Convention Plugin breaks DWR integration
----------------------------------------
Key: WW-2969
URL: https://issues.apache.org/struts/browse/WW-2969
Project: Struts 2
Issue Type: Bug
Components: Plugin - Convention
Affects Versions: 2.1.6
Environment: Jetty 6.1.14 on Windows XP Pro
Struts2 2.1.6 with Convention plugin
DWR 2.0.3
Reporter: Brian Curnow
This may not be an actual bug and be "broken" this way be design. In reading
through the documentation (http://struts.apache.org/2.1.6/docs/webxml.html)
it's recommended that you map the Struts
FilterDispatcher/StrutsPrepareAndExecuteFilter to the URL pattern "/*". This
seems to work fine with what I'll call traditional Struts2 (i.e. no Convention
plugin) and also with the Convention plugin.
I'm attempting to use DWR 2.0 and their documentation has you map the
dwr-invoker (I'm using the Spring version:
org.directwebremoting.spring.DwrSpringServlet) to the URL pattern "/dwr/*"
(http://directwebremoting.org/dwr/server/servlet). This works fine in
traditional Struts2 but breaks when using the Convention plugin.
What I get when I attempt to hit http://localhost:8080/dwr is an error: "There
is no Action mapped for namespace / and action name dwr." I can work around
that error by using http://localhost:8080/dwr/index.html however, when clicking
on a link on the DWR page (to see information about one of my exposed classes)
I get a similar error: "There is no Action mapped for namespace /dwr/test and
action name MessageBean."
I believe this is caused because the Convention plugin treats URLs it can't
resolve as errors instead of falling back on the web container to handle them.
This doesn't seem to be an issue for URLs which actually map back to files, for
example, http://localhost:8080/styles/menu.css works just fine and returns the
menu.css file in my <web app root>/styles directory. Like I said earlier, this
may have been by design.
I've worked around this two ways:
1. Resetting struts.action.extension to be simply "action", since none of the
DWR URLs using .action, this is working but now I have that darn .action in my
URLs again
2. Adding a package-info.java to my base Action package and setting a namespace
(@org.apache.struts2.convention.annotation.Namespace(value="/action")) and then
changing the filter mapping in web.xml to only look for /action/* (and moving
the results files as well)
Neither of those solutions is, in my opinion, very attractive and it seems that
if traditional struts2 can support the DWR URLs that the Convention plugin
should be able to support them too.
Is this an actual bug and can it be fixed or is there another workaround?
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
