Hi Wes,
I found a resource on the web that seems to be a simpler solution:
InitialContext ic = new InitialContext();
UserServiceBeanLocal userService = (UserServiceBeanLocal)
ic.lookup(UserServiceBeanLocal.class.getName());
As in the web resource I found, it was necessary to change @Local to
@Remote in the session bean for it to be found correctly.
It worked perfectly using the above.
Here is a link to the resource. What do you think of this solution?
http://www.coderanch.com/t/58279/Struts/Connecting-ejb-session-bean-from
Thanks
Robin
Wes Wannemacher wrote:
You are right, there is only one, the other one in that list is a
jboss-ejb plugin. Take a look at the source for the plugin, it is not
particularly complex and I know the author is lurking around here
somewhere. I would suggest that you do one of two things -
1. Create an interceptor, probably identical to the one in the plugin.
If you have troubles, bring them to the list, we'll help.
2. Create an object factory implementation that creates actions using
your container's semantics. Again, if you have troubles, bring 'em
back here, we'll help you.
-Wes
On Wed, Jul 15, 2009 at 9:48 AM, Robin Mannering<ro...@mtndesigns.co.uk> wrote:
Many thanks for the prompt and detailed reply.
I understand why the use of injection does not work now within a Struts2
action class.
However, there only seems one EJB plugin available, which doesn't actually
have a download available and hasn't had for some time it appears.
http://code.google.com/p/struts2ejb3/downloads/list
I'm wary to trust in a plugin that doesn't appear to be currently maintained
(available to download).
Is there anybody that is using Struts2 as the 'frontend' to an EJB 3
'backend' and what solution do you currently employ.
Thanks
Robin
Wes Wannemacher wrote:
The difference is that the container did not instantiate your struts
action, struts did. There are EJB plugins available, check the plugin
registry.
http://cwiki.apache.org/S2PLUGINS/home.html
The ones I have seen are based on injection via interceptor. I've
toyed with the notion of creating an ObjectFactory based plugin so
that struts can delegate creation of action classes to the ejb
container. This would allow for injection for more than just @EJB
(@PersistenceContext comes to mind).
The only issue is that it doesn't seem like we see much traffic on
here from ejb users. Would anyone else be interested in an
ObjectFactory based plugin? If so, would any of you also want it to
work with Spring? The interceptor-based solution works good because it
doesn't interfere with object-creation-based plugins like
spring/guice/etc.
-Wes
On Wed, Jul 15, 2009 at 9:21 AM, Robin Mannering<ro...@mtndesigns.co.uk>
wrote:
Hello,
Platform : Struts 2, EJB 3.0, Glassfish 2.1
I wish to obtain a reference to an EJB using injection.
This works fine within a servlet, but from within a Struts2 action class,
all references to injected EJB variables hold a 'null' reference.
I've included a portion of my action class below.
I'm confused as to why a Servlet has no trouble using injection as
compared
to the Struts 2 action class. Both the servlet and action class reside
in
the same Web application.
Does anybody have any ideas?
/public class UserAction extends ActionSupport implements
ServletRequestAware, SessionAware {
private static Logger logger = Logger.getLogger(SetupServlet.class);
@EJB
SetupServiceBeanLocal setupService;
@EJB
UserServiceBeanLocal userService;
...
}/
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