asp.net中生成读取rss

最新推荐文章于 2025-05-17 10:11:29 发布

zhang_jianzhi

最新推荐文章于 2025-05-17 10:11:29 发布

阅读量433

点赞数

分类专栏： asp.net 文章标签： asp.net string microsoft generator html object

asp.net 专栏收录该内容

19 篇文章

订阅专栏

主要是生成、读取xml文件，这里Repeater作为xml的载体，并不真正生成xml文件。
要注意<![CDATA[ ]]>语句，CDATA 节用于转义，否则将被识别为标记的文本块。<![ ]>类似html中的标签，用于兼容一些浏览器。
RssFeed.aspx
<%@ Page language="c#" Codebehind="RssFeed.aspx.cs" AutoEventWireup="false" Inherits="MyRss.RssFeed" %>
<asp:Repeater id="Repeater1" runat="server">
<HeaderTemplate>
<rss version="2.0">
<channel>
<title>NewsShow</title>
<link>http://192.168.1.7/MainOne_HZ/News/</link>
<description>Rss Feed for 192.168.1.7</description>
</HeaderTemplate>

<ItemTemplate>
<item>
<title><%# FormatForXML(DataBinder.Eval(Container.DataItem,"newsname")) %></title>
<description><![CDATA[<%#FormatForXML(DataBinder.Eval(Container.DataItem,"newsinfo"))%>]]></description>
<link>http://192.168.1.7/MainOne_HZ/News/NewsShow.aspx?ID=<%# DataBinder.Eval(Container.DataItem, "newsid") %></link>
<pubDate><%# String.Format("{0:R}",DataBinder.Eval(Container.DataItem,"wtime")) %></pubDate>
</item>
</ItemTemplate>

RssFeed.aspx.cs
private void Page_Load(object sender, System.EventArgs e)
{
   // 在此处放置用户代码以初始化页面
   if(!this.IsPostBack)
   {
    Response.ContentType="text/xml";
    SqlConnection con=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"]);
    SqlCommand cmd=new SqlCommand("select top 20 * from news order by newsid desc",con);
    con.Open();
    SqlDataReader dr=cmd.ExecuteReader();
    Repeater1.DataSource=dr;
    Repeater1.DataBind();
    dr.Close();
    con.Close();
   }
}
protected string FormatForXML(object input)
{
   string data=input.ToString();
   data=data.Replace("&","&");
   data=data.Replace("/",""");
   data=data.Replace("'","&qapos;");
   data=data.Replace("<","<");
   data=data.Replace(">","&gt");
   return data;
}

ReadRss.aspx
<%@ Page language="c#" Codebehind="ReadRss.aspx.cs" AutoEventWireup="false" Inherits="MyRss.ReadRss" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>ReadRss</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<%
string rssURL = "http://192.168.1.7/MainOne_HZ/MyRss/RssFeed.aspx";
ProcessRSSItem(rssURL);%>
</form>
</body>
</HTML>

ReadRss.aspx.cs
public void ProcessRSSItem(string rssURL)
{
System.Net.WebRequest myRequest = System.Net.WebRequest.Create(rssURL);
System.Net.WebResponse myResponse = myRequest.GetResponse();

   System.IO.Stream rssStream = myResponse.GetResponseStream();
   System.Xml.XmlDocument rssDoc = new System.Xml.XmlDocument();
   rssDoc.Load(rssStream);

System.Xml.XmlNodeList rssItems = rssDoc.SelectNodes("rss/channel/item");

   string title = "";
   string link = "";
   string description = "";

   for (int i = 0; i < rssItems.Count; i++)
   {
    System.Xml.XmlNode rssDetail;

    rssDetail = rssItems.Item(i).SelectSingleNode("title");
    if (rssDetail != null)
    {
     title = rssDetail.InnerText;
    }
    else
    {
     title = "";
    }

    rssDetail = rssItems.Item(i).SelectSingleNode("link");
    if (rssDetail != null)
    {
     link = rssDetail.InnerText;
    }
    else
    {
     link = "";
    }

    rssDetail = rssItems.Item(i).SelectSingleNode("description");
    if (rssDetail != null)
    {
     description = rssDetail.InnerText;
    }
    else
    {
     description = "";
    }

    Response.Write("<p><b><a href='" + link + "' target='new'>" + title + "</a></b><br/>");
    Response.Write(description + "</p>");
   }
}

本文来自优快云博客，转载请标明出处：http://blog.youkuaiyun.com/wszhoho/archive/2007/05/09/1601888.aspx