When using Java 6 with Javassist you will come across these problems eventually, we have been using it for nearly a year and the good news is that it can work reliably. We had to suffer somewhat until we found some workarounds though, so anyone with this setup please take note of the following:
- Get the newest version of Javassist, it is a lot better... you can override any Tapestry default library by simply including the dependency explicitly in your POM. - Avoid using try catch if possible in Tapestry render phase methods, this is one of the main culprits, if you can use "Throws xyzException" instead then use it... also using onException in your page classes can help mitigate this by handling some of these error conditions. - Granted it is not always possible to avoid a try catch in those methods, but often by extracting that portion of your code into a private method you can also avoid the transformation errors. - For publishing a war before deploying: If you use eclipse, prefer it for compilation, rather than maven/ant command line tools... the command line compiler is old and often breaks with Javassist and JDK 1.6... eclipse is smarter though and wont. Hope this info helps someone, we are now running in production using Tapestry 5 and JDK 6, and all is well. Best wishes Peter ----- Original Message ----- From: "zack1403" <[EMAIL PROTECTED]> To: users@tapestry.apache.org Sent: Saturday, 10 May, 2008 6:12:16 AM GMT +02:00 Athens, Beirut, Bucharest, Istanbul Subject: Re: TransformationException/ClassNotFoundException Actually I found an unlikely workaround (for my case at least). All I did was move the entire ContactUpload property to the top of the class. For whatever reason the error went away. I am really not familiar with Javassist but at least there is a workaround to this. Of course I am open to any solution that would prevent this in the future. Zack Filip S. Adamsen-2 wrote: > > For what it's worth I saw the same errors earlier while using the > @Cached annotation. Removing the annotation made the errors go away. > Following the advice in the linked mail, on the other hand, doesn't help. > > But it doesn't happen all the time - I use @Cached lots, and it was only > two specific instances that didn't work. But then again both of those > were inside loops, which is a problem according to the mail. > > So, would the solution be a downgrade of Javassist, if that's even > possible? > > -Filip > > On 2008-05-09 23:28, Josh Canfield wrote: >> This is what I found about it from googling... >> http://article.gmane.org/gmane.comp.java.tapestry.user/59171 >> >> I don't have personal experience with the problem, just remembered it >> being mentioned. >> >> On Fri, May 9, 2008 at 2:11 PM, zack1403 <[EMAIL PROTECTED]> wrote: >>> I am running java 1.6.0_03 on Ubuntu 7. 5.0.11 is my tapestry version. >>> >>> Hmm that would make sense then. Do you know of a workaround? >>> >>> Thanks for the quick reply, >>> Zack >>> >>> >>> joshcanfield wrote: >>>> Are you running with Java6? I believe at one point there was a defect >>>> in a version of javaassist that would cause the >>>> ArrayIndexOutOfBoundsException you are seeing. What version of >>>> Tapestry are you running? >>>> >>>> Josh >>>> >>>> >>>> On Fri, May 9, 2008 at 1:50 PM, zack1403 <[EMAIL PROTECTED]> >>>> wrote: >>>>> Hi All, >>>>> >>>>> Im getting a very wierd error that isnt very descriptive. When just >>>>> loading >>>>> this page: http://pastebin.com/m141bdd4d, I get this error: >>>>> http://pastebin.com/m5f42dd31. >>>>> >>>>> If I refresh the error page I get a new error: >>>>> http://pastebin.com/m1859133b >>>>> >>>>> Removing the ContactUpload property seems to make it work but so does >>>>> commenting out line 33. The error just doesnt seem to make sense to >>>>> me. >>>>> Any ideas? >>>>> >>>>> Thanks, >>>>> Zack >>>>> -- >>>>> View this message in context: >>>>> http://www.nabble.com/TransformationException-ClassNotFoundException-tp17156180p17156180.html >>>>> Sent from the Tapestry - User mailing list archive at Nabble.com. >>>>> >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>>>> For additional commands, e-mail: [EMAIL PROTECTED] >>>>> >>>>> >>>> >>>> >>>> -- >>>> -- >>>> TheDailyTube.com. Sign up and get the best new videos on the internet >>>> delivered fresh to your inbox. >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>>> For additional commands, e-mail: [EMAIL PROTECTED] >>>> >>>> >>>> >>> -- >>> View this message in context: >>> http://www.nabble.com/TransformationException-ClassNotFoundException-tp17156180p17156492.html >>> Sent from the Tapestry - User mailing list archive at Nabble.com. >>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>> For additional commands, e-mail: [EMAIL PROTECTED] >>> >>> >> >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/TransformationException-ClassNotFoundException-tp17156180p17159528.html Sent from the Tapestry - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
