How to redeploy war file in tomcat without deleting/undeploy the old application?
<p>I already have a working Tomcat Server with Web Manager where I can deploy my WAR file.</p>

<p>The WAR file contains my web application and this web application has a feature where user can upload images into one of it's folder.</p>

<p>The problem is when I need to update the web application using a new WAR file.</p>

<p>When I upload it through Tomcat manager. It says WAR file already exist.
I have to UNDEPLOY it first before I can upload the updated WAR.</p>

<p>I don't want to do this UNDEPLOY process because it will delete the application along with all the images that user already uploaded.</p>

<p>So, how can I update my web application without deleting those uploaded files?
Or maybe I was using the wrong approach with my application? </p>