1、读取网络中html网页内容，获取网页中元素body内的html，处理所有img元素的src属性后以字符串返回
if (l_sWenBenHtmlFtpPath.Substring(l_sWenBenHtmlFtpPath.LastIndexOf(".") + 1) == "html")
{
HtmlWeb htmlWeb = new HtmlWeb();
HtmlDocument htmlDoc = htmlWeb.Load(l_sWenBenHtmlFtpPath);
HtmlNode htmlNode = htmlDoc.DocumentNode;
HtmlNodeCollection nodes = htmlNode.SelectNodes("//body"); //使用xpath语法进行查询
if (nodes != null)
{
foreach (HtmlNode bodyTag in nodes)
{
HtmlNodeCollection nodes2 = htmlNode.SelectNodes("//img"); //使用xpath语法进行查询
if (nodes2 != null)
{
foreach (HtmlNode imgTag in nodes2)
{
string imgHttpPath = imgTag.Attributes["src"].Value;
imgTag.Attributes["src"].Value = l_sWenBenHtmlFtpPath.Substring(0, l_sWenBenHtmlFtpPath.LastIndexOf("/") + 1) + imgHttpPath;
}
}
l_sWenBenHtml = bodyTag.InnerHtml;
}
}
}
2、通过HtmlAgilityPack Html操作类库将html格式的字符串加载为html文档对象，再对html dom进行操作
//1.解码前台提交的html字串
string sDecodeString = HttpUtility.HtmlDecode(HttpUtility.UrlDecode(sEncodeString));
//2.拼接成完整的html字串
sDecodeString = @"<!DOCTYPE html><html><head><meta http-equiv=""content-type"" content=""text/html;charset=UTF-8""/>"
+ @"</head><body><div>" + sDecodeString + @"</div></body></html>";
//3.处理html的img标签的src属性-C#的HTML DOM操作
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(sDecodeString.Replace("\n", " "));
HtmlNode node = doc.DocumentNode;
HtmlNodeCollection nodes = node.SelectNodes("//img"); //使用xpath语法进行查询
if (nodes != null) //没有img节点时出错
{
//处理html字符串中img标签的src属性
foreach (HtmlNode imgTag in nodes)
{
string imgHttpPath = imgTag.Attributes["src"].Value;
imgHttpPath = imgHttpPath.Substring(imgHttpPath.LastIndexOf("/") + 1);
imgTag.Attributes["src"].Value = imgHttpPath;
}
}
//4.获取处理后的html字符串
sHtmlString = node.OuterHtml; //处理img中src属性后的html字符串 //5.将字符串存入html格式的文件中 //do something
持续更新中，敬请期待...
时间： 2024-07-29 06:45:23