/// <summary>
/// 解析当前总页数
/// </summary>
/// <param name="content">The content.</param>
/// <returns></returns>
private int ParseAmountPage(string content)
{
if (content == null)
{
return(-1);
}
var navigator = HtmlDocumentHelper.CreateNavigator(content);
var node = navigator.SelectSingleNode(@"//div[@class='jPage']/em");
if (node == null)
{
return(-1);
}
/*
* <div class="jPage">
* <em>共104条记录</em>
* <span>上一页</span>
* <a class="current">1</a>
* <a href="//mall.jd.com/view_search-504028-1000007084-1000007084-0-5-0-0-1-2-24.html?isGlobalSearch=0">2</a>
* <a href="//mall.jd.com/view_search-504028-1000007084-1000007084-0-5-0-0-1-3-24.html?isGlobalSearch=0">3</a>
* <span>...</span>
* <a href="//mall.jd.com/view_search-504028-1000007084-1000007084-0-5-0-0-1-5-24.html?isGlobalSearch=0">5</a>
* <a href="//mall.jd.com/view_search-504028-1000007084-1000007084-0-5-0-0-1-2-24.html?isGlobalSearch=0">下一页</a>
* </div>
*/
var matchResults = Regex.Match(node.Value, @"(?<=共)\d+(?=条记录)");
return(matchResults.Success ? int.Parse(matchResults.Value) : -1);
}
/// <summary>
/// 推荐是不是商品页面
/// </summary>
/// <param name="webContent"></param>
/// <returns></returns>
private bool GuessIsSearchWebContent(string webContent)
{
if (string.IsNullOrEmpty(webContent))
{
return(false);
}
var navigator = HtmlDocumentHelper.CreateNavigator(webContent);
var iterator = navigator.Select(@"//a");
var itemCount = 0;
foreach (XPathNavigator item in iterator)
{
var href = item.GetAttribute(@"href", string.Empty);
if (href == null)
{
continue;
}
if (Regex.IsMatch(href, @"^//item\.jd\.com/\d+\.html", RegexOptions.IgnoreCase))
{
itemCount++;
}
if (itemCount >= 8)
{
return(true);
}
}
return(false);
}
/// <summary>
/// 解析出商品
/// </summary>
/// <param name="htmlSource">The HTML source.</param>
/// <param name="listOnly">仅解析出列表，不解析价格等需要再次访问网络的内容.</param>
/// <returns></returns>
private IResut[] ParseCurrentItems(string htmlSource, bool listOnly = false)
{
/*
#if DEBUG
* htmlSource = "";
* var htmlSources = File.ReadAllLines(@"C:\Users\Administrator\Desktop\htmlSource.txt",System.Text.Encoding.UTF8);
* for (int i=0;i< htmlSources.Length;i++)
* {
* htmlSource += htmlSources[i];
* }
*
#endif
*/
const string SkuIdKey = "ProductSku";
var resultList = new List <IResut>();
var navigator = HtmlDocumentHelper.CreateNavigator(htmlSource);
var iterator = navigator.Select(@"//ul/li");
foreach (XPathNavigator item in iterator)
{
var title = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jDesc']/a/text()");
var href = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jDesc']//@href");
if (string.IsNullOrEmpty(title))
{
title = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jTitle']/a/text()");
href = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jTitle']//@href");
}
var imgSrc = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jPic']//@original");
var skuMatchResults = Regex.Match(href, @"(?<=/)\d+(?=\.html)");
var sku = skuMatchResults.Success ? skuMatchResults.Value : string.Empty;
if (string.IsNullOrEmpty(sku))
{
continue;
}
// 评价数据
var comments = ParseComments(item);
IResut resut = new Resut();
resut[SkuIdKey] = sku;
resut["ShopId"] = ShopUrl;
resut["ProductName"] = title;
resut["ProductUrl"] = href;
resut["ProductImage"] = imgSrc;
resut["ProductComments"] = comments;
resultList.Add(resut);
}
if (!listOnly)
{
this.UpdateResultsPrices(resultList, SkuIdKey);
}
return(resultList.ToArray());
}
/// <summary>
/// 解析当前页的所有产品信息
/// </summary>
/// <param name="htmlSource"></param>
/// <param name="listOnly"></param>
/// <returns></returns>
private IResut[] ParseCurrentItems(string htmlSource, bool listOnly = false)
{
const string SkuIdKey = "ProductSku";
var resultList = new List <IResut>();
// 返回xpath查询器
var navigator = HtmlDocumentHelper.CreateNavigator(htmlSource);
var iterator = navigator.Select(@"//ul/li");
