private static void unitTest()
{
var doc = XPathAnalyzer.GetHtmlDocument(url);
var datas = XPathAnalyzer.GetDataFromURL(url);
var properties = doc.DocumentNode.SearchPropertiesSmartList();
var firstOrDefault = properties.FirstOrDefault();
datas = doc.DocumentNode.GetDataFromXPath(firstOrDefault.CrawItems).ToList();
}
public void XPathTest()
{
var doc = XPathAnalyzer.GetHtmlDocument(url);
Assert.IsTrue(doc != null);
var datas = XPathAnalyzer.GetDataFromURL(url);
Assert.IsTrue(datas != null && datas.Count > 10);
var properties = doc.DocumentNode.SearchPropertiesSmartList();
Assert.IsTrue(properties.Any());
var firstOrDefault = properties.FirstOrDefault();
datas = doc.DocumentNode.GetDataFromXPath(firstOrDefault.CrawItems).ToList();
Assert.IsTrue(datas != null && datas.Count > 10);
}
public List <FreeDocument> CrawlData(string url, out HtmlDocument doc, out HttpStatusCode code, string post = null)
{
var mc = extract.Matches(url);
Dictionary <string, string> paradict = null;
foreach (Match m in mc)
{
if (paradict == null)
{
paradict = XPathAnalyzer.ParseUrl(URL);
}
if (paradict == null)
{
break;
}
var str = m.Groups[1].Value;
if (paradict.ContainsKey(str))
{
url = url.Replace(m.Groups[0].Value, paradict[str]);
}
}
var content = helper.GetHtml(Http, out code, url, post);
doc = new HtmlDocument();
if (!HttpHelper.IsSuccess(code))
{
XLogSys.Print.WarnFormat("HTML Fail,Code:{0}，url:{1}", code, url);
return(new List <FreeDocument>());
}
doc.LoadHtml(content);
var datas = CrawlData(doc);
if (datas.Count == 0)
{
XLogSys.Print.DebugFormat("HTML extract Fail,url:{0}", url);
}
return(datas);
}
private void AddNewItem(bool isAlert = true)
{
var path = SelectXPath;
var rootPath = RootXPath;
if (!string.IsNullOrEmpty(rootPath))
{
//TODO: 当XPath路径错误时，需要捕获异常
HtmlNode root = null;
try
{
root = HtmlDoc.DocumentNode.SelectSingleNodePlus(rootPath, RootFormat);
}
catch (Exception)
{
XLogSys.Print.Error(string.Format(GlobalHelper.Get("key_662"), RootXPath, RootFormat));
}
if (!(root != null).SafeCheck(string.Format(GlobalHelper.Get("key_663"), RootFormat, RootXPath)))
{
return;
}
root = HtmlDoc.DocumentNode.SelectSingleNodePlus(rootPath, RootFormat)?.ParentNode;
HtmlNode node = null;
if (
!ControlExtended.SafeInvoke(() => HtmlDoc.DocumentNode.SelectSingleNodePlus(path, SearchFormat),
ref node,
LogType.Info, GlobalHelper.Get("key_664"), true))
{
return;
}
if (!(node != null).SafeCheck(GlobalHelper.Get("key_665")))
{
return;
}
if (!node.IsAncestor(root) && isAlert)
{
if (
MessageBox.Show(GlobalHelper.Get("key_666"), GlobalHelper.Get("key_99"), MessageBoxButton.YesNo) ==
MessageBoxResult.No)
{
return;
}
}
string attr = "";
string attrValue = "";
XPathAnalyzer.GetAttribute(path, out attr, out attrValue);
if (SearchFormat == SelectorFormat.XPath)
{
path = XPath.TakeOffPlus(node.XPath, root.XPath);
if (attr != "")
{
path += "/@" + attr + "[1]";
}
}
}
if (CrawlItems.FirstOrDefault(d => d.Name == SelectName) == null ||
MessageBox.Show(GlobalHelper.Get("add_column_sure"), GlobalHelper.Get("key_99"), MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
var item = new CrawlItem {
XPath = path, Name = SelectName, SampleData1 = SelectText
};
item.Format = SearchFormat;
CrawlItems.Add(item);
SelectXPath = "";
SelectName = "";
XLogSys.Print.Info(GlobalHelper.Get("key_668"));
}
}
public List<FreeDocument> CrawlData(string url, out HtmlDocument doc, out HttpStatusCode code,
string post = null)
{
var mc = extract.Matches(url);
Dictionary<string, string> paradict = null;
foreach (Match m in mc)
{
if (paradict == null)
paradict = XPathAnalyzer.ParseUrl(URL);
if (paradict == null)
break;
var str = m.Groups[1].Value;
if (paradict.ContainsKey(str))
{
url = url.Replace(m.Groups[0].Value, paradict[str]);
}
}
if (!string.IsNullOrEmpty(Crawler))
{
var crawler =
