Delete that war file from webapps/
directory. Then open link http://localhost:8080/
in your web browser. Click Tomcat Manager then enter user name and password. In next page you can see one option called "WAR file to deploy". Select your war file from there and click "deploy" button.
If you want auto deployment when you copy files to webapp/
directory. Then make sure that you server.xml
file contains the following values:
autoDeploy="true"
unpackWARs="true"
Just search these values in your server.xml
file and edit values as shown above
For more info see Deploy A New Application from a Local Path.