Exception resuming continuation: dwr glassfish - spring

Question

I'm using dwr3 for reverse ajax with spring mvc. Everything works fine when the application is deployed in tomcat(version 6). But I'm getting the following error when running the same application in glassfish (version 3.1). Any help is highly appreciated.
the error i'm getting;
INFO: [ERROR] [Thread-50 05:00:02] (GrizzlyContinuationSleeper.java:wakeUp:167) Exception resuming continuation:
java.lang.NullPointerException
at org.directwebremoting.util.Continuation.resume(Continuation.java:108)
at org.directwebremoting.server.grizzly.GrizzlyContinuationSleeper.wakeUp(GrizzlyContinuationSleeper.java:157)
at org.directwebremoting.impl.OutputAlarm$AlarmScriptConduit$1.run(OutputAlarm.java:103)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
INFO: [ERROR] [Thread-50 05:00:02] (GrizzlyContinuationSleeper.java:wakeUp:167) Exception resuming continuation:
java.lang.NullPointerException
at org.directwebremoting.util.Continuation.resume(Continuation.java:108)
at org.directwebremoting.server.grizzly.GrizzlyContinuationSleeper.wakeUp(GrizzlyContinuationSleeper.java:157)
at org.directwebremoting.impl.OutputAlarm$AlarmScriptConduit$1.run(OutputAlarm.java:103)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

Answer 1

Add this to the POM.This should do the trick
<dependency>
<groupId>com.sun.grizzly</groupId>
<artifactId>grizzly-continuation</artifactId>
<version>1.9.0-RC1</version>
</dependency>
The later jar file contains the Grizzly's classes that detect with Grizzly version is installed and will make DWR works with all GlassFish version (9.1, 9.1 ur1, Sailfin, OpenESB).