I believe I have identified a rather serious bug in WicketFilter.
I'm using a recent 1.3 snapshot, and I have recently updated our application
to leverage the WicketFilter instead of WicketServlet. This is working great
in Tomcat, but when we deploy to our Weblogic server, Wicket dies an ugly
death.
After a lot of debugging in both Weblogic and Tomcat, I was able to track
down the source of the problem.
The problematic method is WicketFilter.getRelativePath.
The method uses request.getServletPath to return the relative path. This
works in Tomcat, because Tomcat is nice enough to return the the relative
request URL when you call request.getServletPath, even if it is not
technically mapped as a servlet in web.xml.
But Weblogic is more strict, and so because the URL is not technically a
real servlet, it just returns "".
This causes the Wicket code to think the URL is for the root path, and so it
tries to append the relative path to the registered home page. Since the
method always returns "", Wicket does this forever, continuing to append the
home page path, redirect, then get confused, again and again.
Wanted to post a message to warn others and to find out if anyone was
already aware of this.
I was able to code up a workaround, since the method was public, copying
most of the original logic into my overridden method. But it got a bit hacky
since I didn't have access to private members of WicketFilter.
Essentially, I replaced the malfunctioning first line:
String path = request.getServletPath();
With something that seems to work better:
String contextPath =
StringUtils.nullToEmpty(request.getContextPath());
String path = request.getRequestURI();
if (path.startsWith(contextPath)) {
path = path.substring(contextPath.length());
}
-Jason
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