/// <summary>
/// 获取一只携带完整信息的爬虫
/// </summary>
/// <param name="Spider"></param>
/// <returns></returns>
async public Task<SchoolInfoSpider> GetSpiderByName(SchoolInfoSpider Spider)
{
string content = await WebMsg(Spider);
if (content == null) //网络故障, 没有获取到网页
{
Spider.Tag = 1;
}
else //网络正常
{
if (Spider.Url == "http://bjtu.edu.cn") //学校
{
int start = content.IndexOf("输入您所要查找的关键词");
int end = content.LastIndexOf("allowScriptAccess");
var source = content.Substring(start, end - start);
Spider.MC = Regex.Matches(source, Spider.RegexStr, RegexOptions.Singleline);
if (Spider.MC.Count >= 1) // 万一学校网页变化
{
AddResultNotFulllink(Spider);
}
else
Spider.Tag = 2; //学校网页变化正则无法匹配
}
else if (Spider.Url != "http://scit.bjtu.edu.cn") //正常学院
{
Spider.MC = Regex.Matches(content, Spider.RegexStr, RegexOptions.Singleline);
if (Spider.MC.Count >= 1) // 万一学校网页变化
{
AddResultFullLink(Spider);
}
else
Spider.Tag = 2; //学校网页变化正则无法匹配
}
else //就是你了，计算机学院！
{
int start, end;
if (Spider.Name == "计算机本科生")
{
start = content.IndexOf("本科生通知控件");
end = content.LastIndexOf("本科生通知面板结束");
}
else
{
start = content.IndexOf("研究生通知控件");
end = content.LastIndexOf("研究生通知面板结束");
}
string source = content.Substring(start, end - start);
Spider.MC = Regex.Matches(source, Spider.RegexStr, RegexOptions.Singleline);
if (Spider.MC.Count >= 1) // 万一学校网页变化
{
AddResultScitLink(Spider);
}
else
Spider.Tag = 2; //学校网页变化正则无法匹配
}
}
return Spider;
}
/// <summary>
/// 获取网页源代码
/// </summary>
/// <param name="sis"></param>
/// <returns></returns>
async public Task<string> WebMsg(SchoolInfoSpider sis)
{
try
{
using (HttpClient client = new HttpClient(new HtmlTextHandler()))
{
string contentOfWeb = await client.GetStringAsync(sis.Url);
return contentOfWeb;
}
}
catch (Exception e)
{
return null;
}
}
/// <summary>
/// 将爬虫信息添加完整, 给计算机学院使用, 日了狗了, 一个学院折腾我一天
/// </summary>
/// <param name="sis"></param>
private void AddResultScitLink(SchoolInfoSpider sis)
{
//string pattern = "&";
foreach (Match mcItem in sis.MC)
{
sis.TimeList.Add(mcItem.Groups["time"].ToString());
sis.LinkList.Add(sis.ExtraUrl + mcItem.Groups["link"].ToString().Replace("&", "&"));
sis.ChineseCharList.Add(mcItem.Groups["hanzi"].ToString());
}
}
/// <summary>
/// 将爬虫信息添加完整, 给时间与链接各自独立情况使用
/// </summary>
/// <param name="sis">爬虫</param>
private void AddResultFullLink(SchoolInfoSpider sis)
{
foreach (Match mcItem in sis.MC)
{
sis.TimeList.Add(mcItem.Groups["time"].ToString());
sis.LinkList.Add(sis.ExtraUrl + mcItem.Groups["link"].ToString());
sis.ChineseCharList.Add(mcItem.Groups["hanzi"].ToString());
}
}
/// <summary>
/// 将爬虫信息添加完整, 给时间包含在链接里面的情况使用
/// </summary>
/// <param name="sis">爬虫</param>
private void AddResultNotFulllink(SchoolInfoSpider sis)
{
foreach (Match mcItem in sis.MC)
{
sis.FrontLinkList.Add(mcItem.Groups["frontlink"].ToString());
sis.TimeList.Add(mcItem.Groups["time"].ToString());
sis.BackLinkList.Add(mcItem.Groups["backlink"].ToString());
sis.LinkList.Add(sis.FrontLinkList.Last() + sis.TimeList.Last() + sis.BackLinkList.Last());
sis.ChineseCharList.Add(mcItem.Groups["hanzi"].ToString());
}
}
/// <summary>
/// 经管学院
/// </summary>
/// <returns></returns>
public SchoolInfoSpider Sem1()
{
SchoolInfoSpider Spider = new SchoolInfoSpider();
Spider.Url = "http://sem.bjtu.edu.cn/boardmore_v3.0.asp?selectclass=%BD%CC%D1%A7%BF%C6&partFlag=true";
Spider.ExtraUrl = "http://sem.bjtu.edu.cn/";
Spider.RegexStr = "(?<link>boardread.*?id=\\d{5})\".*?title=\"(?<hanzi>.*?)\".*?news_items_time\"[>](?<time>.*?)[<]/div[>]";
Spider.Encoding = "GB2312";
return Spider;
}
/// <summary>
/// 计算机学院研究生信息
/// </summary>
/// <returns></returns>
public SchoolInfoSpider Scit7()
{
SchoolInfoSpider Scit7Spider = new SchoolInfoSpider();
Scit7Spider.Url = "http://scit.bjtu.edu.cn";
Scit7Spider.ExtraUrl = "http://scit.bjtu.edu.cn/";
Scit7Spider.RegexStr = "title=\"(?<hanzi>.*?)\".*?\"(?<link>ShowNews.*?page=7).*?[[](?<time>.*?)[]]";
Scit7Spider.Encoding = "UTF-8";
return Scit7Spider;
}
/// <summary>
/// 电信学院研究生信息
/// </summary>
/// <returns></returns>
public SchoolInfoSpider Eaie47()
{
SchoolInfoSpider Spider = new SchoolInfoSpider();
Spider.Name = "电信研究生";
Spider.Url = "http://eaie.bjtu.edu.cn/list.php?cid=47";
Spider.ExtraUrl = "http://eaie.bjtu.edu.cn/";
Spider.RegexStr = "[<]span[>][(](?<time>.*?)[)][<]/span[>].*?(?<link>view.*?cid=47).*?title=\"(?<hanzi>.*?)\"[>]";
Spider.Encoding = "utf-8";
return Spider;
}
/// <summary>
/// 运输学院研究生信息
/// </summary>
/// <returns></returns>
public SchoolInfoSpider Trans36()
{
SchoolInfoSpider Spider = new SchoolInfoSpider();
Spider.Name = "运输研究生";
Spider.Url = "http://trans.bjtu.edu.cn/list.php?cid=36";
Spider.ExtraUrl = "http://trans.bjtu.edu.cn/";
Spider.RegexStr = "(?<link>view.*?cid=36).*?title=\"(?<hanzi>.*?)\".*?[<]span[>](?<time>.*?)[<]/span[>]";
Spider.Encoding = "utf-8";
return Spider;
}
/// <summary>
/// 学校信息
/// </summary>
/// <returns></returns>
public SchoolInfoSpider BJTU()
{
SchoolInfoSpider Spider = new SchoolInfoSpider();
Spider.Name = "学校";
Spider.Url = "http://bjtu.edu.cn";
Spider.ExtraUrl = "";
Spider.RegexStr = "(?<frontlink>http://news.bjtu.edu.cn/.*?/)(?<time>[0-9].*?)(?<backlink>/.*?html).*?vTitle=\'(?<hanzi>.{5,30})\'";
Spider.Encoding = "gb2312";
return Spider;
}
