Getting XML response back to client from ASP using XMTHTTP

[David Rancour]

Hi,

I am working on my first cXML implementation and have a question. I have
setup a test VB program to send a request to my ASP page. Seems like I can
get the xml sent to the ASP, as I can return it immediately and my VB program
has the correct response.xml. Here's the code from my VB program:

Set oHTTP = New MSXML2.XMLHTTP30

Set fso = CreateObject("scripting.filesystemobject")
Set file = fso.OpenTextFile("c:\request.xml")

'Read in xml from file
Do While Not file.AtEndOfStream
xmlRequest = xmlRequest & file.readline
Loop
file.Close
Set file = Nothing
Set fso = Nothing

Set xmlDOM = New MSXML2.DOMDocument

'Load xml into dom
xmlDOM.loadXML xmlRequest

oHTTP.open "POST", "http://drancour/cxml/punchoutrequest.asp", False
oHTTP.setRequestHeader "Content-Type", "text/xml"
oHTTP.send xmlDOM.xml

Now, when on the serverside ASP page, I have to receive this xml, grab a
couple of nodes (username and password fields). Then evaluate those and return
cXML indicating whether or not the login credentials are valid. However,
if login is successful I seem to be only able to evaluate the oHTTP object's
responseBody or responseText to get the xml from my web page. I would like
to populate the responseXML property from the page so that it can be loaded
into a dom on the client side once it is received. Here is the ASP code:

set xmlDOM = server.createobject("msxml2.domdocument")

xmlDOM.async = false
xmlDOM.load(request)

'Evaluate the login info....

'Assume login is OK, this would be xml to be returned to client
xmlReturn = "<?xml version=""1.0"" encoding=""UTF-8"" ?>" & _
"<!DOCTYPE cXML (View Source for full doctype...)>" & _
"<cXML payloadID=""456778199@cxml.workchairs.com"" xml:lang=""enUS"" timestamp=""19990312T18:39:0908:00""
version=""1.1.009"">" & _
"<Response>" & _
"<Status code=""200"" text=""OK"" />" & _
"<PunchOutSetupResponse>" & _
"<StartPage>" & _
"<URL>http://premier.workchairs.com/store?23423SDFSDF23</URL>" & _
"</StartPage>" & _
"</PunchOutSetupResponse>" & _
"</Response>" & _
"</cXML>"

xmldom.loadxml xmlReturn
Response.ContentType = "text/xml"
response.binarywrite xmldom.xml
response.end

Again, this only results in being able to grab the responseText property
of the XMLHTTP object on the client side. What do I do in the ASP to get
the xml to be available to the client in the responseXML property of the
XMLHTTP object??

Thanks in advance!!

David Rancour
Web Developer

[Russell Jones]

David:

All you need to do is to change the reponse type to "text/xml". In my
experience, you don't need to use the BinaryWrite method to return the XML
(although that works). Because the DOMDocument.xml property is a string, the
Response.Write method works just fine.

