Is the problem with automatic deployment, 6.x 7. x sets unpackWARs = true by default, autodeploy = true
Copy war to web app, tomcat unzip and deploy, but if you copy the new war package when you stop tomcat, I expect tomcat will find the new war package.
However, the official documentation for tomcat is:
When you start, the application directory is checked, and if there are associated with it, the war package is redeploy when the updated war package exists;
The actual situation and the document aren't consistent, someone knows the problem.