Senthil Sathiya [https://community.jboss.org/people/skumar0105] created the discussion
"Re: Error starting process instance - getting HTTP 500: Unknown error" To view the discussion, visit: https://community.jboss.org/message/831217#831217 -------------------------------------------------------------- Hi Maciej, Thanks for your reply. I went through the documentation and followed the steps . First , created a sampleprocess.bpmn with - start ---> task (CustomHandler) -> and end event . 2) Wrote a CustomHandler.java workItem handler class package com.sample.bpmn.project; import org.apache.log4j.Logger; import org.drools.runtime.process.WorkItemHandler; import org.drools.runtime.process.WorkItem; import org.drools.runtime.process.WorkItemManager; public class CustomHandler implements WorkItemHandler { static Logger log = Logger.getLogger( CustomHandler.class.getName()); //@Override public void abortWorkItem(WorkItem workItem, WorkItemManager manager) { // extract parameters System.out.println("aborting *****"); } //@Override public void executeWorkItem(WorkItem workItem, WorkItemManager manager) { System.out.println("The custom work handler is successfully invoked"); log.info("The custom work handler is successfully invoked"); manager.completeWorkItem(workItem.getId(), null); } } and packaged it into a .jar and copied it into ..\jboss-as-7.1.1.Final\standalone\deployments\jbpm-gwt-console-server.war\WEB-INF\lib\ and ..\jbpm-installer\jboss-as-7.1.1.Final\standalone\lib directories. 3) In guvnor, created a workitem defintion CustomWorkItemHandler ( Not sure if this is required ) import org.drools.process.core.datatype.impl.type.ObjectDataType; import org.drools.process.core.datatype.impl.type.StringDataType; [ [ "name" : "CustomHandler", "parameters" : [ "MyFirstParam" : new StringDataType(), "MySecondParam" : new StringDataType(), "MyThirdParam" : new ObjectDataType() ], "results" : [ "Result" : new ObjectDataType() ], "displayName" : "CustomHandler", "icon" : "", ] ] Successfully packaged and deployed the sampleprocess and wid into the GWT console server via guvnor. 4) Modified the CustomWorkItemHandlers.conf file and added the following entry [ "Log": new org.jbpm.process.instance.impl.demo.SystemOutWorkItemHandler(), "CustomHandler": new com.sample.bpmn.project.CustomHandler(), ] 5) Restarted the server . I was able to see the SampleProcess in the webconsole , but when I tried to start it , blew up again with the same error message . I am really frustrated :( , not sure what I am missing here. . Any help would be highly appreciated . Thanks Senthil -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/831217#831217] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]
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