title: How can i determine which servlet spec version a java WAR file uses?
body: <p>I've got a WAR that i need to deploy with TomCat, but i'm not sure which version of the servlet spec the WAR file uses.</p>
  
  <p>According to apache's site (<a href="http://tomcat.apache.org/whichversion.html" rel="nofollow noreferrer">http://tomcat.apache.org/whichversion.html</a>) i need to download a different version according to which spec the WAR file uses.</p>
  
  <p>Is there any way to tell by unzipping the WAR file and looking at some config file?</p>