Record and simulate a web app

[Youssef Mohammed]

Sorry if this not directly related to tomcat itself. I have a swing app that
communicate with backend thru a web app deployed on tomcat. For testing
purposes, we want to be able to record some http responses and later on be
able to simulate the same response when it gets the same request ( aka
simulating the web sever).  All tools we could find only record requests and
simulate the client not the sever. Any help/hint is appreciated. thnx