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Submit HTTP XML request in VBA

Posted on 2015-01-21
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Last Modified: 2015-01-22
I use Authorize.Net to process credit card transactions on my website.

I am writing a small MS Access Application that I want to use to put through Refund Requests and Void Requests when someone returns a product or cancels an order.

The code I am trying to use is:

   Set objhttp = Server.CreateObject("MSXML2.ServerXMLHTTP.4.0")
   objhttp.Open method, url, False
   objhttp.Send myDataString
   
   outdata = objhttp.responseText
   Set objhttp = Nothing

When I run this code I get the following error.

Run-time error 424
object required.

Any help is appreciated.
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Question by:GenesisTech
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3 Comments
 
LVL 58
ID: 40563436
That create object call doesn't look right.   Not in front of a computer right now,  but the http stuff is in xml 6.0 lib if I'm not mistaken
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LVL 58

Accepted Solution

by:
Jim Dettman (Microsoft MVP/ EE MVE) earned 2000 total points
ID: 40563556
Here's the code I use with Authorize.net.

Jim.

                  ' Set the correct URL
                  'strPostURL = "https://test.authorize.net/gateway/transact.dll"
110               strPostURL = "https://secure.authorize.net/gateway/transact.dll"
                  'strPostURL = "https://developer.authorize.net/tools/paramdump/index.php"

120               strPostSting = ""
125        strPostSting = strPostSting & "x_login=" & URLEncode(strAPILogin) & "&"
126       strPostSting = strPostSting & "x_tran_key=" & URLEncode(strTransactionKey) & "&"
                  'For debugging.
                  'strPostSting = strPostSting & "x_test_request=" & URLEncode("TRUE") & "&"
130               strPostSting = strPostSting & "x_version=" & URLEncode("3.1") & "&"
140               strPostSting = strPostSting & "x_delim_data=" & URLEncode("TRUE") & "&"
150               strPostSting = strPostSting & "x_delim_char=" & URLEncode("|") & "&"
160               strPostSting = strPostSting & "x_relay_response=" & URLEncode("FALSE") & "&"
170               strPostSting = strPostSting & "x_email_customer=" & URLEncode("FALSE") & "&"

180               strPostSting = strPostSting & "x_type=" & URLEncode("PRIOR_AUTH_CAPTURE") & "&"
190               strPostSting = strPostSting & "x_trans_id=" & URLEncode(rs!CCTransactionID) & "&"

                  ' Additional fields can be added here as outlined in the AIM integration
                  ' guide at: http://developer.authorize.net
200               strPostSting = left(strPostSting, Len(strPostSting) - 1)

                  ' We use xmlHTTP to submit the input values and record the response
                  Dim objRequest As New MSXML2.XMLHTTP
210               objRequest.Open "POST", strPostURL, False
220               objRequest.Send strPostSting
230               strPostResponse = objRequest.responseText
                  'Debug.Print strPostResponse
240               Set objRequest = Nothing 

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Author Closing Comment

by:GenesisTech
ID: 40565489
Jim,

Worked like a charm. Easy peasy - no problems.

I had originally snagged my code from a Classic ASP application and there were a couple of things different because it was executing from a server.

Anyway, your code worked 1st time. Awesome.

Thank you for your help!
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