This short blog shows you where to get the wsdl file for the Web Service Task in SSIS.
Once you created a HHTP Connection Manager for your Web Service then you will be in the myth on where the hell can I get the wsdl file?
If you follow this link https://docs.microsoft.com/en-us/sql/integration-services/control-flow/web-service-task-editor-general-page to download the wsdl file then you will get yourself kill.
I am not sure able Java Web Service but for Web Services that created using Visual Studio then you can get the wsdl file by adding ?WSDL at the back of asmx for example you have the following link:
in order to get the wsdl then you will do:
Save the file as wsdl then point your Web Service Task Editor to it.