An Introduction To XML SOAP Using ASP and VB6 - VB Client Code

(Page 4 of 5 )

Here's the entire code for your VB client:

Sub Main()
Dim objHTTP As New MSXML.XMLHTTPRequest
Dim strEnvelope As String
Dim strReturn As String
Dim objReturn As New MSXML.DOMDocument
Dim dblTax As Double
Dim strQuery As String

'Create the SOAP Envelope
strEnvelope = _
"<soap:envelope xmlns:soap=""urn:schemas-xmlsoap-org:soap.v1"">" & _
"<soap:header></soap:header>" & _
"<soap:body>" & _
"<m:getsalestax xmlns:m=""urn:myserver/soap:TaxCalculator"">" & _
"<salestotal>100</salestotal>" & _
"</m:getsalestax>" & _
"</soap:body>" & _
"</soap:envelope>"

'Set up to post to our local server
objHTTP.open "post", "http://localhost/soap.asp", False

'Set a standard SOAP/ XML header for the content-type
objHTTP.setRequestHeader "Content-Type", "text/xml"

'Set a header for the method to be called
objHTTP.setRequestHeader "SOAPMethodName", _
"urn:myserver/soap:TaxCalculator#GetSalesTax"

'Make the SOAP call
objHTTP.send strEnvelope

'Get the return envelope
strReturn = objHTTP.responseText

'Load the return envelope into a DOM
objReturn.loadXML strReturn

'Query the return envelope
strQuery = _
"SOAP:Envelope/SOAP:Body/m:GetSalesTaxResponse/SalesTax"
dblTax = objReturn.selectSingleNode(strQuery).Text

Debug.Print dblTax
End Sub

ASP Server Code
This code resides in an ASP – Soap.asp, in the root directory of the web server.

<%
Set objReq = Server.CreateObject("Microsoft.XMLDOM")

'Load the request into XML DOM
objReq.Load Request

'Query the DOM for the input parameter
strQuery = "SOAP:Envelope/SOAP:Body/m:GetSalesTax/SalesTotal"
varSalesTotal = objReq.SelectSingleNode(strQuery).Text

'Calculate the sales tax
varSalesTax = varSalesTotal * 0.04

'Prepare the return envelope
strTmp = _
"<soap:envelope xmlns:soap=""urn:schemas-xmlsoap-org:soap.v1"">" & _
"<soap:header></soap:header>" & _
"<soap:body>" & _
"<m:getsalestaxresponse xmlns:m=""urn:myserver/soap:TaxCalc"">" & _
"<salestax>" & varSalesTax & "</salestax>" & _
"</m:getsalestaxresponse>" & _
"</soap:body>" & _
"</soap:envelope>"

'Write the return envelope
Response.Write strTmp
%>

Next: Conclusion >>
 

More ASP Articles
More By ComponentSource Team

Comments On: An Introduction To XML SOAP Using ASP and VB6

>>> Be the FIRST to comment on this article!