Russell Jones
Sr. Web Development Editor,
DevX.com


"David Rancour" <drancour@columbus.rr.com> wrote in message
news:3aed9d89$1@news.devx.com...
>
> Hi,
>
> I am working on my first cXML implementation and have a question. I have
> setup a test VB program to send a request to my ASP page. Seems like I can
> get the xml sent to the ASP, as I can return it immediately and my VB
program
> has the correct response.xml. Here's the code from my VB program:
>
> Set oHTTP = New MSXML2.XMLHTTP30
>
> Set fso = CreateObject("scripting.filesystemobject")
> Set file = fso.OpenTextFile("c:\request.xml")
>
> 'Read in xml from file
> Do While Not file.AtEndOfStream
> xmlRequest = xmlRequest & file.readline
> Loop
> file.Close
> Set file = Nothing
> Set fso = Nothing
>
> Set xmlDOM = New MSXML2.DOMDocument
>
> 'Load xml into dom
> xmlDOM.loadXML xmlRequest
>
> oHTTP.open "POST", "http://drancour/cxml/punchoutrequest.asp", False
> oHTTP.setRequestHeader "Content-Type", "text/xml"
> oHTTP.send xmlDOM.xml
>
> Now, when on the serverside ASP page, I have to receive this xml, grab a
> couple of nodes (username and password fields). Then evaluate those and
return
> cXML indicating whether or not the login credentials are valid. However,
> if login is successful I seem to be only able to evaluate the oHTTP
object's
> responseBody or responseText to get the xml from my web page. I would like
> to populate the responseXML property from the page so that it can be
loaded
> into a dom on the client side once it is received. Here is the ASP code:
>
> set xmlDOM = server.createobject("msxml2.domdocument")
>
> xmlDOM.async = false
> xmlDOM.load(request)
>
> 'Evaluate the login info....
>
> 'Assume login is OK, this would be xml to be returned to client
> xmlReturn = "<?xml version=""1.0"" encoding=""UTF-8"" ?>" & _
> "<!DOCTYPE cXML (View Source for full doctype...)>" & _
> "<cXML payloadID=""456778199@cxml.workchairs.com"" xml:lang=""enUS""
timestamp=""19990312T18:39:0908:00""
> version=""1.1.009"">" & _
> "<Response>" & _
> "<Status code=""200"" text=""OK"" />" & _
> "<PunchOutSetupResponse>" & _
> "<StartPage>" & _
> "<URL>http://premier.workchairs.com/store?23423SDFSDF23</URL>" & _
> "</StartPage>" & _
> "</PunchOutSetupResponse>" & _
> "</Response>" & _
> "</cXML>"
>
> xmldom.loadxml xmlReturn
> Response.ContentType = "text/xml"
> response.binarywrite xmldom.xml
> response.end
>
> Again, this only results in being able to grab the responseText property
> of the XMLHTTP object on the client side. What do I do in the ASP to get
> the xml to be available to the client in the responseXML property of the
> XMLHTTP object??
>
> Thanks in advance!!
>
> David Rancour
> Web Developer

[David Rancour]

Thanks Russell,

But I am already setting the response type to text/xml in the intial post.
Also, how else can I return the XML without using BinaryWrite method? Do
I just use response.write(xmldoc)??

Thanks again!

"Russell Jones" <arj1@northstate.net> wrote:
>David:
>