foreach (XPathNavigator item in iterator)
{
var title = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jDesc']/a/text()");
var href = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jDesc']//@href");
if (string.IsNullOrEmpty(title))
{
title = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jTitle']/a/text()");
href = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jTitle']//@href");
}
//HtmlDocumentHelper.GetNodeValue(item,".//div[@class='jPic']//@original")
var imgSrc = HtmlDocumentHelper.GetNodeValue(item, ".//div[@class='jPic']//@original");
if (imgSrc.Equals(string.Empty))
{
imgSrc = HtmlDocumentHelper.GetNodeValue(htmlSource, ".//div[@class='jPic']//@src");
}
var skuMatchResults = Regex.Match(href, @"(?<=/)\d+(?=.html)");
var sku = skuMatchResults.Success ? skuMatchResults.Value : string.Empty;
if (string.IsNullOrEmpty(sku))
{
continue;
}
// 评价数据
var comments = ParseComments(item);
IResut resut = new Resut();
resut[SkuIdKey] = sku;
resut["ShopUrl"] = this.ShopUrl;
resut["ProductName"] = title;
resut["ProductUrl"] = href;
resut["ProductImage"] = imgSrc;
resut["ProductComments"] = comments;
resultList.Add(resut);
}
if (!listOnly)
{
this.UpdateResultsPrices(resultList, SkuIdKey);
}
return(resultList.ToArray());
}
/// <summary>
/// 开始解析
/// </summary>
/// <param name="webContent">Content of the web.</param>
/// <returns></returns>
public IResut Parse(string webContent)
{
IResut resut = new Resut();
var navigator = HtmlDocumentHelper.CreateNavigator(webContent);
ParseShopScoreResult(resut, navigator);
throw new NotImplementedException();
}
/* /// <summary>
* /// 返回自营店的店铺编号列表
* /// </summary>
* /// <param name="shopDictionary">The shop dictionary.</param>
* /// <returns></returns>
* private string[] GetSelfSupportShopIds(IDictionary<string, IResut> shopDictionary)
* {
* var shopIdList = new List<string>();
*
* foreach (var shopItem in shopDictionary)
* {
* var shopId = shopItem.Key;
* if (shopItem.Value.GetStringValue(@"vender_type") == "0")
* {
* shopIdList.Add(shopId);
* }
* }
*
* return shopIdList.ToArray();
* }*/
/// <summary>
/// Parses the identifier from xpath.
/// </summary>
/// <param name="htmlSource">The HTML source.</param>
/// <param name="xpath">The xpath.</param>
/// <returns></returns>
private string[] ParseIdFromXpath(string htmlSource, string xpath)
{
var navigator = HtmlDocumentHelper.CreateNavigator(htmlSource);
var iterator = navigator.Select(xpath);
var xItems = HtmlDocumentHelper.CopyNodeToArray(iterator);
var pids = Array.ConvertAll(xItems, item => item.Value);
return(DictionaryHelper.Distinct(pids));
}
private string BuildAjaxSearchUrl(string webContent, IDictionary <string, string> renderStructure)
{
var matchResults = Regex.Match(webContent, "(?<=var params = ){[^}]+}");
if (!matchResults.Success)
{
throw new NotSupportedException("无法从页面中解析出搜索参数");
}
var jObject = JObject.Parse(matchResults.Value);
var navigator = HtmlDocumentHelper.CreateNavigator(webContent);
//System.Func<string, string> readJsonFunc = key => JsonHelper.TryReadJobjectValue(jObject, key,(string)null);
//System.Func<string, string> readHtmlFunc = key =>
//{
// string value;
// renderStructure.TryGetValue(key,out value);
// return value;
//};
//System.Func<string, string> readInputFunc = key =>
//HtmlDocumentHelper.GetNodeValue(navigator,$@"//input[@id='{key}']/@value");
var collection = Url.CreateQueryCollection();
collection[@"appId"] = ReadJsonFunc(jObject, "appId");
collection[@"orderBy"] = "5";
collection[@"pageNo"] = "1";
collection[@"direction"] = "1";
collection[@"categoryId"] = ReadJsonFunc(jObject, @"categoryId");
collection[@"pageSize"] = @"24";
collection[@"pagePrototypeId"] = ReadJsonFunc(jObject, @"pagePrototypeId");
collection[@"pageInstanceId"] = ReadHtmlFunc(renderStructure, @"m_render_pageInstance_id");
