Invoke a WebService from ActionHandler

[dadajboss]

Hi all.
I'm trying to invoke a web service from my jBoss/jBPM process.
As Ronald suggests in this post:
http://www.jboss.com/index.html?module=bb&op=viewtopic&t=70723
I write an actionhandler which invokes the webservice and then I associate it on a node-enter event of a node.
But when I run the process from jBoss-jBpm console I get an exception

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet execution threw an exception
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

root cause

java.lang.NoClassDefFoundError: org/apache/axis/client/Service
 com.Process_3.WebServiceAction.execute(WebServiceAction.java:22)
 org.jbpm.graph.def.Action.execute(Action.java:122)
 org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)
 org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:220)
 org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:190)
 org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:174)
 org.jbpm.graph.def.Node.enter(Node.java:303)
 org.jbpm.graph.def.Node$$FastClassByCGLIB$$d187eeda.invoke(<generated>)
 net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
 org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
 org.jbpm.graph.def.Node$$EnhancerByCGLIB$$ad2fc36c.enter(<generated>)
 org.jbpm.graph.def.Transition.take(Transition.java:151)
 org.jbpm.graph.def.Node.leave(Node.java:394)
 org.jbpm.graph.node.TaskNode.leave(TaskNode.java:209)
 org.jbpm.graph.node.TaskNode$$FastClassByCGLIB$$923668a4.invoke(<generated>)
 net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
 org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
 org.jbpm.graph.node.TaskNode$$EnhancerByCGLIB$$e933732a.leave(<generated>)
 org.jbpm.graph.exe.Token.signal(Token.java:195)
 org.jbpm.graph.exe.Token.signal(Token.java:140)
 org.jbpm.graph.exe.Token$$FastClassByCGLIB$$74df1c6e.invoke(<generated>)
 net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
 org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
 org.jbpm.graph.exe.Token$$EnhancerByCGLIB$$dc8930e8.signal(<generated>)
 org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:485)
 org.jbpm.taskmgmt.exe.TaskInstance.end(TaskInstance.java:399)
 org.jbpm.jsf.core.action.CompleteTaskActionListener.handleAction(CompleteTaskActionListener.java:47)
 org.jbpm.jsf.core.impl.JbpmActionListenerWrapper.processAction(JbpmActionListenerWrapper.java:82)
 javax.faces.event.ActionEvent.processListener(ActionEvent.java:77)
 javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:758)
 javax.faces.component.UICommand.broadcast(UICommand.java:368)
 org.jbpm.jsf.taskform.ui.UITaskFormButtonBase.broadcast(UITaskFormButtonBase.java:56)
 javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:448)
 javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:752)
 com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:97)
 com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
 com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
 javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
 org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

This is the ActionHandler code:

package com.Process_3;

import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.exe.ExecutionContext;
import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import org.apache.axis.encoding.XMLType;


import javax.xml.rpc.ParameterMode;


public class WebServiceAction implements ActionHandler {
 private static final long serialVersionUID = 1L;

 public void execute(ExecutionContext executionContext) throws Exception {
 // Make the call
 String method = new String("Get_CodFisFromLocalita");
 String endpoint = "http://www.nexusonline.it:8088/4DWSDL";
 String city = (String) ("Milano");

 Service service = new Service();
 Call call = (Call) service.createCall();

 call.setTargetEndpointAddress(new java.net.URL(endpoint));
 call.setOperationName( method );
 call.addParameter(city, XMLType.XSD_STRING, ParameterMode.IN);
 call.setReturnType(XMLType.XSD_STRING);

 String ret = (String) call.invoke( new Object[] { city } );

 executionContext.getContextInstance().createVariable("sigla", ret);

 System.out.println("Result: " + ret);
 }

}

Note:
I deploy the process by mean jBPD Eclipse plugin.

Any help will be appreciated.
Thank you!

[anuragpaliwal]

Its seems that axis jar file is not in classpath.

Include it in your classpath.

[dadajboss]

anuragpaliwal, thanks for the answer.
Execuse me for my "ignorance" when you say "Include it in your classpath" what do you mean in practical? There is some settings to do ?
thank you.

[anuragpaliwal]

Add axis.jar file in jbpm-console.war's lib dir

[dadajboss]

Done! But I have still the following error:

Error completing task: An exception of type "org.jbpm.graph.def.DelegationException" was thrown. The message is: ; nested exception is:
 org.xml.sax.SAXParseException: Content is not allowed in prolog.

I've also tried to call another webservice:

String method = new String("GetQuote");
 String endpoint = "http://www.webservicex.com/stockquote.asmx?WSDL";
 String city = (String) ("IBM");

and the error is:

Error completing task: An exception of type "org.jbpm.graph.def.DelegationException" was thrown. The message is: System.Web.Services.Protocols.SoapException: Server did not recognize the value of HTTP Header SOAPAction: .
 at System.Web.Services.Protocols.Soap11ServerProtocolHelper.RouteRequest()
 at System.Web.Services.Protocols.SoapServerProtocol.Initialize()
 at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing)

Do you have some idea?

[kukeltje]

'content not allowed in prolog' means there is data before <?xml.......?>

Not jbpm related at all....