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Note: I have not been able to make a successful call using client code generated from the wsdl in either java or c# , c# or flex 3/actionscript 3 (see https://issues.apache.org/jira/browse/OFBIZ-3385)
As I have not been able to make a call using generated client code, I have gone for the dynamically generated client using AXIOM. To find out about AXIOM, I read Chapter 3 and Chapter 9 from http://www.packtpub.com/creating-web-services-with-apache-axis-2/book, however, there are probably free tutorials available online.
UPDATE: since r896347, I am now able to use jax-ws (in netbeans) to generate the client code to connect to ofbiz. See https://issues.apache.org/jira/browse/OFBIZ-3385 for example code.
Step 1: export service
In the service definition, set the flag export="true", for example the findPartiesById service:
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