When comparing Spring-boot vs Apache Wicket, the Slant community recommends Spring-boot for most people. In the question“What are the best Java web frameworks?” Spring-boot is ranked 2nd while Apache Wicket is ranked 8th. The most important reason people chose Spring-boot is:
Boot is just a thin configuration layer over Spring Framework, as such it inherits all the strengths of Spring.
Specs
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Pros

Pro Inherits all of Spring's strengths
Boot is just a thin configuration layer over Spring Framework, as such it inherits all the strengths of Spring.

Pro Preconfigured starters

Pro Fast prototyping
Spring boot is built for fast prototyping.

Pro Kick down to Spring
Pro Easy way to create reusable panels or layouts
So it is easy to create, maintain or modify a consistent corporate design across all pages.
Pro Separation of code and layout
The HTML templates contain IDs that are references in Java code. There is no code in the templates.
Pro Valid links in template can be converted to valid links in output html
That way the IDE, e.g. IDEA can verify the links already in the templates and hence there are less bad links.
Pro No configuration mess
Nearly everything is handled in Java code.
Pro Human-friendly URLs
Cons
Con Lacking in UI development
While actually very good and with a very complete and rich feature set to develop and maintain code on the server side, it still doesn't provide any rich framework for building good user interfaces.
Con Newer versions might break existing code
