”抓取“

1.数据库表格的建立;
2.利用"抓取"模板;3.添加引用：  Nuget程序包：Jumony,Json;   项目：WebBot中的dll文档,位于bin目录下.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Skay.WebBot;
using Ivony.Html;
using Ivony.Html.Parser;
using System.Threading;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Data.SqlClient;
namespace 抓取
{
    class Program
    {
        public static Thread th;
        static void Main(string[] args)
        {
            SqlConnection conn = new SqlConnection("Data Source=PC-201511281446;Initial Catalog=数据;Integrated Security=True");
            conn.Open();
            th = new Thread(new ThreadStart(GetJDData));
            th.Start();
            conn.Close();

        }
        private static void GetJDData()
        {
            HttpUtility http = new HttpUtility();
            string html = http.GetHtmlText("http://www.htluxe.com/category.php?category=63&display=list&brand=0&price_min=0&price_max=0&filter_attr=0&page=1&sort=goods_id&order=DESC#goods_list");
            var documenthtml = new JumonyParser().Parse(html);
            var items = documenthtml.Find(".piclist li");
            //Console.WriteLine(items.Count());数据的总数
            foreach (var item in items)
            {
                SqlConnection conn = new SqlConnection("Data Source=PC-201511281446;Initial Catalog=数据;Integrated Security=True");
                conn.Open();
                string title = item.FindFirst(".base a").InnerText();
                string min_price = item.FindFirst(".base .price .minprice").InnerText();
                string max_price = item.FindFirst(".base .price .maxprice").InnerText();
                string goodsurl = item.FindFirst(".base a").Attribute("href").Value();
                string visitsum = item.FindFirst(".sum .ratecount strong").InnerText();
                string salesum = item.FindFirst(".sum .soldnum strong").InnerText();
                goodsurl = "http://www.htluxe.com/" + goodsurl;//需拼接完整，才能 用http.GetHtmlText()
                Console.WriteLine(title);
                string Area_Html = http.GetHtmlText(goodsurl, "utf-8", "text/html; charset=utf-8", "");
                //获取网址
                var documenthtml1 = new JumonyParser().Parse(Area_Html);
                var item1s = documenthtml1.Find(".promotionMiddleTop");
                //获取所需要的东西,可将其看为数,遍历取自己所要的;
                string Code = "";
                foreach(var item1 in item1s)
                {
                    Code = item1.FindFirst(".bh").InnerText();
                }
                var item2s = documenthtml1.Find(".comment-tab .clearfix li");
                string Bestping = "";
                string Goodping = "";
                string Badping = "";
                int flag = 0;
                foreach (var item2 in item2s)
                {
                    if (flag == 0)
                    {
                        flag++;
                    }
                    else if (flag == 1)
                    {
                        flag++;
                        Bestping = item2.FindFirst("a").InnerText();
                    }
                    else if (flag == 2)
                    {
                        flag++;
                        Goodping = item2.FindFirst("a").InnerText();
                    }
                    else if(flag == 3)
                    {
                        flag++;
                        Badping = item2.FindFirst("a").InnerText();
                    }
                   
                }
                string sql = string.Format("insert into milk values ('{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}')",title,Code,min_price,max_price,salesum,visitsum,Bestping,Goodping,Badping );
                SqlCommand cmd = new SqlCommand(sql, conn);
                cmd.ExecuteNonQuery();
                conn.Close();
            }
            Console.ReadKey();
        }
    }
}