>All you need to do is to change the reponse type to "text/xml". In my
>experience, you don't need to use the BinaryWrite method to return the XML
>(although that works). Because the DOMDocument.xml property is a string,
the
>Response.Write method works just fine.
>
>Russell Jones
>Sr. Web Development Editor,
>DevX.com
>
>
>"David Rancour" <drancour@columbus.rr.com> wrote in message
>news:3aed9d89$1@news.devx.com...
>>
>> Hi,
>>
>> I am working on my first cXML implementation and have a question. I have
>> setup a test VB program to send a request to my ASP page. Seems like I
can
>> get the xml sent to the ASP, as I can return it immediately and my VB
>program
>> has the correct response.xml. Here's the code from my VB program:
>>
>> Set oHTTP = New MSXML2.XMLHTTP30
>>
>> Set fso = CreateObject("scripting.filesystemobject")
>> Set file = fso.OpenTextFile("c:\request.xml")
>>
>> 'Read in xml from file
>> Do While Not file.AtEndOfStream
>> xmlRequest = xmlRequest & file.readline
>> Loop
>> file.Close
>> Set file = Nothing
>> Set fso = Nothing
>>
>> Set xmlDOM = New MSXML2.DOMDocument
>>
>> 'Load xml into dom
>> xmlDOM.loadXML xmlRequest
>>
>> oHTTP.open "POST", "http://drancour/cxml/punchoutrequest.asp", False
>> oHTTP.setRequestHeader "Content-Type", "text/xml"
>> oHTTP.send xmlDOM.xml
>>
>> Now, when on the serverside ASP page, I have to receive this xml, grab
a
>> couple of nodes (username and password fields). Then evaluate those and
>return
>> cXML indicating whether or not the login credentials are valid. However,
>> if login is successful I seem to be only able to evaluate the oHTTP
>object's
>> responseBody or responseText to get the xml from my web page. I would
like
>> to populate the responseXML property from the page so that it can be
>loaded
>> into a dom on the client side once it is received. Here is the ASP code:
>>
>> set xmlDOM = server.createobject("msxml2.domdocument")
>>
>> xmlDOM.async = false
>> xmlDOM.load(request)
>>
>> 'Evaluate the login info....
>>
>> 'Assume login is OK, this would be xml to be returned to client
>> xmlReturn = "<?xml version=""1.0"" encoding=""UTF-8"" ?>" & _
>> "<!DOCTYPE cXML (View Source for full doctype...)>" & _
>> "<cXML payloadID=""456778199@cxml.workchairs.com"" xml:lang=""enUS""
>timestamp=""19990312T18:39:0908:00""
>> version=""1.1.009"">" & _
>> "<Response>" & _
>> "<Status code=""200"" text=""OK"" />" & _
>> "<PunchOutSetupResponse>" & _
>> "<StartPage>" & _
>> "<URL>http://premier.workchairs.com/store?23423SDFSDF23</URL>" & _
>> "</StartPage>" & _
>> "</PunchOutSetupResponse>" & _
>> "</Response>" & _
>> "</cXML>"
>>
>> xmldom.loadxml xmlReturn
>> Response.ContentType = "text/xml"
>> response.binarywrite xmldom.xml
>> response.end
>>
>> Again, this only results in being able to grab the responseText property
>> of the XMLHTTP object on the client side. What do I do in the ASP to get
>> the xml to be available to the client in the responseXML property of the
>> XMLHTTP object??
>>
>> Thanks in advance!!
>>
>> David Rancour
>> Web Developer
>
>

