.net 生成网站地图 sitemap.xml

1.此处为Demo，借鉴别人的生成 xml

//创建xml文件方法一
    protected void btn1_OnClick(object sender, EventArgs e)
    {
         XmlText xmltext;
         XmlDocument xmldoc = new XmlDocument(); 

        //加入XML的声明段落
         XmlNode xmlnode = xmldoc.CreateXmlDeclaration("1.0", "gb2312", null);
         xmldoc.AppendChild(xmlnode); 

        //加入一个根元素
         XmlElement xmlelem = xmldoc.CreateElement("", "bookstore", "");
         xmltext = xmldoc.CreateTextNode("");
         xmlelem.AppendChild(xmltext);
         xmldoc.AppendChild(xmlelem); 

        //加入一个子元素
         XmlElement xmlelem1 = xmldoc.CreateElement("", "book", "");
         xmltext = xmldoc.CreateTextNode("");
         xmlelem1.AppendChild(xmltext);
        //为子元素"book"增加两个属性
         xmlelem1.SetAttribute("genre", "", "fantasy");
         xmlelem1.SetAttribute("ISBN", "2-3631-4"); 

         xmldoc.ChildNodes.Item(1).AppendChild(xmlelem1); 

        //创建三个子元素的子元素
         XmlElement xmlelem2 = xmldoc.CreateElement("", "title", "");
         xmltext = xmldoc.CreateTextNode("Oberon's Legacy");
        xmlelem2.AppendChild(xmltext);
         xmldoc.ChildNodes.Item(1).AppendChild(xmlelem1).AppendChild(xmlelem2); 

         XmlElement xmlelem3 = xmldoc.CreateElement("", "author", "");
         xmltext = xmldoc.CreateTextNode("Corets, Eva");
         xmlelem3.AppendChild(xmltext);
         xmldoc.ChildNodes.Item(1).AppendChild(xmlelem1).AppendChild(xmlelem3); 

         XmlElement xmlelem4 = xmldoc.CreateElement("", "price", "");
         xmltext = xmldoc.CreateTextNode("5.95");
         xmlelem4.AppendChild(xmltext);
         xmldoc.ChildNodes.Item(1).AppendChild(xmlelem1).AppendChild(xmlelem4);
         xmldoc.Save(Server.MapPath("bookstore.xml")); //保存
     } 

    //创建xml文件方法二
    protected void btn2_OnClick(object sender, EventArgs e)
    {
         XmlDocument xmldoc = new XmlDocument(); //创建空的XML文档
         xmldoc.LoadXml("<?xml version='1.0' encoding='gb2312'?>" +
         "<bookstore>" +
         "<book genre='fantasy' ISBN='2-3631-4'>" +
         "<title>Oberon's Legacy</title>" +
         "<author>Corets, Eva</author>" +
         "<price>5.95</price>" +
         "</book>" +
         "</bookstore>");
         xmldoc.Save(Server.MapPath("bookstore2.xml")); //保存
     } 

如果如下：

<?xml version="1.0" encoding="gb2312" ?>
<bookstore>
  <book genre="fantasy" ISBN="2-3631-4">
  <title>Oberon's Legacy</title>
  <author>Corets, Eva</author>
  <price>5.95</price>
  </book>
</bookstore>

不是我想要的网站地图xml文件。

2.以下是我自己根据实际情况写的

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Xml;

namespace Helper
{
    public class SitemapXml
    {
        private const string Xmlns = "http://www.sitemaps.org/schemas/sitemap/0.9";
        private const string XmlnsXsi = "http://www.w3.org/2001/XMLSchema-instance";
        private const string XsiSchemaLocation = "http://www.sitemaps.org/schemas/sitemap/0.9  http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd";

        /// <summary>
        /// 生成SiteMap地图
        /// </summary>
        /// <param name="siteMaps">需要生成的 对象列表</param>
        /// <param name="saveFileName">设置文件保存名称</param>
        /// <param name="changefreq">更新周期</param>
        /// <param name="savePath">xml文件保存路径</param>
        /// <returns></returns>
        public static bool CreateSiteMapXml(List<SiteMap> siteMaps, string savePath = "/", string saveFileName = "sitemap", string changefreq = "weekly")
        {
            //保存创建好的XML文档
            string filename = saveFileName + ".xml";
            string path = System.Web.HttpContext.Current.Server.MapPath(savePath) + filename;

