9:40 a.m.
Khaleel Shaik [https://community.jboss.org/people/shaikkhaleel] created the discussion
"Re: jBPM5 running via a Web Interface"
To view the discussion, visit: https://community.jboss.org/message/748050#748050
--------------------------------------------------------------
Hi,
I hope now I am able to find out a way and understand the scenario, if any body can
provide more details it would be great.
1. Build your Process in Eclipse.
2. Register this process with Drools repository (see how to do it in the Chapter 16
http://docs.jboss.org/jbpm/v5.3/userguide/ch.process-repository.html
http://docs.jboss.org/jbpm/v5.3/userguide/ch.process-repository.html ).
(Right click on your Evaluation.bpmn process choose Guvnor and then add
(provide the host and port and authentication credentials.)
3. Now you can browse the to see your deployed process at bpmn-console
http://localhost:8080/jbpm-console/ http://localhost:8080/jbpm-console/
4. Also you can see the same process in the govnor http://localhost:8080/drools-guvnor
http://localhost:8080/drools-guvnor
5. Invoke the process from the Web application Copy all the process in some folder say
html-public/jbpmflows/ <Evalution.bpmn> (you can copy all others flows here)
6. Use the following code with the URL that you can point to the process file as a simple
static file
private static KnowledgeBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
//kbuilder.add(ResourceFactory.newClassPathResource("Evaluation.bpmn"),
ResourceType.BPMN2);
//kbuilder.add(ResourceFactory.newUrlResource("file:///D:/Evaluation.bpmn"),
ResourceType.BPMN2);
kbuilder.add(ResourceFactory.*newUrlResource*(new java.net.URL("
http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/webdav/packa...
http://<yourwebhost>:8080/webcontextroot/jbpm/Evaluation.bpmn")),
ResourceType.BPMN2);
return kbuilder.newKnowledgeBase();
}
7. submit your flow request to the host system where your flows were registered
private static StatefulKnowledgeSession createKnowledgeSession(KnowledgeBase kbase)
{
StatefulKnowledgeSession ksession =
kbase.newStatefulKnowledgeSession();
HornetQHTWorkItemHandler humanTaskHandler = new
HornetQHTWorkItemHandler(ksession);
humanTaskHandler.setIpAddress("127.0.0.1"); //govnor host
humanTaskHandler.setPort(5445); //govnor port
ksession.getWorkItemManager().registerWorkItemHandler("Human
Task", humanTaskHandler);
return ksession;
}
Thanks
-- Khaleel
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2:24 a.m.
Pavan Kumar Mantha [https://community.jboss.org/people/manthapavan] created the
discussion
"Re: jBPM5 running via a Web Interface"
To view the discussion, visit: https://community.jboss.org/message/832844#832844
--------------------------------------------------------------
Hello all
i want to call the jBPM process from servlet so i did it in the following way
my servlet class:
/**
*
*/
package com.spark.jbpm.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author Sony
*
*/
public class JbpmServlet extends HttpServlet {
@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
JBPMDao jbpmDao = new JBPMDao();
try {
jbpmDao.runJbpmProcess();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
my dao class:
/**
*
*/
package com.spark.jbpm.servlet;
import org.drools.KnowledgeBase;
import org.drools.builder.KnowledgeBuilder;
import org.drools.builder.KnowledgeBuilderFactory;
import org.drools.builder.ResourceType;
import org.drools.io.ResourceFactory;
import org.drools.io.impl.UrlResource;
import org.drools.runtime.StatefulKnowledgeSession;
/**
* @author Sony
*
*/
public class JBPMDao {
public void runJbpmProcess() throws Exception{
KnowledgeBase kbase = readKnowledgeBase();
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
ksession.startProcess("defaultPackage.HelloWorld");
}
private KnowledgeBase readKnowledgeBase() throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
String url = "
http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...
http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/defa...;
System.out.println("Going: " + url);
UrlResource resource = (UrlResource) ResourceFactory.newUrlResource(url);
resource.setBasicAuthentication("enabled");
resource.setUsername("krisv");
resource.setPassword("krisv");
kbuilder.add(resource, ResourceType.PKG);
if(kbuilder.hasErrors()){
throw new RuntimeException(kbuilder.getErrors().toString());
}
KnowledgeBase knowledgeBase = kbuilder.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return knowledgeBase;
}
}
my web.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance
http://www.w3.org/2001/XMLSchema-instance"
xmlns=" http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee"
xmlns:web=" http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation=" http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>jBPMServlet</servlet-name>
<servlet-class>com.spark.jbpm.servlet.JbpmServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>jBPMServlet</servlet-name>
<url-pattern>/jBPMServlet</url-pattern>
</servlet-mapping>
</web-app>
now when i deply and run the project i get the below error:
h1. HTTP Status 500 -
----
*type* Exception report
*message*
*description* The server encountered an internal error () that prevented it from
fulfilling this request.
*exception*
javax.servlet.ServletException: Error instantiating servlet class
com.spark.jbpm.servlet.JbpmServlet
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
java.lang.Thread.run(Thread.java:662)
*root cause*
java.lang.ClassNotFoundException: com.spark.jbpm.servlet.JbpmServlet from [Module
"deployment.Servlet-jBPM.war:main" from Service Module Loader]
org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:72)
org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
java.lang.Thread.run(Thread.java:662)
*can any one tell me the exact cause of this issue. i am also trying to resolve but not
able to get the exact reason*
*Thanks*
*Pavan Kumar
*
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