Asp生成RSS的类

RssHead=RssHead&"<rss>"
RssHead=RssHead&"<channel>"
RssHead=RssHead&"<title>"&WebName&"</title>"
RssHead=RssHead&"<link>"&WebUrl&"</link>"
RssHead=RssHead&"<description>"&WebDes&"</description>"
End Property

Private Property Get RssBottom()
RssBottom="</channel>"
RssBottom=RssBottom&"</rss>"
End Property

Public Sub ShowRss()
On Error resume Next
Dim Rs
Dim ShowInfoUrl,ShowContent,Content
If TypeName(Conn)<>"Connection" Then Er=True:Errmsg="Connection对象有误"
If Sql="" or isnull(Sql)="" or isempty(Sql)="" Then Er=True:Errmsg="没有可执行的Sql语句"
If WebName="" or isnull(WebName)="" or isempty(WebName)="" Then Er=True:Errmsg="请设置RSS标题"
If WebUrl="" or isnull(WebUrl)="" or isempty(WebUrl)="" Then Er=True:Errmsg="请设置网站的链接"
If InfoUrl="" or isnull(InfoUrl)="" or isempty(InfoUrl)="" Then Er=True:Errmsg="请设置链接信息"
If PageType="" or isnull(PageType)="" or isempty(PageType)="" Then Er=True:Errmsg="请设置链接类型"
Set Rs=Server.CreateObject("ADODB.RecordSet")
Rs.Open Sql,Conn,1,1
If Err Then
Er=true
Errmsg="数据库未能打开
请检查您的Sql语句是否正确"
Exit Sub
End If

Response.Charset = "gb2312"
Response.ContentType="text/xml"
Response.Write(RssHead)
For i =1 to MaxInfo
'*****************************
ShowInfoUrl=InfoUrl
If ShowInfoUrl="" or isnull(ShowInfoUrl) or isempty(ShowInfoUrl) Then
ShowInfoUrl="#"
Else
If PageType Then ShowInfoUrl=ShowInfoUrl&Rs(0) Else ShowInfoUrl=ShowInfoUrl&Rs(4)
End If
'*****************************
AllContent=LoseHtml(Rs(2))
AllContentLen=byteLen(AllContent)
ShowContent=int(ShowContentLen)
If ShowContentType=0 Then ShowContent=AllContentLen*ShowContent/100
Content=Server.HTMLEncode(titleb(AllContent,ShowContent))
Response.Write("<item>")
Response.Write("<title>")
Response.Write(Rs(1))
Response.Write("</title>")
Response.Write("<link>")
Response.Write(ShowInfoUrl)
Response.Write("</link>")
Response.Write("<description>")
Response.Write(Content)
Response.Write("</description>")
Response.Write("<pubDate>")
Response.Write(return_RFC822_Date(Rs(3),"GMT"))
Response.Write("</pubDate>")
Response.Write("</item>")
If Rs.Eof or i>cint(MaxInfo) Then Exit For
Rs.MoveNext
Next
Response.Write(RssBottom)
End Sub

Function LoseHtml(ContentStr)
Dim ClsTempLoseStr,regEx
ClsTempLoseStr = Cstr(ContentStr)
Set regEx = New RegExp
regEx.Pattern = "<\/*[^<>]*>"
regEx.IgnoreCase = True
regEx.Global = True
ClsTempLoseStr = regEx.Replace(ClsTempLoseStr,"")
LoseHtml = ClsTempLoseStr
End function

Function return_RFC822_Date(byVal myDate, byVal TimeZone)
Dim myDay, myDays, myMonth, myYear
Dim myHours, myMinutes, mySeconds

myDate = CDate(myDate)
myDay = EnWeekDayName(myDate)
myDays = Right("00" & Day(myDate),2)
myMonth = EnMonthName(myDate)
myYear = Year(myDate)
myHours = Right("00" & Hour(myDate),2)
myMinutes = Right("00" & Minute(myDate),2)
mySeconds = Right("00" & Second(myDate),2)


return_RFC822_Date = myDay&", "& _
myDays&" "& _
myMonth&" "& _
myYear&" "& _
myHours&":"& _
myMinutes&":"& _
mySeconds&" "& _
" " & TimeZone
End Function
Function EnWeekDayName(InputDate)
Dim Result
Select Case WeekDay(InputDate,1)
Case 1:Result="Sun"
Case 2:Result="Mon"
Case 3:Result="Tue"
Case 4:Result="Wed"

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