Question

ASP trouble reading an XML file

Asked by: mastallama

I'm trying to read an XML file using ASP (and I'm using the example from here: http://www.15seconds.com/issue/990527.htm ) but I keep getting 0 items returned.  I'm doing a  Response.Write(noOfHeadlines) and getting zero.  Does anyone have any ideas?

Here's my code...

<html>
<head>
<title>Read XML Test</title>
</head>

<body>
 <%
 Set objXML = Server.CreateObject("Microsoft.XMLDOM")
 Set objLst = Server.CreateObject("Microsoft.XMLDOM")
 Set objHdl = Server.CreateObject("Microsoft.XMLDOM")

 objXML.async = False
 objXML.Load (Server.MapPath("mostRecentScriptingNews.xml"))

' If objXML.parseError.errorCode <> 0 Then
'       handle the error
' End If

 Set objLst = objXML.getElementsByTagName("item")

 noOfHeadlines = objLst.length
 %>

 <HTML><BODY>
 <H1>Scripting News Headlines</H1>

 <%
 Response.Write(noOfHeadlines)
 For i = 0 To (noOfHeadlines - 1)

  Set objHdl = objLst.item(i)

  Response.Write("<a href=""" & _
                  objHdl.childNodes(1).childNodes(0).text & _
                  """>" & objHdl.childNodes(0).text & _
                  "</a><br>")

 Next
 %>
</body>
</html>

And here's the XML file...
<?xml version="1.0"?>
 <!DOCTYPE scriptingNews SYSTEM
      "http://www.scripting.com/dtd/scriptingNews.dtd">
 <scriptingNews>
   <header>
     <copyright>Copyright 1997-1999 UserLand Software, Inc.
     </copyright>
     <scriptingNewsVersion>1.0</scriptingNewsVersion>
     <pubDate>Wed, 03 Mar 1999 08:00:00 GMT</pubDate>
     <lastBuildDate>Thu, 04 Mar 1999 03:37:03 GMT</lastBuildDate>
   </header>
   <item>
     <text>Wired: A Linux Car Stereo! Wow.</text>
     <link>
       <url>http://www.wired.com/news/news/technology/
            story/18236.html
       </url>
       <linetext>A Linux Car Stereo</linetext>
     </link>
   </item>
   …
   <item>
     <text>According to News.com, Hewlett-Packard will offer
           customers storage and computing on a rental basis.
     </text>
     <link>
       <url>http://www.news.com/News/Item/
            0,4,33202,00.html?st.ne.fd.mdh
       </url>
       <linetext>According to News.com</linetext>
     </link>
   </item>
 </scriptingNews>

Thanks,
MastaLlama

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Asked On
2007-04-30 at 15:26:46ID22543813
Tags

asp

,

noofheadlines

Topics

Active Server Pages (ASP)

,

Extensible Markup Language (XML)

Participating Experts
3
Points
125
Comments
7

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Answers

 

by: carl_tawnPosted on 2007-04-30 at 16:30:43ID: 19005361

Uncomment this block:

    ' If objXML.parseError.errorCode <> 0 Then
    '       handle the error
    ' End If

I may be that it is not parsing the file correctly for some reason.

 

by: steveberzinsPosted on 2007-04-30 at 16:39:48ID: 19005401

I don't think it likes the
 <!DOCTYPE scriptingNews SYSTEM "http://www.scripting.com/dtd/scriptingNews.dtd">

if I remove this line, it works fine.

with that declaration, the xml editor in visual studio is complaining about missing elements in the header, specifically  a 'docs' element, which looks like is required per the dtd.

if you can, just remove that from the xml, if you can't, I got nothin' :)

 

by: b0lsc0ttPosted on 2007-04-30 at 16:48:59ID: 19005432

Can you write the whole file?  To test this you can try this code.

objXML.Load (Server.MapPath("mostRecentScriptingNews.xml"))
Response.Write Server.HTMLEncode(objXML.xml)
Response.End

' If objXML.parseError.errorCode <> 0 Then
'       handle the error
' End If

What are the results?  Let me know if you have a question or need more information.

bol

 

by: steveberzinsPosted on 2007-04-30 at 17:10:11ID: 19005524

combining some of the ideas above.
uncomment the error handling, and enhance:

If objXML.parseError.errorCode <> 0 Then
     Response.Write objXML.ParseError.errorCode & "<br/>"
     Response.Write objXML.ParseError.reason & "<br/>"
     Response.Write objXML.ParseError.line & "<br/>"
     Response.Write objXML.ParseError.linePos & "<br/>"
     Response.Write objXML.ParseError.srcText & "<br/>"
     Response.End
 End If

gives this result.
-2146697209
No data is available for the requested resource.
0
0

it does not like the DOCTYPE entity reference in the XML, I don't know if this is a MSXML bug, or 'feature' but it doesn't like it...

 

by: steveberzinsPosted on 2007-04-30 at 17:38:18ID: 19005636

found another way to make it work. but it doesn't seem a whole lot better that removing the DOCTYPE altogether. :)

save the source of the dtd locally, in the same folder as the xml source, name it scriptingNews.dtd, and change the
<!DOCTYPE scriptingNews SYSTEM
      "http://www.scripting.com/dtd/scriptingNews.dtd">
to
<!DOCTYPE scriptingNews SYSTEM "scriptingNews.dtd">

it seems there is something about that reference not being on the local machine that the MSXML DOM stuff doesn't like.

 

by: steveberzinsPosted on 2007-04-30 at 17:48:50ID: 19005663

ahhh, might have found you're answer, after a couple tries...

add this just under creating the DOM.

objXML.setProperty "ServerHTTPRequest", True

 

by: mastallamaPosted on 2007-05-01 at 06:43:20ID: 19008021

Thanks guys!  It works great now!!!!

20120131-EE-VQP-002

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