            //先创建XML,返回路径
            var xmldoc = new XmlDocument();
            //加入XML的声明段落,<?xml version="1.0" encoding="gb2312"?>
            XmlDeclaration xmldecl = xmldoc.CreateXmlDeclaration("1.0", "UTF-8", null);
            xmldoc.AppendChild(xmldecl);

            //加入一个根元素
            XmlNode xmlelem = xmldoc.CreateElement("", "urlset", "");
            //添加属性
            XmlAttribute attr = xmldoc.CreateAttribute("xmlns");
            attr.Value = Xmlns;
            if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

            attr = xmldoc.CreateAttribute("xmlns:xsi");
            attr.Value = XmlnsXsi;
            if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

            attr = xmldoc.CreateAttribute("xsi:schemaLocation");
            attr.Value = XsiSchemaLocation;
            if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

            xmldoc.AppendChild(xmlelem);
            string lastmod = DateTime.Now.ToString("yyyy-MM-dd");
            for (int i = 0; i < siteMaps.Count; i++)
            {
                XmlNode root = xmldoc.SelectSingleNode("urlset");//查找<urlset>
                if (root == null)
                {
                    //加入一个根元素
                    xmlelem = xmldoc.CreateElement("", "urlset", "");
                    //添加属性
                    attr = xmldoc.CreateAttribute("xmlns");
                    attr.Value = Xmlns;
                    if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

                    attr = xmldoc.CreateAttribute("xmlns:xsi");
                    attr.Value = XmlnsXsi;
                    if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

                    attr = xmldoc.CreateAttribute("xsi:schemaLocation");
                    attr.Value = XsiSchemaLocation;
                    if (xmlelem.Attributes != null) xmlelem.Attributes.SetNamedItem(attr);

                    xmldoc.AppendChild(xmlelem);
                    i = 0;
                    continue;
                }
                XmlElement xe1 = xmldoc.CreateElement("url");//创建一个<url>节点 

                XmlElement xmlelem1 = xmldoc.CreateElement("", "loc", "");
                XmlText xmltext = xmldoc.CreateTextNode(siteMaps[i].Loc);
                xmlelem1.AppendChild(xmltext);
                xe1.AppendChild(xmlelem1);

                xmlelem1 = xmldoc.CreateElement("", "priority", "");
                xmltext = xmldoc.CreateTextNode(siteMaps[i].Priority);
                xmlelem1.AppendChild(xmltext);
                xe1.AppendChild(xmlelem1);

                xmlelem1 = xmldoc.CreateElement("", "lastmod", "");
                xmltext = xmldoc.CreateTextNode(lastmod);
                xmlelem1.AppendChild(xmltext);
                xe1.AppendChild(xmlelem1);

                xmlelem1 = xmldoc.CreateElement("", "changefreq", "");
                xmltext = xmldoc.CreateTextNode(changefreq);
                xmlelem1.AppendChild(xmltext);
                xe1.AppendChild(xmlelem1);

                root.AppendChild(xe1);//添加到<urlset>节点中
            }
            try
            {
                //然后在保存到源位置
                xmldoc.AppendChild(xmlelem);
                xmldoc.Save(path);
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }

    }

    /// <summary>
    ///
    /// <url>
    /// <loc>http://news.chinahbnet.com/2014/8/19/15352.html</loc>
    /// <priority>0.5</priority>
    /// <lastmod>2014-08-19</lastmod>
    /// <changefreq>weekly</changefreq>
    /// </url>
    ///
    /// </summary>
    public class SiteMap
    {
        /// <summary>
        /// 链接地址
        /// 如：http://news.chinahbnet.com
        /// </summary>
        public string Loc { get; set; }
        /// <summary>
        /// 网页权重
        /// 0.1 - 1
        /// </summary>
        public string Priority { get; set; }
        /// <summary>
        /// 生成日期
        /// 2014-08-19
        /// </summary>
        public string Lastmod { get; set; }
        /// <summary>
        /// 更新周期
        /// always  经常
        /// hourly  每小时
        /// daily   每天
        /// weekly  每周
        /// monthly 每月
        /// yearly  每年
        /// never   从不
        /// </summary>
        public string Changefreq { get; set; }

    }
}

生成的结果为：

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9  http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
  <url>
    <loc>http://www.baidu.com</loc>
    <priority>1.00</priority>
    <lastmod>2014-08-19</lastmod>
    <changefreq>weekly</changefreq>
  </url>
</urlset>

希望可以帮助到你！

.net 生成网站地图 sitemap.xml