Servlet in a .jar file? AJAX access?

[David Smith <dns4 (at) cornell.edu>]

Reading the rest of your message, regarding the AJAX equivalent of  
jsp:useBean, you'll need a servlet that can respond to AJAX requests for 
session bean information handing back XML fragments with session data in 
them.  Then your AJAX code on the client would use that to pull XML 
fragments containing session bean data.  Might even want the servlet to 
do the reverse as well and process GET or POST requests to update 
session info.

--David

David Smith wrote:
> Let's remove AJAX from the equation and take a look at it.  AJAX is 
> client side code acting on behalf of the user, so it should be 
> regarded essentially the same as the browser itself when it comes to 
> object access.  Where people tend to get confused is in where the code 
> is being executed -- on the server or on the client.
>
> If your "servlet" is executing on the server, than access from AJAX is 
> no different than access from your web browser.  Whether the servlet 
> is in a jar or not makes no more difference than if you accessed the 
> servlet via the browser's address bar.  Place the jar in WEB-INF/lib, 
> define the servlet and it's url mapping in web.xml; all done.
>
> If your "servlet" is executing on the client within the browser (ie an 
> applet) -- then it needs to be stored outside of the WEB-INF 
> directory, but still inside your webapp and you don't need to touch 
> the WEB-INF/web.xml file for anything.  Just need to setup the correct 
> applet tags in your web pages.
>
> --David
>
> Jon Yeargers wrote:
> > Is it possible to put a servlet in a .jar file and be able to access 
> > it via AJAX?
> >
> > I have some support servlets that I want to share via a common 
> > library. To this point Ive only been putting session beans in there. 
> > Its easy to point to those using '<jsp:usebean' tags and entries in 
> > 'web.xml'. Can I do something similar to a servlet such that I can 
> > get to it via an XMLHttpRequest object?
> >
> > Jon
> >
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