This week's book giveaway is in the OCAJP forum. We're giving away four copies of Programmer's Guide to Java SE 8 Oracle Certified Associate (OCA) and have Khalid A Mughal & Rolf W Rasmussen on-line! See this thread for details.
S2.1 sets the action suffix to ",.action" allowing blank ends. You can do the same thing yourself, although IIRC that has caused some issues with JS/CSS mapping. Or use the Convention and/or RESTful plugin.