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Null Pointer Exception

 
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We are running JForum - but dozens of users are complaining about not being to post - they get this exception (version=2.1.6). Any tips ?

java.lang.NullPointerException net.jforum.JForumExecutionContext.enableRollback(JForumExecutionContext.java:272)
net.jforum.JForum.service(JForum.java:209)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802) net.jforum.util.legacy.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:59)

[originally posted on jforum.net by zeeiyer]
 
Migrated From Jforum.net
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Btw wanted to clarify that we have checked the JIRA (http://jforum.net/jira/browse/JF-532) and other posts that state the exception appears to happen when uploading a file or image.

And executed the workaround of write permission to tmp of root directory (http://www.coderanch.com/t/576860 )

Our users still report this "enableRollback" NPE but they aren't uploading images or files... they are able to post very short messages though...

Thanks.
[originally posted on jforum.net by zeeiyer]
 
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hhhm.. very strange. It may be something else now.. do you have the generated exception log for these situations?

Rafael
[originally posted on jforum.net by Rafael Steil]
 
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Thats all the stack trace in the log...

[originally posted on jforum.net by zeeiyer]
 
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Hi

Just a quick question. I have a class called "PostCommon.java" with the following method :

public static Post preparePostForDisplay(Post p) {

// How to get userId here

}


i want to get the userID inside that method. I have tried following ways but it doesn't work .

1) p.getUserId(); // always returns 0
2) SessionFacade.getUserSession().getUserId() // always throws null pointer exception.

Could you please give me a better solution to do this?

Thanks.
[originally posted on jforum.net by rufi]
 
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SessionFacade.getUserSession() NEVER should return null, even for anonymous users. If this is happening, there is something very very wrong with the executing request.

Rafael
[originally posted on jforum.net by Rafael Steil]
 
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Hi

This is the exception i have got when i tried to call in 'PostCommon.java' inside 'public static Post preparePostForDisplay(Post p)'


[originally posted on jforum.net by rufi]
 
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I am getting a NPE with enableRollback after upgrading from 2.1.6 to 2.1.7 just when I try to view the home page of the forum:

Please help.

2007-02-28 11:47:04 StandardWrapperValve[jforum]: Servlet.service() for servlet jforum threw exception
java.lang.NullPointerException
at net.jforum.JForumExecutionContext.enableRollback(JForumExecutionContext.java:272)
at net.jforum.JForum.service(JForum.java:209)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at net.jforum.util.legacy.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:59)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:300)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:374)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:743)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:675)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:866)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)

[originally posted on jforum.net by dferrero]
 
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Have you made any customizations for JForum, or are you calling any of his actions / methods from other application?

Rafael
[originally posted on jforum.net by Rafael Steil]
 
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Hi

I haven't done any customization on this part. When you simply click the 'preview' button in post and when you try to get the 'User Id' using SessionFacade you get this exception in the postcommon.java.

Could you please give me the solution?

Thanks.
[originally posted on jforum.net by rufi]
 
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Registered the bug: http://www.jforum.net/jira/browse/JF-622

Rafael
[originally posted on jforum.net by Rafael Steil]
 
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