Asp.net(C#) 输出Xml格式数据---Rss生成

   

   XmlWriter.Create(TextWrite output)创建一个实例,可以将Response.Output 直接传入,这样编码是按web.config里面的配置或默认(utf-8)设置的,使用Response.ContentEncoding = Encoding.UTF8; 可以设置生存xml数据的编码,不过需要放在,XmlWriter.Create之前 xmlWriter在输出完成后,请使用Flush以保证内容全部输出.XmlWriterSettings 用来设置Xml 文本串的一些格式(在用记事本查看是的情况,而IE等可以自动进行格式化显示),比方缩进,注意也要放在Create方法前设置.

 代码入下:

   XmlWriterSettings s = new XmlWriterSettings();    s.Indent = true;    XmlWriter w = XmlWriter.Create(Response.Output,s);       w.WriteStartDocument();    w.WriteStartElement("rss");    w.WriteAttributeString("version", "2.0");    w.WriteStartElement("channel");    w.WriteElementString("title", "神鹰医药招商网医药资讯");    w.WriteElementString("link", "http://news.gyzs.net");    w.WriteElementString("description", "医药信息，医药网络营销售");    WriteItem(w,n,flag);    w.WriteEndElement();    w.WriteEndElement();    w.WriteEndDocument();    w.Flush();    w.Close();

    Response.ContentType = "text/xml";    Response.Flush();    Response.End();

代码2:

private void WriteItem(XmlWriter w,int num,bool flag){        using (IDataReader dr = Article.Query().SetTop(num.ToString()).SetSelectList("ID,Title,Summary,AddTime").ORDER_BY("Id Desc").ExecuteReader())    {               while (dr.Read())        {            w.WriteStartElement("item");            w.WriteAttributeString("id", dr["Id"].ToString());            //title            w.WriteStartElement("title");            w.WriteCData(dr["title"].ToString());            w.WriteEndElement();            //link            w.WriteStartElement("link");            w.WriteString( "http://news.gyzs.net/article/" + ((DateTime)dr["AddTime"]).ToString("yyyy-MM-dd") + "/" + dr["id"].ToString() + ".html" );            w.WriteEndElement();            //description            w.WriteStartElement("description");            if (flag)            {                w.WriteCData(dr["Summary"].ToString());            }            w.WriteEndElement();            //pubDate            w.WriteStartElement("pubDate");            w.WriteString(((DateTime)dr["AddTime"]).ToString() );            w.WriteEndElement();            w.WriteEndElement();        }           }

---------------------下面使用MemoryStream ,StreamWriter 来完成同样的任务

 

    //MemoryStream ms = new MemoryStream();    //StreamWriter sw = new StreamWriter(ms, Encoding.GetEncoding("gb2312"));    //XmlWriter w = XmlWriter.Create(sw);

    //StreamReader sr = new StreamReader(ms, Encoding.GetEncoding("gb2312"));    //ms.Seek(0, SeekOrigin.Begin);    //string v = sr.ReadToEnd();    //sr.Close();    //Response.Write(v);