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Re: WebObjects Newbie
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Re: WebObjects Newbie

  • Subject: Re: WebObjects Newbie
  • From: Chuck Hill <email@hidden>
  • Date: Mon, 16 Jul 2007 12:57:19 -0700
Have you tried to run the apps that come with the turtorial? This looks like you are either not following the instructions exactly (or the instructions are wrong, but they have been tested pretty well).

If this happens with the apps that come with the tutorial, then have a look in /Library/Java/Extensions. You have have some jars in there that should not be in there. It looks like it is getting confused looking for Main.java.

Chuck


On Jul 14, 2007, at 6:27 PM, Anthony John Sherbondy wrote:

Chuck,

Thanks for your input. I took your advice and reinstalled Eclipse 3.2.2 and stable WOLips. Reconstructed the WOApp following guidelines in Janine's Tutorial throwing same exception error while trying to run the WOApp:

[2007-07-14 21:21:03 EDT] <WorkerThread0> <com.webobjects.appserver._private.WOComponentRequestHandler>: Exception occurred while handling request:
java.lang.NullPointerException
[2007-07-14 21:21:03 EDT] <WorkerThread0> java.lang.NullPointerException
at com.webobjects.appserver._private.WOComponentDefinition.<init> (WOComponentDefinition.java:84)
at com.webobjects.appserver.WOApplication._componentDefinitionFromClassNa med(WOApplication.java:2353)
at com.webobjects.appserver.WOApplication._componentDefinition (WOApplication.java:2448)
at com.webobjects.appserver.WOApplication.pageWithName (WOApplication.java:1943)
at com.webobjects.appserver._private.WOComponentRequestHandler._dispatchW ithPreparedSession(WOComponentRequestHandler.java:273)
at com.webobjects.appserver._private.WOComponentRequestHandler._dispatchW ithPreparedApplication(WOComponentRequestHandler.java:322)
at com.webobjects.appserver._private.WOComponentRequestHandler._handleReq uest(WOComponentRequestHandler.java:358)
at com.webobjects.appserver._private.WOComponentRequestHandler.handleRequ est(WOComponentRequestHandler.java:432)
at com.webobjects.appserver.WOApplication.dispatchRequest (WOApplication.java:1306)
at com.webobjects.appserver._private.WOWorkerThread.runOnce (WOWorkerThread.java:173)
at com.webobjects.appserver._private.WOWorkerThread.run (WOWorkerThread.java:254)
at java.lang.Thread.run(Thread.java:613)

Any suggestions?


Anthony

On Jul 14, 2007, at 4:11 PM, Chuck Hill wrote:

Anthony,

Eclipse 3.3 and the WOLips nightly build should be considered unstable and bleeding edge. I strongly recommend that you not use it until it has settled down. You are pretty much on your own with 3.3. Instead, use Eclipse 3.2 and the stable WOLips build.

Chuck


On Jul 14, 2007, at 12:25 PM, Anthony John Sherbondy wrote:

Hello all;

I am a newbie to webobjects but subscribed to this fine list and have been following the discussion trails (don't know what to think of the future of webobjects yet given the discussion but I really want to try). You all seem like very smart and knowledgeable folks and well-grounded in webobjects so I did not want to step in a cow pile with my first foot forward. I want to thank Chuck Hill, Mike Schrag and others for the valuable advice being provided on this mailing list. I also want to thank Janine Sisk for the nice beginner's tutorial and sample files. These have helped me a great deal in getting started. However, I have already encountered a problem which I cannot solve. Kindly give a newbie some advice, please.

I successfully downloaded and installed Eclipse 3.3 and installed the standard WOLips for 3.3 as well as other modules for Java, web development, and C,C++ plugins. My goal is to deploy webobjects on Apple MacOSX 10.4.10 using a Tomcat-6.0.13 container behind the standard standard Apache-1.3.33 server with mod_jk and have this system up, running nicely. I have also been able to plugin Tomcat-6 on the development system within Eclipse. I also have downloaded and installed FrontBase-4.2.7 (which I really like, so far better than all others I have looked at - Postgresql, MySQL, OpenBase, Sqlite3, etc.).

I followed Janine's tutorial faithfully and first I noticed that the build.xml is created but does not show up in the Package Explorer as described in the tutorial. Everything else does. Additionally, I get a java.lang.NullPointerException message in the webbrowser while trying to Run the completed nhlpm webobject tutorial example. Therefore, I have failed somewhere but cannot discover it error yet. Any pointers would be appreciated. Console output as follows:

[2007-07-14 15:14:54 EDT] <main> null
[2007-07-14 15:14:54 EDT] <main> Waiting for requests...
[2007-07-14 15:14:55 EDT] <WorkerThread0> <com.webobjects.appserver._private.WOComponentRequestHandler>: Exception occurred while handling request:
java.lang.NullPointerException
[2007-07-14 15:14:55 EDT] <WorkerThread0> java.lang.NullPointerException
at com.webobjects.appserver._private.WOComponentDefinition.<init> (WOComponentDefinition.java:84)
at com.webobjects.appserver.WOApplication._componentDefinitionFromClass Named(WOApplication.java:2353)
at com.webobjects.appserver.WOApplication._componentDefinition (WOApplication.java:2448)
at com.webobjects.appserver.WOApplication.pageWithName (WOApplication.java:1943)
at com.webobjects.appserver._private.WOComponentRequestHandler._dispatc hWithPreparedSession(WOComponentRequestHandler.java:273)
at com.webobjects.appserver._private.WOComponentRequestHandler._dispatc hWithPreparedApplication(WOComponentRequestHandler.java:322)
at com.webobjects.appserver._private.WOComponentRequestHandler._handleR equest(WOComponentRequestHandler.java:358)
at com.webobjects.appserver._private.WOComponentRequestHandler.handleRe quest(WOComponentRequestHandler.java:432)
at com.webobjects.appserver.WOApplication.dispatchRequest (WOApplication.java:1306)
at com.webobjects.appserver._private.WOWorkerThread.runOnce (WOWorkerThread.java:173)
at com.webobjects.appserver._private.WOWorkerThread.run (WOWorkerThread.java:254)
at java.lang.Thread.run(Thread.java:613)

Thanks,
Anthony
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Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/products/practical_webobjects





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References: 


 >WebObjects Newbie (From: Anthony John Sherbondy <email@hidden>)


 >Re: WebObjects Newbie (From: Chuck Hill <email@hidden>)


 >Re: WebObjects Newbie (From: Anthony John Sherbondy <email@hidden>)






    

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