I don't know what to do, there are some .xx webpages on our web site, familiar with Java friends know to use a new servlet technology. .vm is the application of Velocity ,.DO is the application of Struts, .ATY is the application of the webwork. Detailed consideration is actually the extension of servlet technology, and the extension of different applications is parsed by defining their own servlet. It is really not a simple file extension to use it, it is a new open source revelation. More and more open source projects enters our life, we can find something from it.
JSP is a language we are familiar with, he can nested Java code directly on the page. Script, Tag tag. We are increasingly found in the application, we need to use the new MVC mode web framework. Struts is expanded by JSP / HTML by extending servlet; webwork is a Struts lightweight MVC application, extending servlet's dispatch mechanism is available to WebWork via Velocity TAG implementation display, WebWork2 is not only available in web layer; Velocity is a template frame that can be applied to the web layer or run in the application layer.
I believe that open source brings us more than just thinking, we can learn from, we will have an impulse who wants to create, we will also join the open source army.
