Open the file in the upper right corner of the idea - create a new project - select the java module
Next step - Naming - Next step
It is blank after opening
to this point. Right-click and select untitled to open Add Framework Support
Select the web application
Be sure to check Create web.xml and click OK
next
Find Add Configuration in the upper right corner - click
Find the + sign in the upper right corner
Find Tomcat - choose local
Configure the apache-tomcat file that you configured yourself (go to the official download for the version).
Click again to modify, and an index.jsp file will be automatically generated, click to run the browser to display the text and it will be ok
A complete web project is created.
Newbie posting, please take care