topic Class not found exception in java service task in Alfresco Archive

Class not found exception in java service task

kavi — Mon, 04 Jul 2011 12:59:28 GMT

Hi ,To use java service task i have create my own java class in "\activiti\workspace\activiti-engine-examples\target\classes\org\activiti\examples\bpmn\servicetask" named "mails.class"My bpm.xml files are in "activiti\workspace\activiti-modeler-examples".So how can i refer my class in my bpm.xml fil

Re: Class not found exception in java service task

ronald_van_kuij — Mon, 04 Jul 2011 14:41:05 GMT

Kavi,

Class files normally start with a Capital, so maybe, just maybe use made an error here

Re: Class not found exception in java service task

vaibhavmaniar — Thu, 09 Jan 2014 05:22:25 GMT

Hi guys,
I'm getting the same problem.
I'm deploying the .bar file on activiti explorer and i had used service task in my process and attached a class with it.
But the bar file which is getting generated does not contains the java class so after deploying it when i'm running its throwing "Class Not Found Exception".
So please help me in deploying java classes with it.

Re: Class not found exception in java service task

frederikherema1 — Thu, 09 Jan 2014 11:13:04 GMT

Please do not ask the same question twice. Asking the same question won't get it answered any sooner…

Re: Class not found exception in java service task

bram — Tue, 18 Feb 2014 19:13:47 GMT

Why not answer the question or provide an update then?

Re: Class not found exception in java service task

jbarrez — Tue, 25 Feb 2014 08:44:54 GMT

A bar will *never* contains Java classes. You need to add them to the classpath yourself.

Re: Class not found exception in java service task

cavdar — Wed, 30 Dec 2015 10:56:55 GMT

why is it necessay to deploy the bar file and copy the jars manually? What is when i use an activiti installation which is not accesible except the explorer?
I would expect that the deployment file contains all needed resources and the deployment process does the rest, including deploy bar file and adds jars/classes into class path of the engine.
Can anyone explain me how to copy the jars my process needs to …/tomcat/webapps/activiti-explorer/META-INF/libs, when tomcat is running on a remote mashine and i don't have file-access to it?
thanks a lot in advance
Kemal CAVDAR

Re: Class not found exception in java service task

trademak — Wed, 30 Dec 2015 11:57:11 GMT

Hi Kemal,

We don't want to implement class loading logic in the Activiti Engine to keep the Engine simple and focused on BPMN execution. JBoss and other application servers, and for example Apache Karaf provide class loading mechanisms that we can utilize in Activiti. If you deploy on Tomcat then yes you need to copy the JARs to the WEB-INF/lib folder.

Best regards,

Re: Class not found exception in java service task

cavdar — Wed, 30 Dec 2015 14:00:03 GMT

Hi Tijs,

thank you verry much replaying so rapidly!