When I create a Java Web project in NetBeans and select a Framework, in this case Spring Web MVC, only two options appear:
You can do this in Netbeans:
Download the Spring Framework you need from here
Extract the contents of the archive and copy the contents of the lib directory to your netbeans location e.g /home/stanley/netbeans-8.2/java/modules/ext/spring-(version) e.g 5.1.4
On your netbeans go to Tools > Libraries > New Library
Name your Library as Spring Framework (version) e.g 5.1.4 and add all the jars from the location in 2 above.
Restart your netbeans application.
You should have the new Framework as shown in the diagram below: