using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data; using System.Data.SqlClient; using System.Xml; using System.IO; using System.Web.Configuration; public partial class rss : System.Web.UI.Page { string HostUrl; string HttpHead; protected void Page_Load(object sender, EventArgs e) { HttpContext context = HttpContext.Current; HostUrl = context.Request.Url.ToString(); HostUrl = HostUrl.Substring(0, HostUrl.IndexOf("/", 8)); XmlTextWriter writer = new XmlTextWriter(context.Response.OutputStream, System.Text.Encoding.UTF8); WriteRSSPrologue(writer); WriteRSSHeadChennel(writer); string sql = "select top 10 title,id,time,content from blog_title order by time desc"; SqlDataReader dr = dbconn.ExecuteReader(sql); while (dr.Read()) { AddRSSItem(writer, (((DateTime)dr["time"]).ToUniversalTime()).ToString("r"), dr["title"].ToString(), HostUrl, dr["content"].ToString()); } dr.Close(); writer.Flush(); writer.Close(); context.Response.ContentEncoding = System.Text.Encoding.UTF8; context.Response.ContentType = "text/xml"; context.Response.Cache.SetCacheability(HttpCacheability.Public); context.Response.End(); } private XmlTextWriter WriteRSSPrologue(XmlTextWriter writer) { writer.WriteStartDocument(); writer.WriteStartElement("rss"); writer.WriteAttributeString("version", "2.0"); writer.WriteAttributeString("xmlns:dc", "http://purl.org/dc/elements/1.1/"); writer.WriteAttributeString("xmlns:trackbac", "http://madskills.com/public/xml/rss/module/trackback/"); writer.WriteAttributeString("xmlns:wfw", "http://wellformedweb.org/CommentAPI/"); writer.WriteAttributeString("xmlns:slash", "http://purl.org/rss/1.0/modules/slash/"); return writer; } private XmlTextWriter WriteRSSHeadChennel(XmlTextWriter writer) { writer.WriteStartElement("channel"); writer.WriteElementString("title", "编程博客（Nickeyj's Blog） - 最新日志"); writer.WriteElementString("link", HostUrl + "/ "); writer.WriteElementString("description", "编程博客（Nickeyj's Blog）"); writer.WriteElementString("copyright", "2008 www.52bcnet.com"); writer.WriteElementString("generator", "编程博客（Nickeyj's Blog） RSS 生成器 2.0 "); return writer; } private XmlTextWriter AddRSSItem(XmlTextWriter writer, string pubDate, string sItemTitle, string sItemLink, string sItemDescription) { writer.WriteStartElement("item"); writer.WriteElementString("title", sItemTitle); writer.WriteElementString("link", sItemLink); writer.WriteElementString("description", sItemDescription); writer.WriteElementString("pubDate", pubDate); writer.WriteEndElement(); return writer; } private XmlTextWriter AddRSSItem(XmlTextWriter writer, string sItemTitle, string sItemLink, string sItemDescription, bool bDescAsCDATA) { writer.WriteStartElement("item"); writer.WriteElementString("title", sItemTitle); writer.WriteElementString("link", sItemLink); if (bDescAsCDATA == true) { writer.WriteStartElement("description"); writer.WriteCData(sItemDescription); writer.WriteEndElement(); } else { writer.WriteElementString("description", sItemDescription); } writer.WriteElementString("pubDate", DateTime.Now.ToString("r")); writer.WriteEndElement(); return writer; } private XmlTextWriter WriteRSSClosing(XmlTextWriter writer) { writer.WriteEndElement(); writer.WriteEndElement(); writer.WriteEndDocument(); return writer; } }
