how web applications communicate each other in struts?

I have two web applications in web application server. 开发者_开发问答i want to get data from one application to another. how do i do in Struts. i know that it is possible by webservices. But, is there anyway that i could get it using struts?.

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Use query string to pass data using request parameters.

/action.do?varA=1&var2=3

This'll work for simple cases. For complex requirements/exchange please use Web Services or other integration technologies.