Is any sample code available that implements the cXML standard?
The cXML.org group does not itself provide example implementation of any portion of the cXML protocol except within the documentation sets we publish. However, member company Ariba, Inc. has a site containing many examples. Please head to https://knowledge.ariba.com/supplier and register to view this information. The “PunchOut Source code examples” section is probably most relevant to your question. That section includes ASP, Java, Perl and ColdFusion examples for a PunchOut site.