10:20 a.m.
Hi All,
I created a simple workflow with one node which just prints out the message. I deployed
this in jbpm using eclipse and then tested it through the
UI..http://localhost:8080/jbpm-console and all looks good.
here is the WF xml
<?xml version="1.0" encoding="UTF-8"?>
| <process-definition xmlns="urn:jbpm.org:jpdl-3.2"
| name="first-demo-process">
| <start-state name="start-state1">
| <transition to="node1"></transition>
| </start-state>
| <node name="node1">
| <action class="com.sample.action.MessageActionHandler">
| <message>ashish sending message1</message>
| </action>
| <transition to="end-state1"></transition>
| </node>
| <end-state name="end-state1"></end-state>
| </process-definition>
Now I created a servlet and deployed that, which hopefully will invoke the WF described
above..here is the code for that..
package com.ashish.test;
|
| import java.io.IOException;
| import java.io.PrintWriter;
| import javax.servlet.ServletException;
| import javax.servlet.http.HttpServlet;
| import javax.servlet.http.HttpServletRequest;
| import javax.servlet.http.HttpServletResponse;
|
| import java.util.HashMap;
| import org.jbpm.JbpmConfiguration;
| import org.jbpm.JbpmContext;
| import org.jbpm.db.GraphSession;
| import org.jbpm.graph.def.ProcessDefinition;
| import org.jbpm.graph.exe.ProcessInstance;
|
| public class WFTriggerServlet extends HttpServlet {
| /**
| * Processes requests for both HTTP <code>GET</code> and
<code>POST</code> methods.
| * @param request servlet request
| * @param response servlet response
| */
| protected void processRequest(HttpServletRequest request, HttpServletResponse
response)
| throws ServletException, IOException {
| response.setContentType("text/html;charset=UTF-8");
| PrintWriter out = response.getWriter();
| try {
| out.println("inside processRequest function");
| out.println(startProcess(16, "first-demo-process", null, null,
true));
| out.println("Ending call");
| } finally {
| out.close();
| }
| }
|
| public long startProcess(long processId, String processName, String key, HashMap
processVariables, boolean signalStart) {
| long tokenId = 0;
| JbpmConfiguration jbpmConfig = null;
| JbpmContext jbpmContext = null;
| try {
|
| if (jbpmConfig == null) {
| jbpmConfig = JbpmConfiguration.getInstance();
| }
| jbpmContext = jbpmConfig.createJbpmContext();
| } catch (Exception e) {
| return -1; //e.getMessage().toString();
| }
| try {
| // get the session and process definition according to the process id
| GraphSession graphSession = jbpmContext.getGraphSession();
|
| ProcessDefinition processDefinition = null;
| if (processName.length() > 0) {
| processDefinition =
graphSession.findLatestProcessDefinition(processName);
| } else {
| processDefinition = graphSession.getProcessDefinition(processId);
| }
|
| // if there are no process variables, then create an empty variable list
| if (processVariables == null) {
| processVariables = new HashMap();
| }
| // startup the process, set its business key (for correlation purposes,
and
| // signal it to start going with the flow
| ProcessInstance processInstance =
processDefinition.createProcessInstance(processVariables);
|
| processInstance.setKey(key);
| tokenId = processInstance.getRootToken().getId();
| if (signalStart) {
| processInstance.signal();
| }
| } finally {
| jbpmContext.close();
| }
| return tokenId;
| }
| }
|
I copied the .war file for the servlet to
/opt/software/jbpm-jpdl-3.2.3/server/server/jbpm/deploy/
and i see this on the console...
09:57:20,150 INFO [TomcatDeployer] deploy, ctxPath=/WFTrigger,
warUrl=.../tmp/deploy/tmp21005WFTrigger-exp.war/
| 09:57:20,697 INFO [WebappClassLoader]
validateJarFile(/opt/software/jbpm-jpdl-3.2.3/server/server/jbpm/./tmp/deploy/tmp21005WFTrigger-exp.war/WEB-INF/lib/servlet-api.jar)
- jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class:
javax/servlet/Servlet.class
Now when I try to hit http://localhost:8080/jbpm-console/sa/processes.jsf I am not able to
view the JBPM page also and am getting this error on the console...
09:58:29,248 INFO [STDOUT] 09:58:29,248 INFO [JbpmConfiguration] using jbpm
configuration resource 'jbpm.cfg.xml'
| 10:00:06,746 WARN [lifecycle] executePhase(RESTORE_VIEW
1,com.sun.faces.context.FacesContextImpl@62a404) threw exception
| javax.faces.application.ViewExpiredException: viewId:/sa/processes.jsf - View
/sa/processes.jsf could not be restored.
| at
com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:187)
| at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
| at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
| at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
| at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
| at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
| at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
| at java.lang.Thread.run(Thread.java:619)
| 10:00:06,749 WARN [lifecycle] phase(RESTORE_VIEW
1,com.sun.faces.context.FacesContextImpl@62a404) threw exception:
java.lang.NullPointerException null
|
org.jboss.gravel.common.phase.GravelPhaseListener.afterPhase(GravelPhaseListener.java:112)
| com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:280)
| com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
| javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
|
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
|
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
|
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
|
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
| org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
|
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
|
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
| org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
| org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
| org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
|
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
| org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
| org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
| org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
|
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
| org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
| java.lang.Thread.run(Thread.java:619)
|
| 10:00:06,749 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw
exception
| javax.faces.application.ViewExpiredException: viewId:/sa/processes.jsf - View
/sa/processes.jsf could not be restored.
| at
com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:187)
| at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
| at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
| at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
| at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
| at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
| at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
| at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
| at java.lang.Thread.run(Thread.java:619)
|
Can anyone please help me with this ? Its really confusing for me as i am doing it for the
first time....
Thanks
Ashish
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