In Spring MVC there seem to be two parallel class hierarchies, one with portlet, one without.
What is that? Why is it so and what should I use.
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In Spring MVC there seem to be two parallel class hierarchies, one with portlet, one without.
What is that? Why is it so and what should I use.
That’s because
The Spring documentation (Chapter 16. Portlet MVC Framework) provides more information about the differences.
To answer your last question: you should use the Portlet MVC framework if you are developing portlets (web applications to be deployed in a portal). If you are developing conventional web applications you should use the Web MVC framework.