Please change DHIS2 to dhis2 because the connection.url is usually case-sensitive.
If that doesn’t work please share the catalina.out log (without the sensitive info…) & check the other points from your Arabic post,
Did you try http://localhost:8080? What manual did you use for the installation, please? and Please make sure you execute the commands with chown in this manual: Installation - DHIS2 Documentation