Sharing zk libs on Payara Server lead to "Unknown message code"

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asked 2023-05-25 22:41:44 +0800

updated 2023-05-25 22:46:40 +0800

Hi everybody!

I want to share the ZK libraries (jars) among different web applications (wars) running on the Payara/Glassfish Application Server. I copied all the ZK jars in the "domains/myDomain/lib" folder and deployed my applications that uses ZK. At first all works fine but when i re-deploy any of the applications, the ZK framework fails somehow to retrieve the correct messages: i.e. when showing a messagebox the "OK" button is shown with the label "Unknown message code: 27112200".

The strangest thing is that if I restart the server the problem disappear (I have a proper "OK" button), but when deploying a new application or re-deploying an existing one, the messages return to be broken.

I don't know if the problem exists only in Payara Server or also in other Application Servers. There's a post on StackOverflow and it seems that the problem exists also in Tomcat Server (Sorry, I am not able to post the link because "my karma is insufficient to publish links").

Do you have any suggestions? I have to share the ZK framework jars because I want to share a common library for all the application with base Macro Components that all the applications have to use.

Thanks in advance for your help.

Answer 1

0

answered 2023-05-29 17:05:02 +0800

hawk
3250 ● 1 ● 5
http://hawkphoenix.blogsp... ZK Team

For WAR case, you can put your macro component jar in a shared lib folder, separately from your WAR. For example.

[Tomcat HOME]
/lib / macro.jar
/webapp / yourapp.war

see https://github.com/zkoss/zkbooks/tree/master/mymodule

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Thank You hawk for the great example! This is exactly what I'm doing, except for the fact that my components are Java components and they are developed using a MVVM approach. So in the "macro.jar" I have to include also java classes (the java class of each component and the view models) .

GiovanniDeMarco ( 2023-05-29 17:47:54 +0800 )edit

So I have to "share" the ZK jars (otherwise I have a "ClassNotFound" exception for the ZK classes when I use my components).I tried to include them in the "macro.jar" and to directly put all the zk jars in the "lib" folder but the result is the same: after a deploy the "unknown message code" appears

GiovanniDeMarco ( 2023-05-29 17:49:43 +0800 )edit

Answer 2

answered 2023-05-30 13:58:15 +0800

GiovanniDeMarco
161 ● 4

updated 2023-05-30 16:46:25 +0800

hawk
3250 ● 1 ● 5
http://hawkphoenix.blogsp... ZK Team

These are the steps to reproduce the problem (using NetBeans):

Download Payara Server
Copy the ZK jars in the shared lib folder of Payara (payara_installation_dir/glassfish/domains/domain1/lib)
Add a reference to Payara in NetBeans (in Services Tabs - Servers - Add Server)
Create a sample ZK project as a Maven Web Application setting all the ZK dependencies as "<scope>provided</scope>"
In the "Properties" of the application
"Run" tab set the application to run on the Payara server
Create a simple zul page with a button that shows a message box
Run the application: this will start Payara and deploy the application
All is OK

image description

Run the application again: this will undeploy the application and redeploy it again
- The message problem appears

image description

Answer 3

answered 2023-05-30 17:25:45 +0800

hawk
3250 ● 1 ● 5
http://hawkphoenix.blogsp... ZK Team

updated 2023-05-30 17:26:06 +0800

If your Unknown message code: 27112200 is caused by the same error:

java.lang.IllegalStateException: The resources may not be accessed if they are not currently started.

It's not a zk-spefic issue, I found there are similar cases:

Since you mention "if I restart the server the problem disappear", I think it might be similar to this issue https://forum.zkoss.org/question/112063/zk9-internationalization-javalangillegalstateexception/ which is caused by classloading.

In my case the server doesn't log any Exception. Yes I think is a classloading problem similar to the one in the last link you posted. Unfortunately I'm not using Spring or Spring Boot so I don't know what to do. I tried to disable caches as stated in the link but nothing changed.
GiovanniDeMarco ( 2023-05-30 18:13:37 +0800 )edit

Answer 4

answered 2023-05-31 11:06:34 +0800

hawk
3250 ● 1 ● 5
http://hawkphoenix.blogsp... ZK Team

updated 2023-05-31 11:06:58 +0800

If it's caused by classloading, I assume Payara server might behave similarly to spring-boot regarding reloading classes. maybe you can find a similar setting as spring-boot to always reload zk classes

see https://docs.payara.fish/community/docs/5.2021.5/documentation/payara-server/classloading.html

Otherwise, you need to restart every deployment.

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Sharing zk libs on Payara Server lead to "Unknown message code"

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