[jboss-dev-forums] [jBPM Development] - Integration of JBPM into a web application

[Cyrine Bjaoui]

Cyrine Bjaoui [https://community.jboss.org/people/cyrine] created the discussion

"Integration of JBPM into a web application"

To view the discussion, visit: https://community.jboss.org/message/773663#773663

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Hello everybody,

I started creating a JBPM5 project, witch includes some functions to call in a main class. It runs perfectly.
I created also a web application, witch contains 2 web pages  (a web page A with a button to go to the web page B). It works too.

Now i wanna use a function from the JBPM project, and call it via the button action (I used a managed bean) of my web page.
I tryed to call my JBPM project as Jar file, it generated an error saying :


" GRAVE: Exception lors de l'envoi de l'évènement contexte initialisé (context initialized) à l'instance de classe d'écoute (listener) com.sun.faces.config.ConfigureListener
java.lang.LinkageError: loader constraint violation: when resolving interface method "javax.servlet.jsp.JspApplicationContext.getExpressionFactory()Ljavax/el/ExpressionFactory;" the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of the current class, com/sun/faces/config/ConfigureListener, and the class loader (instance of org/apache/catalina/loader/StandardClassLoader) for resolved class, javax/servlet/jsp/JspApplicationContext, have different Class objects for the type javax/el/ExpressionFactory used in the signature
    at com.sun.faces.config.ConfigureListener.registerELResolverAndListenerWithJsp(ConfigureListener.java:1595)
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:419)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972)
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
    at org.apache.catalina.core.StandardService.start(StandardService.java:519)
    at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
 org.apache.catalina.core.StandardContext start "


I thought to use web services, I'm not sure if it will help.
The idea is to use functions, from my JBPM project, into a web application.

Any help please !
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