C#編寫RSS彙總閱覽器[整理]

最後更新：2018-12-07 來源：互聯網

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test01.aspx.cs" Inherits="Test01" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    public void ProcessRSSItem(string rssURL)
    {
        //使用rssURL的值建立了一個WebRequest項
        System.Net.WebRequest myRequest = System.Net.WebRequest.Create(rssURL);
        //WebRequest請求的響應將會被放到一個WebResponse對象myResponse裡,然後這個WebResponse對象被用來建立一個流來取出XML的值
        System.Net.WebResponse myResponse = myRequest.GetResponse();
        System.IO.Stream rssStream = myResponse.GetResponseStream();
        //使用一個XmlDocument對象rssDoc來儲存流中的XML內容。XmlDocument對象用來調入XML的內容
        System.Xml.XmlDocument rssDoc = new System.Xml.XmlDocument();
        rssDoc.Load(rssStream);
        //使用XPath表達，一個項節點列表可以如下方式建立
        //rssItems儲存了從RSS裡獲得所有項節點的資訊
        System.Xml.XmlNodeList rssItems = rssDoc.SelectNodes("rss/channel/item");
        string title = "";
        string link = "";
        string description = "";
        for (int i = 0; i < rssItems.Count; i++)
        {
            //在 rssItems中儲存的每個項，每個標記（tag）元素都可以用SelectSingleNode方法提取出來。返回的值將被賦給一個XMLNode對象。
            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='_blank'>" + title + "</a></b><br/>");
            Response.Write(description + "</p>");
        }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>讀取RSS</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <%
        string rssURL = "http://www.search.hc360.com/xml/rss_r001068002002.xml";
    Response.Write("<font size=5><b>Site: " + rssURL + "</b></font><Br />");
    ProcessRSSItem(rssURL);
    Response.Write("<hr />");
    rssURL = "http://rss.sina.com.cn/news/world/focus15.xml";
    Response.Write("<font size=5><b>Site: " + rssURL + "</b></font><Br />");
    ProcessRSSItem(rssURL);
       //
    Response.Write("<hr />");
    rssURL = "http://rss.sina.com.cn/news/china/focus15.xml";
    Response.Write("<font size=5><b>Site: " + rssURL + "</b></font><Br />");
    ProcessRSSItem(rssURL);
    %>
    </div>
    </form>
</body>
</html>

本文章原先以中文撰寫並發佈於 aliyun.com，亦設英文版本，僅作資訊用途。本網站不對文章的準確性，完整性或可靠性或其任何翻譯作出任何明示或暗示的陳述或保證。如對該文章有任何疑慮或投訴，請傳送電郵至 info-contact@alibabacloud.com 並提供相關疑慮或投訴的詳細說明。職員會於 5 個工作天內與您聯絡，一經驗證之後，即會刪除該侵權內容。

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