Currently only FreemarkerParagraphRenderer supports ActionBasedParagraph. It makes impossible to use modules such as Forum or Public User Registration with JSP templates.

I've attached a new version of JspParagraphRenderer that does the trick. It pushes the action and its result in the attributes of the context. However it isn't a good patch because I've copied the action handling related code from the FreemarkerParagraphRenderer. A clean solution would imply refactoring the two renderers for sharing the action handling related code.