[转载]抢火车票利器：分享一个抓取火车票转让信息的小程序

namespace HuoChePiao
{
class Program
{
private static HashSet<string> results;
private static WebClient wc;
private static List<Site> sites;
private static int index;
private static bool isFirstRound;

static void Main(string[] args)
{
sites = new List<Site>();

sites.Add(new Site()
{
Name = “火车票网“,
Url = “http://www.huochepiao.com/City/SearchCheCi.asp?leixing=%D7%AA%C8%C3&zhuti=t189&psearch=%C7%F3%B9%BA%2F%D7%AA%C8%C3%BC%EC%CB%F7“,
RegexPattern = @”· <A href=(.*?) target=_blank>(.*?)</a>“,
Encoding = Encoding.Default
});

sites.Add(new Site()
{
Name = “百姓网“,
Url = “http://beijing.baixing.com/huochepiao/?%E8%BD%A6%E6%AC%A1=T189“,
RegexPattern = @”“” ><a href=””/(.*?)””>(.*?)</a></td>“,
Encoding = Encoding.UTF8,
Domain = “http://beijing.baixing.com/“,
Keys = new string[] { “卧“ }
});

sites.Add(new Site()
{
Name = “百姓网“,
Url = “http://beijing.baixing.com/huochepiao/?%E8%BD%A6%E6%AC%A1=T5“,
RegexPattern = @”“” ><a href=””/(.*?)””>(.*?)</a></td>“,
Encoding = Encoding.UTF8,
Domain = “http://beijing.baixing.com/“,
Keys = new string[] { “卧“ }
});

sites.Add(new Site()
{
Name = “酷讯网“,
Url = “http://huoche.kuxun.cn/zhuanrang-checi-beijing-T189.html?type=1“,
RegexPattern = @”<span class=””col_11 left””><a target=””_blank”” href=””(.*)””>(.*)</a>“,
Encoding = Encoding.UTF8
});

sites.Add(new Site()
{
Name = “酷讯网“,
Url = “http://huoche.kuxun.cn/zhuanrang-checi-beijing-T5.html?type=1“,
RegexPattern = @”<span class=””col_11 left””><a target=””_blank”” href=””(.*)””>(.*)</a>“,
Encoding = Encoding.UTF8
});

sites.Add(new Site()
{
Name = “酷讯网“,
Url = “http://huoche.kuxun.cn/zhuanrang-checi-beijing-k185.html?type=1“,
RegexPattern = @”<span class=””col_11 left””><a target=””_blank”” href=””(.*)””>(.*)</a>“,
Encoding = Encoding.UTF8
});

sites.Add(new Site()
{
Name = “清华网“,
Url = “http://www.newsmth.net/bbsbfind.php?q=1&board=Ticket&title=T189&title3=%C7%F3&dt=1“,
RegexPattern = @”<a href=””(bbscon.php.*)””>(.*)</a>“,
Encoding = Encoding.Default,
Domain = “http://www.newsmth.net/“
});

sites.Add(new Site()
{
Name = “清华网“,
Url = “http://www.newsmth.net/bbsbfind.php?q=1&board=Ticket&title=K185&title3=%C7%F3&dt=1“,
RegexPattern = @”<a href=””(bbscon.php.*)””>(.*)</a>“,
Encoding = Encoding.Default,
Domain = “http://www.newsmth.net/“
});

results = new HashSet<string>();

isFirstRound = true;

wc = new WebClient();
wc.Encoding = sites[index].Encoding;

wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(wc_DownloadStringCompleted);
wc.DownloadStringAsync(new Uri(sites[index].Url));

int order;
while (int.TryParse(Console.ReadLine(), out order))
{
OpenLink(results.ElementAt(order – 1));
Console.ForegroundColor = ConsoleColor.Green;
}
}

static void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
int i = 0;

MatchCollection mc = Regex.Matches(e.Result, sites[index].RegexPattern);
foreach (Match m in mc)
{
if (m.Success)
{
string result = sites[index].Domain + m.Groups[1].Value;
string content = m.Groups[2].Value;
if (!results.Contains(result))
{
bool isContainKey = true;
if (sites[index].Keys != null)
{
foreach (string key in sites[index].Keys)
{
if (!content.Contains(key))
{
isContainKey = false;
break;
}
}
}

if (!isContainKey)
continue;

results.Add(result);

Console.ForegroundColor = isFirstRound ? ConsoleColor.Gray : ConsoleColor.White;

Console.WriteLine(“{0} <{1}>  {2}.  {3}“, DateTime.Now.ToShortTimeString(), sites[index].Name, results.Count, m.Groups[2].Value);

if (!isFirstRound)
{
OpenLink(result);
}
}
}

if (i++ > sites[index].Numbers – 2)
break;
}

Thread.Sleep(1000);

index = index + 1;
if (index == sites.Count)
{
index = 0;

if (isFirstRound)
isFirstRound = false;
}

wc.Encoding = sites[index].Encoding;
wc.DownloadStringAsync(new Uri(sites[index].Url));
}

static void OpenLink(string url)
{
Process.Start(url, “_blank“);
}
}

public class Site
{
//站点名称
public string Name { get; set; }
//站点的网址
public string Url { get; set; }
//正则表达式
public string RegexPattern { get; set; }
//编码
public Encoding Encoding { get; set; }
//网站名称
public string Domain { get; set; }
//包含关键字
public string[] Keys { get; set; }
//取前面多少条
public int Numbers { get; set; }

public Site()
{
this.Numbers = 3;
}
}
}