private void webBrowser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
if (e.Url != this.webBrowser.Document.Url)
{
return;
}
string encode = this.webBrowser.Document.Encoding;
StreamReader sr = new StreamReader(this.webBrowser.DocumentStream, Encoding.GetEncoding(encode));
string html = sr.ReadToEnd();
//Html2Article.LimitCount = 100;
//Html2Article.Depth = 8;
// 设置是否使用正文追加模式
Html2Article.AppendMode = this.appendCheckBox.CheckState == CheckState.Checked;
Stopwatch sw = new Stopwatch();
sw.Start();
// 将Html解析为Article结构化数据
Article article = Html2Article.GetArticle(html);
sw.Stop();
msgLabel.Text = "提取耗时：" + Environment.NewLine + sw.ElapsedMilliseconds + "毫秒";
this.publishDateTextBox.Text = article.PublishDate.ToString();
this.titleTextBox.Text = article.Title;
this.contentTextBox.Text = article.Content;
string articleHtml = UrlUtility.FixUrl(this.urlTextBox.Text, article.ContentWithTags);
this.contentWebBrowser.DocumentText = articleHtml;
ResetState();
}
public string GetChapterContent(NVChapter nVChapter)
{
var html = HttpHelper.GetString(nVChapter.Link, baseEncoding);
Article article = Html2Article.GetArticle(html);
var cSb = new StringBuilder();
cSb.AppendLine();
cSb.Append(nVChapter.Title).AppendLine();
cSb.Append(article.Content).AppendLine();
return(cSb.ToString());
}
public string getUrl(string url)
{
HttpHelper http = new HttpHelper();
var result = http.GetHtml(new HttpItem()
{
URL = url,
Method = "GET"
});
var client = NSoup.NSoupClient.Parse(result.Html);
var h2 = Html2Article.GetArticle(result.Html);
var html = JsonConvert.SerializeObject(new { content = h2.Content, title = h2.Title });
return(html);
}
public async void GenerateWebRequestAsync(WorkManage wm, int depth, IndexManager indexmanager)
{
try
{
webRequest = (HttpWebRequest)WebRequest.Create(RequestUri); //创建Request实例
webRequest.Method = "GET"; //方法为GET
webRequest.KeepAlive = true; //持续型链接
webRequest.Timeout = 100; //超时值为100ms
webResponse = (HttpWebResponse)await webRequest.GetResponseAsync(); //获取当前请求的响应
ContentStream = webResponse.GetResponseStream(); //获取响应的字节流
string html = GetContent(); //转化为HTML文本
GetLinks getLinks = new GetLinks(html);
Article article = new Article();
Html2Article.AppendMode = false;
Html2Article.Depth = 80;
article = Html2Article.GetArticle(html);
wm.sum++;
indexmanager.AddIndex(article.Title, article.Content, RequestUri);
if (depth < wm.Depth)
{
foreach (string uri in getLinks.GetUris())
{
if (!wm.unfinisheduri.ContainsKey(uri))
{
lock (wm.unfinisheduri)
{
wm.unfinisheduri.Add(uri, depth + 1);
}
}
}
}
webRequest.Abort();
webResponse.Close();
}
catch
{
}
//Thread.Sleep(timeSpan);
//ThreadPool
}
static void Main(string[] args)
{
// 初始化log4net
log4net.Config.XmlConfigurator.Configure(new FileInfo(Path.Combine(Application.StartupPath, "Config", "log4net.config")));
FrmSettings frmSettings = new FrmSettings();
if (frmSettings.ShowDialog() == DialogResult.OK)
{
var settings = frmSettings.Settings;
var logger = Log4netFactory.CreateLogger();
//var unhandledLinks = WebPageDao.GetUnhandledLinks();
Spider spider = new Spider(settings, logger, null);
spider.AddUrlEvent += addUrlArgs =>
{
//if (WebPageDao.IsIdExisted(MD5Helper.GetMD5HashCode(addUrlArgs.Url)))
// return false;
//WebPageDao.SaveOrUpdateWebPage(addUrlArgs.Url, addUrlArgs.Depth);
Console.WriteLine(addUrlArgs.Title + " - " + addUrlArgs.Url);
return(true);
};
spider.DataReceivedEvent += receivedArgs =>
{
//WebPage webPage = ArticleParse.GetArticleWebPage(receivedArgs.Html);
//webPage.Id = MD5Helper.GetMD5HashCode(receivedArgs.Url);
//webPage.Url = receivedArgs.Url;
//webPage.Depth = receivedArgs.Depth;
//webPage.InsertDate = DateTime.Now;
//webPage.Status = 1;
//WebPageDao.SaveOrUpdateWebPage(webPage);
MessageBox.Show(Html2Article.GetArticle(receivedArgs.Html));
};
spider.Crawl();
}
}
private void StartSpider(string domian, string keyword)
{
if (spider != null)
{
spider.Stop();
}
var settings = new Settings();
settings.InitSeeds = domian;
settings.LockHost = true;
settings.KeepCookie = true;
settings.Threads = 5;// 爬取线程数
