Consider:
When I create a simple Maven project in Eclipse I am getting this error:
web.xml is missing and
Right click on the project --> New --> Other --> Standard Deployment Descriptor(web.xml)
project --> New --> Other --> Standard Deployment Descriptor(web.xml)
then press Next it will create WEB-INF folder with a web.xml file inside.
WEB-INF
web.xml
That's it done.