/// <summary>
/// 获得论坛最新的20个主题的Rss描述
/// </summary>
/// <param name="ttl">TTL数值</param>
/// <returns>Rss描述</returns>
public static string GetRssXml(int ttl)
{
Discuz.Cache.DNTCache cache = Discuz.Cache.DNTCache.GetCacheService();
string str = cache.RetrieveObject("/RSS/Index") as string;
if (str != null)
{
return(str);
}
ForumInfo[] forumlist = Forums.GetForumList();
UserGroupInfo guestinfo = UserGroups.GetUserGroupInfo(7);
StringBuilder sbforumlist = new StringBuilder(); //不允许游客访问的板块Id列表
StringBuilder sbRss = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\" ?>\r\n");
foreach (ForumInfo f in forumlist)
{
if (f.Allowrss == 0)
{
sbforumlist.AppendFormat(",{0}", f.Fid);
}
else
{
if (f.Viewperm == null || f.Viewperm == string.Empty)
{
//板块权限设置为空，按照用户组权限走，RSS仅检查游客权限
if (guestinfo.Allowvisit == 0)
{
sbforumlist.AppendFormat(",{0}", f.Fid);
}
}
else
{
if (!Utils.InArray("7", f.Viewperm, ","))
{
sbforumlist.AppendFormat(",{0}", f.Fid);
}
}
}
}
if (sbforumlist.Length > 0)
{
sbforumlist.Remove(0, 1);
}
string forumurl = "http://" + DNTRequest.GetCurrentFullHost() + ("/").ToLower();
sbRss.Append("<?xml-stylesheet type=\"text/xsl\" href=\"rss.xsl\" media=\"screen\"?>\r\n");
sbRss.Append("<rss version=\"2.0\">\r\n");
sbRss.Append(" <channel>\r\n");
sbRss.Append(" <title>");
sbRss.Append(Utils.HtmlEncode(config.Forumtitle));
sbRss.Append("</title>\r\n");
sbRss.Append(" <link>");
sbRss.Append(forumurl);
sbRss.Append("</link>\r\n");
sbRss.Append(" <description>Latest 20 threads</description>\r\n");
sbRss.Append(" <copyright>Copyright (c) ");
sbRss.Append(Utils.HtmlEncode(config.Forumtitle));
sbRss.Append("</copyright>\r\n");
sbRss.Append(" <generator>");
sbRss.Append("Discuz!NT");
sbRss.Append("</generator>\r\n");
sbRss.Append(" <pubDate>");
//sbRss.Append(DateTime.Now.ToUniversalTime().ToString("ddd, dd MMM yyyy HH':'mm':'ss 'GMT'"));
sbRss.Append(DateTime.Now.ToString("r"));
sbRss.Append("</pubDate>\r\n");
sbRss.AppendFormat(" <ttl>{0}</ttl>\r\n", ttl.ToString());
//声明新的缓存策略接口
Discuz.Cache.ICacheStrategy ics = new RssCacheStrategy();
ics.TimeOut = ttl;
cache.LoadCacheStrategy(ics);
IDataReader reader = DatabaseProvider.GetInstance().GetNewTopics(sbforumlist.ToString());
if (reader != null)
{
while (reader.Read())
{
sbRss.Append(" <item>\r\n");
sbRss.Append(" <title>");
sbRss.Append(Utils.HtmlEncode(reader["title"].ToString().Trim()));
sbRss.Append("</title>\r\n");
sbRss.Append(" <description><![CDATA[");
if (reader["message"].ToString().IndexOf("[hide]") > -1)
{
sbRss.Append("***内容隐藏***");
}
else
{
sbRss.Append(Utils.HtmlEncode(Utils.GetSubString(UBB.ClearUBB(reader["message"].ToString()), 200, "......")));
}
sbRss.Append("]]></description>\r\n");
sbRss.Append(" <link>");
sbRss.Append(Utils.HtmlEncode(forumurl));
if (config.Aspxrewrite == 1)
{
sbRss.Append("showtopic-");
sbRss.Append(reader["tid"].ToString());
sbRss.Append(config.Extname);
}
else
{
sbRss.Append("showtopic.aspx?topicid=");
sbRss.Append(reader["tid"].ToString());
}
sbRss.Append("</link>\r\n");
sbRss.Append(" <category>");
sbRss.Append(Utils.HtmlEncode(reader["name"].ToString().Trim()));
sbRss.Append("</category>\r\n");
sbRss.Append(" <author>");
sbRss.Append(Utils.HtmlEncode(reader["poster"].ToString().Trim()));
sbRss.Append("</author>\r\n");
sbRss.Append(" <pubDate>");
sbRss.Append(Utils.HtmlEncode(Convert.ToDateTime(reader["postdatetime"]).ToString("r").Trim()));
sbRss.Append("</pubDate>\r\n");
sbRss.Append(" </item>\r\n");
}
reader.Close();
}
else
{
sbRss.Length = 0;
sbRss.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n");
sbRss.Append("<Rss>Error</Rss>\r\n");
cache.AddObject("/RSS/Index", sbRss.ToString());
cache.LoadDefaultCacheStrategy();
return(sbRss.ToString());
}
sbRss.Append(" </channel>\r\n");
sbRss.Append("</rss>");
cache.AddObject("/RSS/Index", sbRss.ToString());
cache.LoadDefaultCacheStrategy();
return(sbRss.ToString());
}
/// <summary>
/// 获得指定版块最新的20个主题的Rss描述
/// </summary>
/// <param name="ttl">TTL数值</param>
