private static bool AuthurFile(string url, string searchForlder)
{
using (HtmlDownloader downloader = new HtmlDownloader(url, Properties.Resources.FileFilter))
{
if (downloader.IsLocalFile)
{
//文件去重
string[] result = Directory.GetFiles(searchForlder, Path.GetFileName(url), SearchOption.AllDirectories);
if (result != null && result.Length > 0)
{
return(false);
}
}
}
return(true);
}
private void btnSpider_Click(object sender, EventArgs e)
{
_baseForlder = txtBasePath.Text;
string[] rootUrl = (AttachControl as IHtmlSpider).RootUrls;;
if (string.IsNullOrEmpty(_baseForlder) || rootUrl == null || rootUrl.Length == 0)
{
return;
}
SetControlState(false);
MyConsole.AppendLine("爬取程序正在启动...");
//获取参数
MyConsole.AppendLine("开始收集爬虫需要的参数>>>");
_limitedCount = int.Parse(txtNum.Text);
pnlRight.Controls.Add(_chart); //显示报表控件
MyConsole.AppendSign();
MyConsole.AppendLine("开始爬取..");
_startTime = DateTime.Now; //记录爬取初始时间
UrlManager.BaseForlder = _baseForlder;
UrlManager.LimitedCount = _limitedCount;
UrlManager.AddNewUrls(rootUrl[0], rootUrl); //添加根地址
//设置爬虫的线程个数
for (int i = 0; i < txtThreadNum.Value; i++)
{
//开始爬取
Thread spiderThead = new Thread(new ThreadStart(delegate
{
while (true)
{
if (_limitedCount != 0 && _totalCount > _limitedCount)
{
continue;
}
if (UrlManager.HasUrl)
{
string url = UrlManager.PopOneUrl();
try
{
//初始化爬虫下载器
HtmlDownloader download = new HtmlDownloader(url, Properties.Resources.FileFilter, Encoding.UTF8);
download.OnDownloadChanged += download_OnDownloadChanged;
download.OnDownloadCompleted += download_OnDownloadCompleted;
download.OnDownloadErrored += download_OnDownloadErrored;
if (download.HasResponse)
{
MyConsole.AppendLine(string.Format("开始爬取Url:{0},时间:{1}", url, DateTime.Now));
download.DownloadAsync();
UpdateGridView(url, SpiderState.爬取中);
}
else
{
MyConsole.AppendLine(string.Format("爬取Url:{0}失败,异常原因:远程链接失败,时间:{1}", url, DateTime.Now));
UpdateGridView(url, SpiderState.失败);
}
}
catch (Exception ex)
{
MyConsole.AppendLine(string.Format("爬取Url:{0}失败,异常原因:{1},时间:{2}", url, ex.Message, DateTime.Now));
UpdateGridView(url, SpiderState.失败);
}
}
}
}));
spiderThead.Name = "SpiderThead" + i;
spiderThead.IsBackground = true;
spiderThead.Start();
}
}
