Using custom Classes in JBPM 4

[mark.newbie]

Hi all !

I'm trying to develop a Web application which uses JBPM 4.2 engine on JBoss 5.0.

In my workflow some <java> nodes are used and <script> as well.

For example, using one class that ships with the examples:

<java name="greet" class="org.jbpm.examples.java.JohnDoe"

method="hello" var="answer" g="96,16,83,52">

  <field name="state"><string value="fine"/></field>

  <arg><string value="Hi, how are you?"/></arg>

  <transition to="shake hand" />

</java>

The problem is that when one of these nodes is reached, a weird error "org.jbpm.JbpmException" was thrown.

The message is: "couldn't deserialize object ... caused by ClassNotFoundException org.jbpm.examples.java.JohnDoe"

I've deployed the web application adding the .jpdl.xml file in the Web application classpath.

I've not added any jbpm library in the WEB-INF/lib since I've installed jbpm on my JBoss server

(in the deploy/jbpm folder)

What is the correct way to package the workflow Java Classes ? should I add the JBPM  core libs to my project also ?

Thanks a lot

Mark

[yushanyuan]

try to add the jboss-5.0.0.GA\server\default\deploy\jbpm\userlibs\examples.jar to your web app lib