Answers to: Axon ivy Docker Java referenced class not found exception

Comment by Reguel Wermelinger on Reguel Wermelinger's answer

Reguel Wermelinger — Thu, 28 Nov 2019 03:09:56 -0500

@tuanvv why do you pretend that the issue is fixed by migrating to 7.4 and afterwards create a new answer to the same problem? Now we have 3 questions for one library maven issues. And you mix docker and version migration problem into it : but it starts as and stays a simple maven library missunderstanding.

Comment by Reguel Wermelinger on Reguel Wermelinger's answer

Reguel Wermelinger — Thu, 28 Nov 2019 02:45:53 -0500

dependent pom files must be include on the IAR file and added to it's classpath. It's good practice to resolve them from MAVEN (pom.xml dep declaration), copy them with maven-dependency-plugin into the project (but do not put them to SCM), add them to classpath manually. see the link posted: https://answers.axonivy.com/questions/2089/add-library-with-pom-xml

Comment by tuannv on Reguel Wermelinger's answer

tuannv — Wed, 27 Nov 2019 22:10:29 -0500

Hi Ivy team, today, I decided upgrade axon ivy to 7.4 and every thing is ok on this version

thank you guys for support

Comment by tuannv on Reguel Wermelinger's answer

tuannv — Wed, 27 Nov 2019 20:44:19 -0500

Hi Reguel Werme. thank you a lot for your answer. about how do I added persistent before --> I added dependency on Pom file and then use maven clean install to get dependency

Comment by Alex Suter on tuannv's question

Alex Suter — Wed, 27 Nov 2019 12:06:43 -0500

I just want to outline, that this issue has absolutly nothing todo with docker. It just shows that your iar will not run on a brand new engine. Please fix your dependency mgmt. as prposed by Reguel.

Comment by Reguel Wermelinger on Reguel Wermelinger's answer

Reguel Wermelinger — Wed, 27 Nov 2019 05:23:52 -0500

Well the docker deployment must be self contained. I don't know how you added it - but the logs show that the engine class loader can't find your artifacts that you have "added before".

However, I do not see any advantage in somehow copying necessary artifacts in an non standard way. Just include in in the IAR as you should always do it. This is best practice , not only for docker engines. It leads to deterministic deployment scenarios.

Comment by tuannv on Reguel Wermelinger's answer

tuannv — Wed, 27 Nov 2019 05:07:18 -0500

I added before deployed, the problem only happen after I run web app through docker container

Answer by Reguel Wermelinger

Reguel Wermelinger — Wed, 27 Nov 2019 04:23:54 -0500

You're IAR defines additional deps:

<dependencies> 
<dependency> 
<groupid>com.axonivy</groupid> 
<artifactid>persistence</artifactid> 
<version>0.0.1</version> 
</dependency>
</dependencies>

You must add JAR dependencies from maven with your IAR: otherwise they will not be accessible to the engine

https://answers.axonivy.com/questions/2089/add-library-with-pom-xml

Comment by tuannv on tuannv's question

tuannv — Wed, 27 Nov 2019 04:05:02 -0500

Hi Alex Suter , I've added my IAR file to you, but the tool don't support upload file iar, so I change the file from iar to "png" file. please get it and change the file extension to iar file again to get the source code. thank you a lot for support

Comment by tuannv on tuannv's question

tuannv — Wed, 27 Nov 2019 03:57:00 -0500

Hi Reguel Werme,

I don't mentioned GenericEntity class, I think the error relative to GenericEntity class because the genericEntity can't find a "AddNew" java class

so the cause is axon ivy engine can't find java class in docker container. that's my question

Comment by Reguel Wermelinger on tuannv's question

Reguel Wermelinger — Wed, 27 Nov 2019 03:28:45 -0500

Is the mentioned class com/axonivy/persistence/beans/GenericEntity part ot the IAR you are deploying? or is it in a dependency project? Can you see the binary file packed in the IAR?

Comment by Alex Suter on tuannv's question

Alex Suter — Wed, 27 Nov 2019 03:26:05 -0500

please send your iar to the support.

Comment by tuannv on tuannv's question

tuannv — Wed, 27 Nov 2019 03:00:43 -0500

yes, I've tested with only copy IAR project , but it same result of errors

Comment by Alex Suter on tuannv's question

Alex Suter — Wed, 27 Nov 2019 02:58:37 -0500

don't copy everything of your target/* directory in deploy folder. only copy the iar project.