private void GetNodeText(HtmlNode node, StringBuilder result, HtmlNodeCollection inputs)
{
var text = node.InnerText;
if (!string.IsNullOrEmpty(text))
{
result.Append(text.Trim());
}
else
{
if (inputs.Contains(node))
{
var att = node.Attributes["value"];
if (att != null)
{
result.Append(" " + att.Value.Trim());
}
}
}
}
public string Parse(string html)
{
HtmlNode root = GetRoot(html);
var result = new StringBuilder();
HtmlNodeCollection inputs = root.SelectNodes("//input");
HtmlNodeCollection brs = root.SelectNodes("//br");
HtmlNodeCollection divs = root.SelectNodes("//div");
foreach (HtmlNode node in root.DescendantNodes())
{
if (!node.HasChildNodes)
{
GetNodeText(node, result, inputs);
}
if (brs != null && brs.Contains(node) || (divs != null && divs.Contains(node)))
{
result.AppendLine();
}
}
return(result.ToString());
}
private void ParseBookHtml(BookInfo bookInfo, string html)
{
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
#region BookName
var nodeList = doc.DocumentNode.SelectNodes("//span[@property='v:itemreviewed']");
if (nodeList != null && nodeList.Count < 1)
{
return;
}
bookInfo.BookName = nodeList[0].InnerText;
#endregion
#region Info
nodeList = doc.DocumentNode.SelectNodes("//div[@id='info']");
HtmlNodeCollection infoes = null;
if (nodeList != null && nodeList.Count >= 1)
{
infoes = nodeList[0].SelectNodes("//span[@class='pl']");
}
if (infoes != null && infoes.Count > 0)
{
foreach (var info in infoes)
{
string key = info.InnerText.Trim();
string value = string.Empty;
HtmlNode nextNode = info.NextSibling;
while (nextNode != null && !infoes.Contains(nextNode))
{
string innerContent = nextNode.InnerText.Trim();
if (!string.IsNullOrEmpty(innerContent))
{
if (string.IsNullOrEmpty(value))
{
value = innerContent;
}
else
{
value = string.Format("{0}{1}", value, innerContent);
}
}
nextNode = nextNode.NextSibling;
}
switch (key)
{
case "作者":
bookInfo.Author = value.TrimStart(':');
break;
case "出版社:":
bookInfo.Publisher = value;
break;
case "原作名:":
if (string.IsNullOrEmpty(bookInfo.Author))
{
bookInfo.Author = value;
}
break;
case "译者":
break;
case "出版年:":
bookInfo.PublishDate = value;
break;
case "页数:":
bookInfo.PageNum = value;
break;
case "定价:":
bookInfo.Price = value;
break;
case "ISBN:":
bookInfo.ISBN = value;
break;
default:
break;
}
}
}
#endregion
#region Score
HtmlNode averageNode = doc.DocumentNode.SelectSingleNode("//strong[@property='v:average']");
if (averageNode != null)
{
float average;
if (float.TryParse(averageNode.InnerText, out average))
{
bookInfo.AverageScore = average;
}
}
HtmlNode voteNode = doc.DocumentNode.SelectSingleNode("//span[@property='v:votes']");
if (voteNode != null)
{
int vote;
if (int.TryParse(voteNode.InnerText, out vote))
{
bookInfo.RatingNum = vote;
}
}
var starNodeList = doc.DocumentNode.SelectNodes("//span[@class='rating_per']");
int starNum = 0;
if (starNodeList != null)
{
foreach (HtmlNode starNode in starNodeList)
{
if (starNum >= 5)
{
break;
}
string star = starNode.InnerText.TrimEnd('%');
float dStar;
if (float.TryParse(star, out dStar))
{
SetStar(bookInfo, starNum, dStar / 100f);
}
starNum++;
}
}
#endregion
#region Intro
var introNodeList = doc.DocumentNode.SelectNodes("//div[@class='intro']");
if (introNodeList != null && introNodeList.Count >= 2)
{
bookInfo.ContentDescription = introNodeList[0].InnerText;
bookInfo.AuthorDescription = introNodeList[1].InnerText;
}
#endregion
#region Tag
HtmlNodeCollection tagNodeLists = doc.DocumentNode.SelectNodes("//a[@class=' tag']");
StringBuilder tagStringBuilder = new StringBuilder();
if (tagNodeLists != null)
{
foreach (var tagNode in tagNodeLists)
{
string tag = tagNode.InnerText.Trim();
if (!string.IsNullOrEmpty(tag))
{
tagStringBuilder.AppendFormat("{0},", tag);
}
}
}
bookInfo.Tags = tagStringBuilder.ToString().TrimEnd(',');
#endregion
}
