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The generated service (JSONService.aar) gets copied to the <AS_HOME>/repository/deployment/server/axis2services directory automatically. If you start the WSO2 Application Server, and on the Main menu, under Services, click List the Deployed Services window will appear with the JSONService service listed deployed.
The WSDL for the service should be viewable at: http://<host>:<port>/services/JSONService?wsdl
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