settings.UserAgent = "Mozilla/5.0 (Windows NT 6.2; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36";
settings.Timeout = 1000;
settings.CrawlDepth = -1; // 爬取深度，-1表示遍历整个网站
settings.LimitSpeed = false; // 是否智能控制网速，选否则会全速下载网页
Html2Article.AppendMode = true;
Html2Article.LimitCount = 50;
Html2Article.Depth = 10;
spider = new Spider(settings, null, null);
//System.Diagnostics.Debug.WriteLine(spider);//////////////////***********
spider.AddUrlEvent += addUrlArgs =>
{
return(true);
};
spider.DataReceivedEvent += receivedArgs =>
{
//System.Diagnostics.Debug.WriteLine(receivedArgs.Url);
if (URLStackOperate(POPALL, null).IndexOf(receivedArgs.Url) == -1) // 属于新链接
{
Article article = Html2Article.GetArticle(receivedArgs.Html);
if (article.Content.IndexOf(keyword) != -1) // 文章包含用户输入的关键词
{
if (article.ContentWithTags.IndexOf("img") != -1) // 文章包含图片
{
MatchCollection matches = ImgLinkRegex.Matches(article.ContentWithTags); // 取出所有img链接
foreach (Match match in matches)
{
string img = match.Groups["imgUrl"].Value; // 获得img链接
if (ImagesHtmlCodeStackOperate(POPALL, null, null).IndexOf(img) == -1) // 新图片
{
string HtmlCode = "<div class='grid'>"
+ "<div class='imgholder'>"
+ "<a href='" + receivedArgs.Url + "' target='_blank'>";
if (match.Groups["imgUrl"].Value.IndexOf("http") == 0)
{
HtmlCode += "<img src='" + match.Groups["imgUrl"].Value + "'>";
}
else
{
HtmlCode += "<img src='" + domian + match.Groups["imgUrl"].Value + "'>";
}
HtmlCode += "</a>"
+ "</div>"
//+ "<strong>" + article.Title.Substring(0, 6) + "...</strong>"
//+ "<p>" + article.Content.Substring(0, 20) + "...</p>"
//+ "<div class='meta'>" + domian + "</div>"
+ "</div>";
ImagesHtmlCodeStackOperate(PUSH, HtmlCode, img);
}
}
}
}
}
URLStackOperate(PUSH, receivedArgs.Url);
};
spider.Crawl();
}
public object GetData(string url)
{
DataSaver dataSaver = new DataSaver();
List <Page> docs = new List <Page>();
// 当前需要爬行的链接
List <string> CurrentUrls = new List <string>();
// 已经爬行过的链接
HashSet <string> VisitedUrls = new HashSet <string>();
string[] urlInfo = url.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
string schemaUrl = "http://" + urlInfo[0];
//Uri可能转换失败
try
{
Uri hostUrl = new Uri(schemaUrl);
CurrentUrls.Add(schemaUrl);
string site = string.Empty;
int hasVisited = 0;
int hasUrlsCount = 1;
//如果当前拥有则爬行
while (CurrentUrls.Count > 0)
{
hasVisited++;
HashSet <string> newLinks = new HashSet <string>();
try
{
//2. 获取网页信息
Console.WriteLine(DateTime.Now.ToString() + "[" + Thread.CurrentThread.ManagedThreadId + "]" + ":Visit " + CurrentUrls[0]);
VisitedUrls.Add(CurrentUrls[0]);
bool isGetContentSuc = false;
Html2Article.ArticleDocument document = Html2Article.GetArticle(CurrentUrls[0], ref isGetContentSuc);
if (document != null && document.Content.Length > 10)
{
if (string.IsNullOrEmpty(site))
{
string[] titleArray = document.Title.Split(new char[] { '-', '_' }, StringSplitOptions.RemoveEmptyEntries);
site = titleArray[titleArray.Length - 1];
}
Page page = new Page();
page.Url = CurrentUrls[0];
page.Site = site;
page.Content = document.Content;
page.Title = document.Title;
page.Timestamp = DateTime.Now.ToString();// or UTC
docs.Add(page);
dataSaver.SavePage(ref docs, GetRootFolder() + "\\RawData");
}
//3. 获取新链接
if (document != null)
{
for (int j = 0; j < document.ChildrenLink.Count; j++)
{
try
{
string link = document.ChildrenLink[j];
if (link.Contains("#"))
{
link = link.Substring(0, link.IndexOf("#", System.StringComparison.Ordinal) - 1);
}
if (link.EndsWith("/"))
{
link = link.Substring(0, link.Length - 1);
}
string host = (new Uri(document.ChildrenLink[j])).Host;
if (host == hostUrl.Host && !newLinks.Contains(link) &&
!VisitedUrls.Contains(link))
{
newLinks.Add(link);
VisitedUrls.Add(link);
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
}
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
CurrentUrls.RemoveAt(0);
if (newLinks.Count > 0)
{
CurrentUrls.AddRange(newLinks.ToArray());
hasUrlsCount += newLinks.Count;
}
}
if (docs.Count > 0)
{
dataSaver.SavePage(ref docs, GetRootFolder() + "\\RawData");
docs.Clear();
}
}
catch (Exception exception)
{
Console.WriteLine(exception);
}
return(true);
}