[Russell Jones]

> But I am already setting the response type to text/xml in the intial post.
Sorry, so you are.

When I eliminate this line:
"<!DOCTYPE cXML (View Source for full doctype...)>" & _
your code works for me. That line is not valid. If I replace it with a valid
DOCTYPE tag, it works just fine.

> Also, how else can I return the XML without using BinaryWrite method? Do
> I just use response.write(xmldoc)??
To answer your question, just use Response.Write xmlDoc.xml.

In your client code, check for load errors:
(the variable xhttp in the following code is an XMLHTTPRequest object).
if xhttp.ResponseXML.parseerror.reason <> "" then
' show the error
msgbox "Error loading XML" & vbcrlf & _
"Reason: " & xhttp.ResponseXML.parseerror.reason & vbcrlf & _
"Line: " & xhttp.ResponseXML.parseerror.line & vbcrlf & _
"Position: " & xhttp.ResponseXML.parseerror.linepos
else set xml = xhttp.ResponseXML
' no error
msgbox xml.xml
end if


"David Rancour" <drancour@columbus.rr.com> wrote in message
news:3aedac8b@news.devx.com...
>
> Thanks Russell,
>
> But I am already setting the response type to text/xml in the intial post.
> Also, how else can I return the XML without using BinaryWrite method? Do
> I just use response.write(xmldoc)??
>
> Thanks again!
>
> "Russell Jones" <arj1@northstate.net> wrote:
> >David:
> >
> >All you need to do is to change the reponse type to "text/xml". In my
> >experience, you don't need to use the BinaryWrite method to return the
XML
> >(although that works). Because the DOMDocument.xml property is a string,
> the
> >Response.Write method works just fine.
> >
> >Russell Jones
> >Sr. Web Development Editor,
> >DevX.com
> >
> >
> >"David Rancour" <drancour@columbus.rr.com> wrote in message
> >news:3aed9d89$1@news.devx.com...
> >>
> >> Hi,
> >>
> >> I am working on my first cXML implementation and have a question. I
have
> >> setup a test VB program to send a request to my ASP page. Seems like I
> can
> >> get the xml sent to the ASP, as I can return it immediately and my VB
> >program
> >> has the correct response.xml. Here's the code from my VB program:
> >>
> >> Set oHTTP = New MSXML2.XMLHTTP30
> >>
> >> Set fso = CreateObject("scripting.filesystemobject")
> >> Set file = fso.OpenTextFile("c:\request.xml")
> >>
> >> 'Read in xml from file
> >> Do While Not file.AtEndOfStream
> >> xmlRequest = xmlRequest & file.readline
> >> Loop
> >> file.Close
> >> Set file = Nothing
> >> Set fso = Nothing
> >>
> >> Set xmlDOM = New MSXML2.DOMDocument
> >>
> >> 'Load xml into dom
> >> xmlDOM.loadXML xmlRequest
> >>
> >> oHTTP.open "POST", "http://drancour/cxml/punchoutrequest.asp", False
> >> oHTTP.setRequestHeader "Content-Type", "text/xml"
> >> oHTTP.send xmlDOM.xml
> >>
> >> Now, when on the serverside ASP page, I have to receive this xml, grab
> a
> >> couple of nodes (username and password fields). Then evaluate those and
> >return
> >> cXML indicating whether or not the login credentials are valid.
However,
> >> if login is successful I seem to be only able to evaluate the oHTTP
> >object's
> >> responseBody or responseText to get the xml from my web page. I would
> like
> >> to populate the responseXML property from the page so that it can be
> >loaded
> >> into a dom on the client side once it is received. Here is the ASP
code:
> >>
> >> set xmlDOM = server.createobject("msxml2.domdocument")
> >>
> >> xmlDOM.async = false
> >> xmlDOM.load(request)
> >>
> >> 'Evaluate the login info....
> >>
> >> 'Assume login is OK, this would be xml to be returned to client
> >> xmlReturn = "<?xml version=""1.0"" encoding=""UTF-8"" ?>" & _
> >> "<!DOCTYPE cXML (View Source for full doctype...)>" & _
> >> "<cXML payloadID=""456778199@cxml.workchairs.com"" xml:lang=""enUS""
> >timestamp=""19990312T18:39:0908:00""
> >> version=""1.1.009"">" & _
> >> "<Response>" & _
> >> "<Status code=""200"" text=""OK"" />" & _
> >> "<PunchOutSetupResponse>" & _
> >> "<StartPage>" & _
> >> "<URL>http://premier.workchairs.com/store?23423SDFSDF23</URL>" & _
> >> "</StartPage>" & _
> >> "</PunchOutSetupResponse>" & _
> >> "</Response>" & _
> >> "</cXML>"
> >>
> >> xmldom.loadxml xmlReturn
> >> Response.ContentType = "text/xml"
> >> response.binarywrite xmldom.xml
> >> response.end
> >>
> >> Again, this only results in being able to grab the responseText
property
> >> of the XMLHTTP object on the client side. What do I do in the ASP to
get
> >> the xml to be available to the client in the responseXML property of
the
> >> XMLHTTP object??
> >>
> >> Thanks in advance!!
> >>
> >> David Rancour
> >> Web Developer
> >
> >
>

[David Rancour]

Thanks alot! This is a big help.

