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Posted to users@wicket.apache.org by Fernando Wermus <fe...@gmail.com> on 2009/08/03 18:58:48 UTC

WicketFilter and nullpointerexception

Hi all,
    I am using wicket and blazeds. The users logs in through wicket and they
use blazeds services as well. I need to verify in MessageBrokerServlet
(blazeds servlet) that the user has logged in. Then I added the
WicketSessionFilter to get the session. But I got a null pointer exception:

java.lang.NullPointerException
    at
org.apache.wicket.protocol.http.servlet.WicketSessionFilter.doFilter(WicketSessionFilter.java:158)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
    at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:250)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
    at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
    at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
    at org.mortbay.jetty.Server.handle(Server.java:295)
    at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
    at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:210)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
    at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226)
    at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
43360 [btpool0-1] ERROR org.mortbay.log  - /messagebroker/amf
java.lang.NullPointerException
    at
org.apache.wicket.protocol.http.servlet.WicketSessionFilter.doFilter(WicketSessionFilter.java:158)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
    at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:250)
    at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1089)
    at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365)
    at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
    at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
    at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
    at org.mortbay.jetty.Server.handle(Server.java:295)
    at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:503)
    at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:841)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:639)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:210)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:379)
    at
org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:226)
    at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)

I dont realize why this is happening. Because

1. I logged in
2. The MessageBrokerServlet as well as WicketSessionFilter point to the same
url

Thanks in advance.


-- 
Fernando Wermus.

www.linkedin.com/in/fernandowermus