SysProcessManager.CurrentProcessCollections.FirstOrDefault(d => d.Name == Crawler) as SmartCrawler;
var header = crawler?.Http.GetHeaderParameter();
if (header != null)
{
var myheader = Http.GetHeaderParameter();
object value;
if (header.TryGetValue("Cookie", out value))
{
myheader["Cookie"]= value.ToString();
}
if (header.TryGetValue("Host", out value))
{
myheader["Host"] = value.ToString();
}
if (header.TryGetValue("Referer", out value))
{
myheader["Referer"] = value.ToString();
}
Http.Parameters = HttpItem.HeaderToString(myheader);
}
}
var content = helper.GetHtml(Http, out code, url, post);
doc = new HtmlDocument();
if (!HttpHelper.IsSuccess(code))
{
XLogSys.Print.WarnFormat("HTML Fail,Code:{0}，url:{1}", code, url);
return new List<FreeDocument>();
}
doc.LoadHtml(content);
var datas = CrawlData(doc);
if (datas.Count == 0)
{
XLogSys.Print.DebugFormat("HTML extract Fail，url:{0}", url);
}
return datas;
}
public string GetHtml(string url, out HttpStatusCode code,
string post = null)
{
string result = "";
HttpHelper.HttpResponse response;
code = HttpStatusCode.NotFound;
if (Regex.IsMatch(url, @"^[A-Z]:\\")) //本地文件
{
if (File.Exists(url))
{
result = File.ReadAllText(url, AttributeHelper.GetEncoding(this.Http.Encoding));
code = HttpStatusCode.Accepted;
}
}
else
{
var mc = extract.Matches(url);
if (SysProcessManager == null)
{
code = HttpStatusCode.NoContent;
return("");
}
var crawler = this.SysProcessManager.GetTask <SmartCrawler>(ShareCookie.SelectItem);
if (crawler != null)
{
Http.ProxyIP = crawler.Http.ProxyIP;
if (Http.Parameters != crawler.Http.Parameters)
{
var cookie = crawler.Http.GetHeaderParameter().Get <string>("Cookie");
if (string.IsNullOrWhiteSpace(cookie) == false)
{
Http.SetValue("Cookie", cookie);
}
}
}
Dictionary <string, string> paradict = null;
foreach (Match m in mc)
{
if (paradict == null)
{
paradict = XPathAnalyzer.ParseUrl(URL);
}
if (paradict == null)
{
break;
}
var str = m.Groups[1].Value;
if (paradict.ContainsKey(str))
{
url = url.Replace(m.Groups[0].Value, paradict[str]);
}
}
response = helper.GetHtml(Http, url, post).Result;
result = response.Html;
code = response.Code;
}
result = JavaScriptAnalyzer.Decode(result);
if (IsSuperMode)
{
result = JavaScriptAnalyzer.Parse2XML(result);
}
return(result);
}
private void AddNewItem(bool isAlert = true)
{
var path = SelectXPath;
var rootPath = RootXPath;
if (!string.IsNullOrEmpty(rootPath))
{
//TODO: 当XPath路径错误时，需要捕获异常
HtmlNode root = null;
try
{
root = HtmlDoc.DocumentNode.SelectSingleNodePlus(rootPath, RootFormat);
}
catch (Exception ex)
{
XLogSys.Print.Error($"{RootXPath} 不能被识别为正确的{RootFormat}表达式，请检查");
}
if (!(root != null).SafeCheck($"使用当前父节点{RootFormat} {RootXPath}，在文档中找不到任何父节点"))
{
return;
}
root = HtmlDoc.DocumentNode.SelectSingleNodePlus(rootPath, RootFormat)?.ParentNode;
HtmlNode node = null;
if (
!ControlExtended.SafeInvoke(() => HtmlDoc.DocumentNode.SelectSingleNodePlus(path, SearchFormat),
ref node,
LogType.Info, "检查子节点XPath正确性", true))
{
return;
}
if (!(node != null).SafeCheck("使用当前子节点XPath，在文档中找不到任何子节点"))
{
return;
}
if (!node.IsAncestor(root) && isAlert)
{
if (
MessageBox.Show("当前XPath所在节点不是父节点的后代，请检查对应的XPath，是否依然要添加?", "提示信息", MessageBoxButton.YesNo) ==
MessageBoxResult.No)
{
return;
}
}
string attr = "";
string attrValue = "";
XPathAnalyzer.GetAttribute(path, out attr, out attrValue);
if (SearchFormat == SelectorFormat.XPath)
{
path = XPath.TakeOffPlus(node.XPath, root.XPath);
if (attr != "")
{
path += "/@" + attr + "[1]";
}
}
}
if (CrawlItems.FirstOrDefault(d => d.Name == SelectName) == null ||
MessageBox.Show("已经存在同名的属性，是否依然添加?", "提示信息", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
var item = new CrawlItem {
XPath = path, Name = SelectName, SampleData1 = SelectText
};
item.Format = SearchFormat;
CrawlItems.Add(item);
SelectXPath = "";
SelectName = "";
XLogSys.Print.Info("成功添加属性");
}
}
