java.lang.reflect.InvocationTargetException

[Migrated From Jforum.net]

Hi,

I am using jForum 2.1.4 with MySQL 4.0.15 and keep getting java.lang.reflect.InvocationTargetException after almost every action, when accessing the forum index page. If I restart the server error clears, but after posting or moderating I soon get the message again.

Any ideas? Please find the stacktrace below.

Thanks,

Olli

23:11:29,589 ERROR [ExceptionWriter     ] java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at net.jforum.Command.process(Command.java:106)
        at net.jforum.JForum.service(JForum.java:298)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:604)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:562)
        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:679)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
        at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NullPointerException
        at net.jforum.repository.ForumRepository.getAllCategories(ForumRepository.java:219)
        at net.jforum.view.forum.common.ForumCommon.getAllCategoriesAndForums(ForumCommon.java:135)
        at net.jforum.view.forum.common.ForumCommon.getAllCategoriesAndForums(ForumCommon.java:162)
        at net.jforum.view.forum.ForumAction.list(ForumAction.java:84)
        ... 38 more

15-Jun-2005 23:11:49 org.apache.jk.common.ChannelSocket processConnection
INFO: server has been restarted or reset this connection
23:21:07,812 ERROR [ExceptionWriter     ] java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at net.jforum.Command.process(Command.java:106)
        at net.jforum.JForum.service(JForum.java:298)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
        at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:261)
        at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:360)
        at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:604)
        at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:562)
        at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:679)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
        at java.lang.Thread.run(Thread.java:536)
Caused by: java.lang.NullPointerException
        at net.jforum.repository.ForumRepository.getAllCategories(ForumRepository.java:219)
        at net.jforum.view.forum.common.ForumCommon.getAllCategoriesAndForums(ForumCommon.java:135)
        at net.jforum.view.forum.common.ForumCommon.getAllCategoriesAndForums(ForumCommon.java:162)
        at net.jforum.view.forum.ForumAction.list(ForumAction.java:84)
        ... 38 more

[originally posted on jforum.net by olli]

[Migrated From Jforum.net]

Hard to say. It's not common to exceptions occur in this part of the code. Did you do something "different" by hand, like changing jforum's tables while the container is running, or any other behavior that was not made via the Admin Panel?

Did you tried to reinstall JForum?

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

[Migrated From Jforum.net]

It all started after creating new forum categories, but I managed to fix these errors by saving all user groups again after adding each category as described in one of the posting on this forum.

I have just restarted Tomcat again and posted / erased couple of new topics - seems to be working. So, maybe this is ok as long as I don't create any new categories. Is there a patch somewhere for the category problem.

If I try to reinstall the software can I somehow keep the database?


[originally posted on jforum.net by Anonymous]

[Migrated From Jforum.net]

Ah, that permission bug bug again

I"ve fixed this bug some days ago. When you add a new category or forum, please re-save all permissions again. It will prevent the bug from ocurring.

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