using System;
using System.Data;
using System.Configuration;
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.IO;
public class GetRss
{
/**//// <summary>
/// 根据文件路径写RSS文件
/// </summary>
/// <remarks>
/// 例如:
/// WriteRss("D:Vs2005GenerateRssRSS_Folder est_tb.xml","test_tb")
/// 注意：根据表的结构,需要调整生成的RSS源。本实例仅供测试用。
/// </remarks>
/// <param name="pathfilename">文件路径</param>
/// <param name="tablename">表名</param>
/// <returns>true or false</returns>
public static bool WriteRss(string pathfilename,string tablename)
{
try
{
FileInfo finfo = new FileInfo(pathfilename);
using (FileStream fs = finfo.OpenWrite())
{
StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.GetEncoding("UTF-8"));
sw.WriteLine(GetRss.GetRSSString(tablename));
sw.Flush();
sw.Close();
}
return true;
}
catch (System.Exception ex)
{
System.Web.HttpContext.Current.Response.Write(ex.Message);
return false;
throw;
}
}
/**//// <summary>
/// 组织符合最新标准的RSS字符串
/// 参数：表名。
/// </summary>
/// <remarks>
/// 例如:
/// GetRSS()
/// 注意：根据表的结构,需要调整生成的RSS源。本实例仅供测试用。
/// </remarks>
/// <param name="tablename">表名</param>
/// <returns>返回一个DataSet 数据源</returns>
public static string GetRSSString(string Tablename)
{
try
{
DataSet ds = GetRSSData(Tablename);
string strRSS = "";
strRSS = strRSS + " <?xml version="1.0"?> " + System.Environment.NewLine;
strRSS = strRSS + " <rss xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"" + System.Environment.NewLine;
strRSS = strRSS + " xmlns:xsd="
http://www.w3.org/2001/XMLSchema" " + System.Environment.NewLine;
strRSS = strRSS + " xmlns:slash="
http://purl.org/rss/1.0/modules/slash/" version="2.0">" + System.Environment.NewLine;
strRSS = strRSS + " <channel>" + System.Environment.NewLine;
strRSS = strRSS + " <title>订阅标题</title> " + System.Environment.NewLine;
strRSS = strRSS + " <link>
http://www.**com.cn/</link>" + System.Environment.NewLine;
strRSS = strRSS + " <description>描述信息</description>" + System.Environment.NewLine;
strRSS = strRSS + " <language>zh-CN</language>" + System.Environment.NewLine;
strRSS = strRSS + " <generator>www.**com.cn</generator> " + System.Environment.NewLine;
strRSS = strRSS + " <copyright>北京**公司</copyright> " + System.Environment.NewLine;
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
strRSS = strRSS + " <item>" + System.Environment.NewLine;
strRSS = strRSS + " <title>" + ds.Tables[0].Rows[i]["Title"] + "</title> " + System.Environment.NewLine;
strRSS = strRSS + " <link>
http://www.**.com.cn/ArticleShow@" + ds.Tables[0].Rows[i]["ID"] + ".html</link> " + System.Environment.NewLine;
strRSS = strRSS + " <author /> " + System.Environment.NewLine;
strRSS = strRSS + " <guid>
http://www.**.com.cn/ArticleShow@" + ds.Tables[0].Rows[i]["ID"] + ".html</guid> " + System.Environment.NewLine;
strRSS = strRSS + " <pubDate>" + Convert.ToDateTime(ds.Tables[0].Rows[i]["AddDate"].ToString()).ToString("yyyy-MM-dd HH:mm") + "</pubDate> " + System.Environment.NewLine;
strRSS = strRSS + " <comments>
http://www.**.com.cn/ArticleShow@" + ds.Tables[0].Rows[i]["ID"] + ".html</comments> " + System.Environment.NewLine;
strRSS = strRSS + " <slash:comments>0</slash:comments> " + System.Environment.NewLine;
strRSS = strRSS + " <source url="
http://www.**.com.cn/ArticleShow@" + ds.Tables[0].Rows[i]["ID"] + ".html">" + ds.Tables[0].Rows[i]["Title"] + " </source> " + System.Environment.NewLine;
strRSS = strRSS + " <description>" + ds.Tables[0].Rows[i]["Description"] + "</description>" + System.Environment.NewLine;
strRSS = strRSS + " </item>" + System.Environment.NewLine;
}
strRSS = strRSS + " </channel>" + System.Environment.NewLine;
strRSS = strRSS + " </rss>" + System.Environment.NewLine;
return strRSS;
}
catch (Exception ex)
{
System.Web.HttpContext.Current.Response.Write(ex.Message);
throw;
}
}
/**//// <summary>
/// 获取RSS数据源
/// 参数：表名。
/// </summary>
/// <remarks>
/// 例如:
/// DataSet ds = GetRSSData(TableName)
/// 注意：根据表的结构,需要调整生成的RSS源。本实例仅供测试用。
/// </remarks>
/// <param name="Tablename">表名</param>
/// <returns>返回一个DataSet 数据源</returns>
public static DataSet GetRSSData(string Tablename)
{
String DBConnStr = System.Configuration.ConfigurationManager.AppSettings["Db_cfgConn"];
System.Data.SqlClient.SqlDataAdapter DataAdapter = new System.Data.SqlClient.SqlDataAdapter();
System.Data.SqlClient.SqlConnection Connection = new System.Data.SqlClient.SqlConnection(DBConnStr);
if (Connection.State != ConnectionState.Open)
{
Connection.Open();
}
try
{
System.Data.SqlClient.SqlCommand Command = new System.Data.SqlClient.SqlCommand("Select @COLUMNS=@COLUMNS+','+NAME FROM SYS.COLUMNS Where OBJECT_ID=OBJECT_ID(@TABLENAME) orDER BY column_id SET @COLUMNS='Select '+STUFF(@COLUMNS,1,1,'')+' FROM '+@TABLENAME+'' EXEC(@COLUMNS) ", Connection);
Command.CommandType = CommandType.Text;
Command.Parameters.Add("@TABLENAME", SqlDbType.VarChar, 20);
Command.Parameters["@TABLENAME"].Value = Tablename;
Command.Parameters.Add("@COLUMNS", SqlDbType.VarChar, 2000);
Command.Parameters["@COLUMNS"].Value = "";
Command.ExecuteNonQuery();
DataAdapter.SelectCommand = Command;
DataSet DataSet = new DataSet();
if (DataSet != null)
{
DataAdapter.Fill(DataSet, "table");
}
return DataSet;
}
catch (System.Exception ex)
{
System.Web.HttpContext.Current.Response.Write(ex.Message);
Connection.Close();
throw;
}
}
}