本文整理汇总了C#中System.HtmlHelper.GetNodesByXPath方法的典型用法代码示例。如果您正苦于以下问题：C# HtmlHelper.GetNodesByXPath方法的具体用法？C# HtmlHelper.GetNodesByXPath怎么用？C# HtmlHelper.GetNodesByXPath使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.HtmlHelper的用法示例。
在下文中一共展示了HtmlHelper.GetNodesByXPath方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetDetailHtml
public override void GetDetailHtml(Product product, Site site)
{
loginfo.Location = this.GetType().Name + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
loginfo.Url = product.Url;
loginfo.KeyInfo = site.SiteName;
HtmlHelper html = new HtmlHelper(product.Html);
//get product detail nodes
var product_node = html.GetNodeByXPath("//div[@class='products']/div[@class='product']/div[@class='desktop']");
//get product description
var description_nodes = html.GetNodesByXPath("./div[@class='bottom']/div[1]/div[1]/div[@class='description open-sans-regular']/*",product_node);
string description = "";
if (description_nodes.Count > 0)
{
foreach (var sellpoint_node in description_nodes)
{
if (sellpoint_node.Equals(description_nodes.First()))
{
description += sellpoint_node.FirstChild.InnerText.Trim();
}
else
{
description += "|" + sellpoint_node.FirstChild.InnerText.Trim();
}
}
}
//get sell point
var sellpoint_nodes = html.GetNodesByXPath("./div[@class='bottom']/div[1]/div[1]/div[@class='bullets open-sans-regular']/div", product_node);
string sellpoints = "";
if(sellpoint_nodes.Count>0)
{
foreach(var sellpoint_node in sellpoint_nodes)
{
if (sellpoint_node.Equals(sellpoint_nodes.First()))
{
sellpoints += sellpoint_node.FirstChild.InnerText.Trim();
}
else
{
sellpoints += "|" + sellpoint_node.FirstChild.InnerText.Trim();
}
}
}
product.Description = description;
product.SellPoint = sellpoints;
}示例2: GetMinFreeShipping
public void GetMinFreeShipping(Site site)
{
logInfo logInfo = new logInfo();
logInfo.Location = this.GetType().Name + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
//get the minimun purchase amount for free shipping from it's F&Q page
string url = "https://jet.com/help-center/shipping-and-returns";
HttpItem httpItem = new HttpItem();
httpItem.Cookie = string.Empty;
httpItem.Method = "GET";
httpItem.Header = null;
httpItem.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
httpItem.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36";
//httpItem.Timeout = 60000 * 5;
httpItem.URL = url;
HttpHelper httpHelper = new HttpHelper();
HttpResult httpResult = null;
try
{
httpResult = httpHelper.GetHtml(httpItem);
if (httpResult == null)
{
logInfo.KeyInfo = "Remote HTML is null (timeout etc.)";
Log4Helper.WarningLog(logInfo);
}
else
{
if (httpResult.StatusCode != System.Net.HttpStatusCode.OK)
{
logInfo.KeyInfo = "Remote HTML is null (timeout etc.)";
Log4Helper.WarningLog(logInfo);
}
else
{
string content = httpResult.Html;
if (content.Length < 200)
{
return;
}
HtmlHelper html = new HtmlHelper(content);
var fq_node = html.GetNodeByXPath("//div[@class='page_content']/h1");
var ans = html.GetNodesByXPath("following-sibling::p", fq_node);
Regex minfreeshipping_pattern = new Regex(@"orders\sover\s\$(\d+)");
Regex shippingfee_pattern = new Regex(@"fixed\sshipping\sfee\sof\s\$(\d+(\.\d+)?)");
int match_min = 0;
int match_fee = 0;
foreach(HtmlNode a in ans)
{
if(minfreeshipping_pattern.Match(a.InnerText).Success)
{
min_shipping = Convert.ToSingle(minfreeshipping_pattern.Match(a.InnerText).Groups[1].Value);
match_min = 1;
}
if (shippingfee_pattern.Match(a.InnerText).Success)
{
fee_shipping = Convert.ToSingle(shippingfee_pattern.Match(a.InnerText).Groups[1].Value);
match_fee = 1;
}
if(match_min==1&&match_fee==1)
{
continue;
}
}
}
}
}
catch (Exception ex)
{
logInfo.KeyInfo = "Could not get remote HTML";
Log4Helper.ErrorLog(logInfo);
}
}示例3: ListItem
public override void ListItem(List<Product> products, string keyword, Site site, HttpResult httpResult)
{
string content = httpResult.Html; //获取HTML
this.GetMinFreeShipping(site);
try
{
HtmlHelper html = new HtmlHelper(content);
HtmlNodeCollection htmlNodeCollection = html.GetNodesByXPath("/div[1]/div[2]/div[@class='product desktop not_mobile']");
if (htmlNodeCollection == null) { return; }
foreach (var htmlNode in htmlNodeCollection)
{
//get the url of detail page
var a = htmlNode.FirstChild;
string href = a.Attributes["href"].Value;
href = Regex.Split(href, "/ref=", RegexOptions.IgnoreCase)[0];
href = "https://jet.com" + href;
//get nodes under a that contain product's information
var NodeUnder_a = a.ChildNodes;
//product image url
var img_node = NodeUnder_a[0];
string img_url = img_node.Attributes["style"].Value;
Regex im = new Regex("url\\('(.*)'\\)");
Match m = im.Match(img_url);
if (!m.Success)
{ continue; }
img_url = m.Groups[1].ToString();
//product's title
var title_node = NodeUnder_a[3];
if (title_node == null) { continue; }
string title = title_node.InnerText;
//prodcut's price
var price_node = NodeUnder_a[4];
if (price_node == null) { continue; }
string price = html.GetNodeByXPath("./div/span[@class='open-sans-regular']", price_node).InnerText;
price = price.Replace("$", "").Trim();
Product product = new Product();
product.Name = title;
product.Url = href;
product.Img = img_url;
product.Price = Convert.ToSingle(price);
if (product.Price < 1 || string.IsNullOrWhiteSpace(product.Name) || string.IsNullOrWhiteSpace(product.Img) || string.IsNullOrWhiteSpace(product.Url)
|| !ValidUrl(product.Url) || !ValidUrl(product.Img))
{
continue;
}
if(product.Price > min_shipping)
{
product.Shipping = 1;
product.ShippingFee = 0;
}
else
{
product.Shipping = 1;
product.ShippingFee = fee_shipping;
}
product.Created = GetTimeStamp();
this.GetDetail(product, site);
products.Add(product);
}
}
catch (Exception ex)
{
logInfo logInfo = new logInfo();
logInfo.KeyInfo = site.SiteName + " " + keyword + " ListItem: " + ex.Message;
logInfo.Location = this.GetType().Name + "." + System.Reflection.MethodBase.GetCurrentMethod().Name;
Log4Helper.ErrorLog(logInfo);
}
}