx> reHtml(string htmlstr)
        {
            List<JDspxx> jdlist = new List<JDspxx>();
            try
            {
                string html = htmlstr;
                HtmlDocument doc = new HtmlDocument();
                doc.LoadHtml(html);
                string goodClass = "//li[@class='gl-item']";
                //string goodClass = @"//*[@class='gl-item']/dl/dd";
                HtmlNodeCollection noneNodeList = doc.DocumentNode.SelectNodes(goodClass);
                foreach (var node in noneNodeList)
                {
                    JDspxx jdspxx = new JDspxx();
                    HtmlDocument docChild = new HtmlDocument();
                    docChild.LoadHtml(node.OuterHtml);
 
                    string spmc = "//div[@class='p-name p-name-type-2']";
                    HtmlNodeCollection listspmc = docChild.DocumentNode.SelectNodes(spmc);
                    {
                        HtmlDocument docChild1 = new HtmlDocument();
                        docChild1.LoadHtml(listspmc[0].OuterHtml);
                        jdspxx.url = listspmc[0].ChildNodes[1].Attributes["href"].Value;
 
                        var dc = docChild1.DocumentNode.SelectSingleNode("//em");
                        jdspxx.spmc = dc.InnerText;
                    }
 
                    string price = "//div[@class='p-price']";
                    HtmlNodeCollection listprice = docChild.DocumentNode.SelectNodes(price);
                    {
                        HtmlDocument docChild1 = new HtmlDocument();
                        docChild1.LoadHtml(listprice[0].OuterHtml);
                        var dc = docChild1.DocumentNode.SelectSingleNode("//i");
                        jdspxx.price = dc.InnerText;
                    }
 
 
                    string yhxx = "//div[@class='p-icons']";
                    HtmlNodeCollection listyhxx = docChild.DocumentNode.SelectNodes(yhxx);
                    {
                        HtmlDocument docChild1 = new HtmlDocument();
                        docChild1.LoadHtml(listyhxx[0].OuterHtml);
                        var dclist = docChild1.DocumentNode.SelectNodes("//i");
                        List<Yhxx> yhlist = new List<Yhxx>();
                        if (dclist != null)
                        {
                            foreach (var dc in dclist)
                            {
                                Yhxx yh = new Yhxx();
                                yh.yh = dc.InnerText;
                                yhlist.Add(yh);
                                if (!Yhmc.yhmc.Contains(dc.InnerText))
                                {
                                    Yhmc.yhmc.Add(dc.InnerText);
                                }
                            }
                        }
                        jdspxx.yhlist = yhlist;
                    }
 
                    jdlist.Add(jdspxx);
                }
                return jdlist;
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
            return jdlist;
        }