collection[@"moduleInstanceId"] = ReadHtmlFunc(renderStructure, "m_render_instance_id");
collection[@"prototypeId"] = ReadHtmlFunc(renderStructure, @"m_render_prototype_id");
collection[@"templateId"] = ReadHtmlFunc(renderStructure, @"m_render_template_id");
collection[@"layoutInstanceId"] = ReadHtmlFunc(renderStructure, @"m_render_layout_instance_id");
collection[@"origin"] = ReadHtmlFunc(renderStructure, @"m_render_origin");
collection[@"shopId"] = ReadInputFunc(navigator, @"shop_id");
collection[@"verderId"] = ReadInputFunc(navigator, @"vender_id");
collection[@"_"] = $"{JsCodeHelper.GetDateTime()}";
var baseUrl = renderStructure[@"m_render_is_search"] == "true"
? @"http://module-jshop.jd.com/module/getModuleHtml.html"
: @"http://mall.jd.com/view/getModuleHtml.html";
return(Url.CombinUrl(baseUrl, collection));
}
/// <summary>
/// 构造搜索 ajax url
/// </summary>
/// <param name="webContent">Content of the web.</param>
/// <param name="renderStructure">The render structure.</param>
/// <returns></returns>
/// <exception cref="System.NotSupportedException">$无法从页面中解析出搜索参数</exception>
private string BuildAjaxSearchUrl(string webContent, IDictionary <string, string> renderStructure)
{
/*webContent = File.ReadAllText(@"C:\Users\sinoX\Desktop\京东搜索页.html");*/
var matchResults = Regex.Match(webContent, "(?<=var params = ){[^}]+}");
if (!matchResults.Success)
{
throw new NotSupportedException("无法从页面中解析出搜索参数");
}
// {"appId":"435517","orderBy":"5","direction":"0","categoryId":"0","pageSize":"24","venderId":"1000004373","isGlobalSearch":"0","maxPrice":"0","pagePrototypeId":"17","pageNo":"1","shopId":"1000004373","minPrice":"0"}
var jObject = JObject.Parse(matchResults.Value);
var navigator = HtmlDocumentHelper.CreateNavigator(webContent);
System.Func <string, string> readJsonFunc = key => JsonHelper.TryReadJobjectValue(jObject, key, (string)null);
System.Func <string, string> readHtmlFunc = key =>
{
string value;
renderStructure.TryGetValue(key, out value);
return(value);
};
System.Func <string, string> readInputFunc =
key => HtmlDocumentHelper.GetNodeValue(navigator, $@"//input[@id='{key}']/@value");
var collection = Url.CreateQueryCollection();
collection[@"appId"] = readJsonFunc("appId");
collection[@"orderBy"] = "5";
collection[@"pageNo"] = "1";
collection[@"direction"] = "1";
collection[@"categoryId"] = readJsonFunc(@"categoryId");
collection[@"pageSize"] = @"24";
collection[@"pagePrototypeId"] = readJsonFunc(@"pagePrototypeId");
collection[@"pageInstanceId"] = readHtmlFunc(@"m_render_pageInstance_id");
collection[@"moduleInstanceId"] = readHtmlFunc(@"m_render_instance_id");
collection[@"prototypeId"] = readHtmlFunc(@"m_render_prototype_id");
collection[@"templateId"] = readHtmlFunc(@"m_render_template_id");
collection[@"layoutInstanceId"] = readHtmlFunc(@"m_render_layout_instance_id");
collection[@"origin"] = readHtmlFunc(@"m_render_origin");
collection[@"shopId"] = readInputFunc(@"shop_id");
collection[@"venderId"] = readInputFunc(@"vender_id");
/*collection[@"callback"] = @"jshop_module_render_callback"; // 不用这个直接返回一个 json 结构 */
collection[@"_"] = $"{JsCodeHelper.GetDateTime()}";
var baseUrl = renderStructure[@"m_render_is_search"] == "true"
? @"http://module-jshop.jd.com/module/getModuleHtml.html"
: @"http://mall.jd.com/view/getModuleHtml.html";
return(Url.CombinUrl(baseUrl, collection));
}
/// <summary>
/// 解析出总共的页数
/// </summary>
/// <param name="content"></param>
/// <returns></returns>
private int ParseAmountPage(string content)
{
if (content == null)
{
return(-1);
}
var navigator = HtmlDocumentHelper.CreateNavigator(content);
var node = navigator.SelectSingleNode(@"//div[@class='jPage']/em");
if (node == null)
{
return(-1);
}
var matchResults = Regex.Match(node.Value, @"(?<=共)\d+(?=条记录)");
return(matchResults.Success ? int.Parse(matchResults.Value) : -1);
}