"Russell Jones" <arj1@northstate.net> wrote:
>> But I am already setting the response type to text/xml in the intial post.
>Sorry, so you are.
>
>When I eliminate this line:
> "<!DOCTYPE cXML (View Source for full doctype...)>" & _
>your code works for me. That line is not valid. If I replace it with a valid
>DOCTYPE tag, it works just fine.
>
>> Also, how else can I return the XML without using BinaryWrite method?
Do
>> I just use response.write(xmldoc)??
>To answer your question, just use Response.Write xmlDoc.xml.
>
>In your client code, check for load errors:
>(the variable xhttp in the following code is an XMLHTTPRequest object).
>if xhttp.ResponseXML.parseerror.reason <> "" then
> ' show the error
> msgbox "Error loading XML" & vbcrlf & _
> "Reason: " & xhttp.ResponseXML.parseerror.reason & vbcrlf & _
> "Line: " & xhttp.ResponseXML.parseerror.line & vbcrlf & _
> "Position: " & xhttp.ResponseXML.parseerror.linepos
>else set xml = xhttp.ResponseXML
> ' no error
> msgbox xml.xml
>end if
>
>
>"David Rancour" <drancour@columbus.rr.com> wrote in message
>news:3aedac8b@news.devx.com...
>>
>> Thanks Russell,
>>
>> But I am already setting the response type to text/xml in the intial post.
>> Also, how else can I return the XML without using BinaryWrite method?
Do
>> I just use response.write(xmldoc)??
>>
>> Thanks again!
>>
>> "Russell Jones" <arj1@northstate.net> wrote:
>> >David:
>> >
>> >All you need to do is to change the reponse type to "text/xml". In my
>> >experience, you don't need to use the BinaryWrite method to return the
>XML
>> >(although that works). Because the DOMDocument.xml property is a string,
>> the
>> >Response.Write method works just fine.
>> >
>> >Russell Jones
>> >Sr. Web Development Editor,
>> >DevX.com
>> >
>> >
>> >"David Rancour" <drancour@columbus.rr.com> wrote in message
>> >news:3aed9d89$1@news.devx.com...
>> >>
>> >> Hi,
>> >>
>> >> I am working on my first cXML implementation and have a question. I
>have
>> >> setup a test VB program to send a request to my ASP page. Seems like
I
>> can
>> >> get the xml sent to the ASP, as I can return it immediately and my
VB
>> >program
>> >> has the correct response.xml. Here's the code from my VB program:
>> >>
>> >> Set oHTTP = New MSXML2.XMLHTTP30
>> >>
>> >> Set fso = CreateObject("scripting.filesystemobject")
>> >> Set file = fso.OpenTextFile("c:\request.xml")
>> >>
>> >> 'Read in xml from file
>> >> Do While Not file.AtEndOfStream
>> >> xmlRequest = xmlRequest & file.readline
>> >> Loop
>> >> file.Close
>> >> Set file = Nothing
>> >> Set fso = Nothing
>> >>
>> >> Set xmlDOM = New MSXML2.DOMDocument
>> >>
>> >> 'Load xml into dom
>> >> xmlDOM.loadXML xmlRequest
>> >>
>> >> oHTTP.open "POST", "http://drancour/cxml/punchoutrequest.asp", False
>> >> oHTTP.setRequestHeader "Content-Type", "text/xml"
>> >> oHTTP.send xmlDOM.xml
>> >>
>> >> Now, when on the serverside ASP page, I have to receive this xml, grab
>> a
>> >> couple of nodes (username and password fields). Then evaluate those
and
>> >return
>> >> cXML indicating whether or not the login credentials are valid.
>However,
>> >> if login is successful I seem to be only able to evaluate the oHTTP
>> >object's
>> >> responseBody or responseText to get the xml from my web page. I would
>> like
>> >> to populate the responseXML property from the page so that it can be
>> >loaded
>> >> into a dom on the client side once it is received. Here is the ASP
>code:
>> >>
>> >> set xmlDOM = server.createobject("msxml2.domdocument")
>> >>
>> >> xmlDOM.async = false
>> >> xmlDOM.load(request)
>> >>
>> >> 'Evaluate the login info....
>> >>
>> >> 'Assume login is OK, this would be xml to be returned to client
>> >> xmlReturn = "<?xml version=""1.0"" encoding=""UTF-8"" ?>" & _
>> >> "<!DOCTYPE cXML (View Source for full doctype...)>" & _
>> >> "<cXML payloadID=""456778199@cxml.workchairs.com"" xml:lang=""enUS""
>> >timestamp=""19990312T18:39:0908:00""
>> >> version=""1.1.009"">" & _
>> >> "<Response>" & _
>> >> "<Status code=""200"" text=""OK"" />" & _
>> >> "<PunchOutSetupResponse>" & _
>> >> "<StartPage>" & _
>> >> "<URL>http://premier.workchairs.com/store?23423SDFSDF23</URL>" & _
>> >> "</StartPage>" & _
>> >> "</PunchOutSetupResponse>" & _
>> >> "</Response>" & _
>> >> "</cXML>"
>> >>
>> >> xmldom.loadxml xmlReturn
>> >> Response.ContentType = "text/xml"
>> >> response.binarywrite xmldom.xml
>> >> response.end
>> >>
>> >> Again, this only results in being able to grab the responseText
>property
>> >> of the XMLHTTP object on the client side. What do I do in the ASP to
>get
>> >> the xml to be available to the client in the responseXML property of
>the
>> >> XMLHTTP object??
>> >>
>> >> Thanks in advance!!
>> >>
>> >> David Rancour
>> >> Web Developer
>> >
>> >
>>
>
>