/// <summary>
/// 爬取子页面的进程
/// </summary>
private static void ThreadGetHtml()
{
html_list.Clear();
HtmlDeepth htmlDeepth = new HtmlDeepth()
{
deepth = 1,
url = mainForm.request_host
};
html_list.Add(htmlDeepth);
while (!stop_download)
{
if (html_list.Count > 0)
{
lock (locker)
{
htmlDeepth = html_list[0];
html_list.RemoveAt(0);
}
mainForm.textBox_HtmlList.Text = html_list.Count.ToString();
string html = GetHtml_v1(htmlDeepth.url, htmlDeepth.deepth);
HttpHelperParse_Html(html, htmlDeepth.deepth);
HttpHelperParse_Images(html);
}
else
{
Thread.Sleep(100);
}
}
}
/// <summary>
/// 获取网页中的子页面链接
/// </summary>
/// <param name="input"></param>
/// <param name="deepth"></param>
private static void HttpHelperParse_Html(string input, int deepth)
{
if (stop_download)
{
mainForm.Finish();
return;
}
//深度超过设定深度，不解析
if (deepth >= mainForm.request_deepth)
{
return;
}
List <AItem> alist = HttpHelper.GetAList(input);
if (alist == null || alist.Count == 0)
{
return;
}
HtmlDeepth htmlDeepth = new HtmlDeepth();
foreach (var item in alist)
{
string href = item.Href;
if (href.Length < 5)
{
continue;
}
//过滤非正常子页面链接
if (href.IndexOf("javascript") != -1 || href.IndexOf("search") != -1 ||
href.IndexOf(".css") != -1 ||
href.IndexOf(".js") != -1)
{
continue;
}
if (href[0] == '/' || href[0] == '.')
{
continue;
}
//判断是否要加前缀
if (href.Substring(0, 3) != "htt" && href.Substring(0, 3) != "www")
{
href = mainForm.html_prefix + href;
}
//如果包含域名，则表示不是站内子页面，不访问
if (href.IndexOf(domain) == -1)
{
continue;
}
//已经访问过的页面
if (already_html.Contains(href))
{
continue;
}
//去掉链接中的双引号和单引号
htmlDeepth.url = href.Replace("\"", "").Replace("\'", "");
htmlDeepth.deepth = deepth + 1;
if (show_html)
{
mainForm.AddContent(htmlDeepth.url);
}
lock (locker)
{
if (!html_list.Contains(htmlDeepth))
{
html_list.Add(htmlDeepth);
}
}
}
}