/// <summary>
/// 在一个一级类下面的全部二级类进行查找
/// </summary>
/// <param name="html"></param>
/// <param name="parentCode"></param>
/// <returns></returns>
private List <TencentCategoryEntity> Second(string url, string parentCode)
{
string html = HttpHelper.DownloadUrl(url);
List <TencentCategoryEntity> categoryList = new List <TencentCategoryEntity>();
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
string path = "//*[@id='auto-test-1']/div[1]/dl/dd";
HtmlNodeCollection nodeList = doc.DocumentNode.SelectNodes(path);
foreach (HtmlNode node in nodeList)
{
HtmlDocument htmlDocument = new HtmlDocument();
htmlDocument.LoadHtml(node.InnerHtml);
string codePath = "//a";
HtmlNode codeNode = htmlDocument.DocumentNode.SelectSingleNode(codePath);
string href = codeNode.Attributes["href"].Value;
if (!string.IsNullOrWhiteSpace(href))
{
href = href.Replace(";", "&");
}
string code = string.Empty;
if (href != null && href.IndexOf("st=") != -1)
{
href = href.Replace(";", "&");
code = href.Substring(href.IndexOf("st=") + 3, 4);
}
TencentCategoryEntity category = new TencentCategoryEntity()
{
Id = _Count++,
State = 1,
CategoryLevel = 2,
Code = code,
ParentCode = parentCode
};
category.Name = codeNode.InnerText;
category.Url = href;
categoryList.Add(category);
if (codeNode.InnerText != "全部")
{
categoryList.AddRange(this.Third($"https://ke.qq.com{href}&tuin=7e4f8b7d", code));
}
}
return(categoryList);
}
/// <summary>
/// 在一个二级类下的全部三级类里面进行查找
/// </summary>
/// <param name="html"></param>
/// <param name="parentCode"></param>
/// <returns></returns>
private List <TencentCategoryEntity> Third(string url, string parentCode)
{
string html = HttpHelper.DownloadUrl(url);
List <TencentCategoryEntity> categoryList = new List <TencentCategoryEntity>();
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
string path = "//*[@id='auto-test-1']/div[1]/dl/dd";
HtmlNodeCollection nodeList = doc.DocumentNode.SelectNodes(path);
if (nodeList == null)
{
}
foreach (HtmlNode node in nodeList)
{
HtmlDocument htmlDocument = new HtmlDocument();
htmlDocument.LoadHtml(node.InnerHtml);
string codePath = "//a";
HtmlNode codeNode = htmlDocument.DocumentNode.SelectSingleNode(codePath);
string href = codeNode.Attributes["href"].Value;
string code = string.Empty;
if (href != null)
{
href = href.Replace(";", "&");
}
if (href != null && href.IndexOf("tt=") != -1)
{
href = href.Replace(";", "&");
code = href.Substring(href.IndexOf("tt=") + 3, 4);
}
TencentCategoryEntity category = new TencentCategoryEntity()
{
Id = _Count++,
State = 1,
CategoryLevel = 3,
Code = code,
ParentCode = parentCode
};
category.Name = codeNode.InnerText;
category.Url = href;
categoryList.Add(category);
}
return(categoryList);
}
/// <summary>
/// 对每一个一级类进行查找
/// </summary>
/// <param name="html"></param>
/// <param name="code"></param>
/// <param name="parentCode"></param>
/// <returns></returns>
private List <TencentCategoryEntity> First(string html, string parentCode)
{
List <TencentCategoryEntity> categoryList = new List <TencentCategoryEntity>();
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
string namePath = "//a/h2";
HtmlNode name = doc.DocumentNode.SelectSingleNode(namePath);
string codePath = "//a";
HtmlNode codeNode = doc.DocumentNode.SelectSingleNode(codePath);
string href = codeNode.Attributes["href"].Value;
string code = string.Empty;
if (href != null && href.IndexOf("mt=") != -1)
{
href = href.Replace(";", "&");
code = href.Substring(href.IndexOf("mt=") + 3, 4);
}
TencentCategoryEntity category = new TencentCategoryEntity()
{
Id = _Count++,
State = 1,
CategoryLevel = 1,
Code = code,
ParentCode = parentCode
};
category.Name = name.InnerText;
category.Url = href;
categoryList.Add(category);
if (name.InnerText != "全部")
{
categoryList.AddRange(this.Second($"https://ke.qq.com{href}&tuin=7e4f8b7d", code));
}
return(categoryList);
}
public CourseSearch(TencentCategoryEntity _category)
{
category = _category;
}