You need to generate a client (I suppose you use axis2/soap) using the axis2-tools (wsdl2java). Then you can simply instantiate the client in one of your business logic classes and consume the result.
Using wsdl2java can be quite tedious to run, if you have maven, there is a wsdl2java converter plugin.
Also, I suggest you put the wsdl2java in it's own project, as it should not change regularly.
Spring may be handy to configure the axis server URL and inject a client into your code, but is not required to run the axis2 client.