Servlet Exception: DistributedSessionManager

[pazu]

Hello, folks.

I'm trying to develop a small application user JBoss (3.0.0alpha checked out from CVS on 01.08) + Struts. I was doing some EJB's, writing a JSP or two.

It seemed to be OK until now. The problem is: I don't even know what I've done to trigger the error. I've tried to disable struts servlet configuration, to no avail. It seems that there's nothing to do with Struts at all.

The error occurs everytime I try to access a servlet or jsp page. The stack trace:

2002-01-09 11:23:54,754 WARN [org.jboss.jetty.Jetty] WARNING: Servlet Exception for /auth-manager/test?suite=com.tld.auth.tests.AuthManagerTest
java.lang.NullPointerException
 at org.jboss.jetty.DistributedSessionManager$DistributedSession.activate(DistributedSessionManager.java:308)
 at org.jboss.jetty.DistributedSessionManager$DistributedSession.activate(DistributedSessionManager.java:299)
 at org.jboss.jetty.DistributedSessionManager$DistributedSession.<init>(DistributedSessionManager.java:293)
 at org.jboss.jetty.DistributedSessionManager.getHttpSession(DistributedSessionManager.java:195)
 at org.mortbay.jetty.servlet.ServletHandler.getHttpSession(ServletHandler.java:466)
 at org.mortbay.jetty.servlet.ServletHttpRequest.getSession(ServletHttpRequest.java:492)
 at org.mortbay.jetty.servlet.ServletHandler.newFacades(ServletHandler.java:444)
 at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:515)
 at org.mortbay.http.HttpContext.handle(HttpContext.java:1265)
 at org.mortbay.http.HttpContext.handle(HttpContext.java:1219)
 at org.mortbay.http.HttpServer.service(HttpServer.java:725)
 at org.mortbay.http.HttpConnection.service(HttpConnection.java:745)
...

The stack trace goes a bit further, but I think that can be enough. If needed, I can provide all my deployment descriptors, source code and any other information needed to solve this problem.

[pazu]

Just to add a little more info, I've found the following entry digging the server log. I hope this helps finding the error.

[org.jboss.jetty.EJBDistributedStore] WARNING: Support for EJB-based Distributed HttpSessions does not appear to be loaded

[pazu]

Well, here I am again. I've uncovered a new stack trace with a new exception. Here it goes.

java.lang.NoSuchMethodError: org.mortbay.jetty.servlet.HashSessionManager: method access$001(Lorg/jboss/jetty/DistributedSessionManager;)I not found
 at org.jboss.jetty.DistributedSessionManager$DistributedSession.<init>(DistributedSessionManager.java:281)
 at org.jboss.jetty.DistributedSessionManager.newHttpSession(DistributedSessionManager.java:204)
 at org.mortbay.jetty.servlet.ServletHandler.newHttpSession(ServletHandler.java:472)
 at org.mortbay.jetty.servlet.ServletHttpRequest.getSession(ServletHttpRequest.java:499)
 at org.mortbay.jetty.servlet.ServletHttpRequest.getSession(ServletHttpRequest.java:521)

(...)

it goes on.

[pazu]

Well, couldn't find the bug but at least solved my problem. The app works fine if I remove the tag from web.xml