I'm not quite sure what you mean by "interface" (you might be referring to <portType> or <service> elements), but either way, I don't know of any tools that can "automatically" generate a single WSDL definition from multiple WSDL definitions. I think your only option is to edit the WSDLs using a text/XML/WSDL editor. The simplest approach is simply to create a new WSDL definition and import the pre-existing WSDL definitions. For example:
<w:definitions name="new" targetNamespace="urn:new" xmlns:w="http://schemas.xmlsoap.org/wsdl/"> <w:import namespace="urn:old1" location="http://foo.org/old1.wsdl"/> <w:import namespace="urn:old2" location="http://foo.org/old2.wsdl"/> <w:import namespace="urn:old3" location="http://foo.org/old3.wsdl"/> </w:definitions>Note that this approach won't do anything to integrate the pre-existing definitions-- it simply makes all three definitions available in a single WSDL definition.
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