/// <param name="fid">版块id</param>
/// <returns>Rss描述</returns>
public static string GetForumRssXml(int ttl, int fid)
{
Discuz.Cache.DNTCache cache = Discuz.Cache.DNTCache.GetCacheService();
string str = cache.RetrieveObject("/RSS/Forum" + fid) as string;
if (str != null)
{
return(str);
}
string forumurl = "http://" + DNTRequest.GetCurrentFullHost() + ("/").ToLower();//GeneralConfigs.GetConfig().Forumurl;
//if (!forumurl.EndsWith("/"))
//{
// forumurl = forumurl + "/";
//}
ForumInfo forum = Forums.GetForumInfo(fid);
if (forum == null)
{
return("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<Rss>Specified forum not found</Rss>\r\n");
}
if (forum.Viewperm == null || forum.Viewperm == string.Empty)
{
//板块权限设置为空，按照用户组权限走，RSS仅检查游客权限
UserGroupInfo guestinfo = UserGroups.GetUserGroupInfo(7);
if (guestinfo.Allowvisit == 0)
{
return("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<Rss>Guest Denied</Rss>\r\n");
}
}
else
{
if (!Utils.InArray("7", forum.Viewperm, ","))
{
return("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<Rss>Guest Denied</Rss>\r\n");
}
}
StringBuilder sbRss = new StringBuilder("<?xml version=\"1.0\" encoding=\"utf-8\" ?>\r\n");
sbRss.Append("<?xml-stylesheet type=\"text/xsl\" href=\"rss.xsl\" media=\"screen\"?>\r\n");
sbRss.Append("<rss version=\"2.0\">\r\n");
sbRss.Append(" <channel>\r\n");
sbRss.Append(" <title>");
sbRss.Append(Utils.HtmlEncode(config.Forumtitle));
sbRss.Append(" - ");
sbRss.Append(Utils.HtmlEncode(forum.Name));
sbRss.Append("</title>\r\n");
sbRss.Append(" <link>");
sbRss.Append(forumurl);
if (config.Aspxrewrite == 1)
{
sbRss.Append("showforum-");
sbRss.Append(fid.ToString());
sbRss.Append(config.Extname);
}
else
{
sbRss.Append("showforum.aspx?forumid=");
sbRss.Append(fid.ToString());
}
sbRss.Append("</link>\r\n");
sbRss.Append(" <description>Latest 20 threads</description>\r\n");
sbRss.Append(" <copyright>Copyright (c) ");
sbRss.Append(Utils.HtmlEncode(config.Forumtitle));
sbRss.Append("</copyright>\r\n");
sbRss.Append(" <generator>");
sbRss.Append("Discuz!NT");
sbRss.Append("</generator>\r\n");
sbRss.Append(" <pubDate>");
//sbRss.Append(DateTime.Now.ToUniversalTime().ToString("ddd, dd MMM yyyy HH':'mm':'ss 'GMT'"));
sbRss.Append(DateTime.Now.ToString("r"));
sbRss.Append("</pubDate>\r\n");
sbRss.AppendFormat(" <ttl>{0}</ttl>\r\n", ttl.ToString());
IDataReader reader = DatabaseProvider.GetInstance().GetForumNewTopics(fid);
if (reader != null)
{
while (reader.Read())
{
sbRss.Append(" <item>\r\n");
sbRss.Append(" <title>");
sbRss.Append(Utils.HtmlEncode(reader["title"].ToString().Trim()));
sbRss.Append("</title>\r\n");
sbRss.Append(" <description><![CDATA[");
if (reader["message"].ToString().IndexOf("[hide]") > -1)
{
sbRss.Append("***内容隐藏***");
}
else
{
sbRss.Append(Utils.HtmlEncode(Utils.GetSubString(UBB.ClearUBB(reader["message"].ToString()), 200, "......")));
}
sbRss.Append("]]></description>\r\n");
sbRss.Append(" <link>");
sbRss.Append(Utils.HtmlEncode(forumurl));
if (config.Aspxrewrite == 1)
{
sbRss.Append("showtopic-");
sbRss.Append(reader["tid"].ToString());
sbRss.Append(config.Extname);
}
else
{
sbRss.Append("showtopic.aspx?topicid=");
sbRss.Append(reader["tid"].ToString());
}
sbRss.Append("</link>\r\n");
sbRss.Append(" <category>");
sbRss.Append(Utils.HtmlEncode(forum.Name));
sbRss.Append("</category>\r\n");
sbRss.Append(" <author>");
sbRss.Append(Utils.HtmlEncode(reader["poster"].ToString().Trim()));
sbRss.Append("</author>\r\n");
sbRss.Append(" <pubDate>");
sbRss.Append(Utils.HtmlEncode(Convert.ToDateTime(reader["postdatetime"]).ToString("r").Trim()));
sbRss.Append("</pubDate>\r\n");
sbRss.Append(" </item>\r\n");
}
reader.Close();
}
sbRss.Append(" </channel>\r\n");
sbRss.Append("</rss>");
Discuz.Cache.ICacheStrategy ics = new RssCacheStrategy();
ics.TimeOut = ttl;
cache.LoadCacheStrategy(ics);
cache.AddObject("/RSS/Forum" + fid, sbRss.ToString());
cache.LoadDefaultCacheStrategy();
return(sbRss.ToString());
}