how to integrate wsdl files into backendless?

General
1

how to integrate wsdl files into backendless to invoke webservice?

2

I would do this:

    Generate Java "client" code for your WSDL service using any available tool Create a "service wrapper" class which implements the IBackendlessService interface Deploy your code as a Hosted service, this will automatically create REST routes and native SDKs for your service.
More information on hosted services here: https://backendless.com/documentation/api-engine/apieng_overview.htm