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"));
}
}
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");
}
}