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can't login in activiti explorer

johnrd

Hi,

I am having a problem with login ( kermit/kermit) I have redeployed the activiti war file in case of any corruption, created my database but problem persisting.

Please help

John.

a stack trace is given below

Apr 20, 2013 9:47:04 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Vaadin Application Servlet] in context with path [/activiti-explorer] threw exception [com.vaadin.event.ListenerMethod$MethodException: Invocation of method onLogin in org.activiti.explorer.ui.login.LoginPage$ActivitiLoginListener failed.] with root cause
java.lang.NullPointerException
   at org.activiti.explorer.ui.login.DefaultLoginHandler.authenticate(DefaultLoginHandler.java:40)
   at org.activiti.explorer.ui.login.DefaultLoginHandler.authenticate(DefaultLoginHandler.java:34)
   at org.activiti.explorer.ui.login.LoginPage$ActivitiLoginListener.onLogin(LoginPage.java:98)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
   at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
   at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
   at com.vaadin.ui.LoginForm$2.handleParameters(LoginForm.java:103)
   at com.vaadin.ui.Window.handleParameters(Window.java:515)

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Comments

eva_lin

hi, JohnRd,

place show your .xml file in
\activiti-explorer\WEB-INF

thanks

johnrd

sorry but i didn't understand quite well .. i have not changed anything in the four xml files that are default installation from activiti
i have uploaded all four , extensions changed to txt for sake of uploading

activiti-ui-context.txt.zip

activiti-standalone-context.txt.zip

jbarrez

Do you have any other stacktraces before that one?

From the line where the stacktrace happens, it seems the identityService is null. That can only happen if the engine didn't boot properly.

johnrd

Hi this is all what I got from my tomcat log

Apr 20, 2013 9:33:08 PM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Apr 20, 2013 9:33:08 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext
Apr 20, 2013 9:33:17 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Apr 20, 2013 9:33:17 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Apr 20, 2013 9:33:17 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: attributeAdded('org.apache.jasper.compiler.TldLocationsCache', 'org.apache.jasper.compiler.TldLocationsCache@c4436c')
Apr 20, 2013 9:33:42 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Vaadin Application Servlet] in context with path [/activiti-explorer] threw exception [com.vaadin.event.ListenerMethod$MethodException: Invocation of method onLogin in org.activiti.explorer.ui.login.LoginPage$ActivitiLoginListener failed.] with root cause
java.lang.NullPointerException
at org.activiti.explorer.ui.login.DefaultLoginHandler.authenticate(DefaultLoginHandler.java:40)
at org.activiti.explorer.ui.login.DefaultLoginHandler.authenticate(DefaultLoginHandler.java:34)
at org.activiti.explorer.ui.login.LoginPage$ActivitiLoginListener.onLogin(LoginPage.java:98)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510)
at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:164)
at com.vaadin.ui.AbstractComponent.fireEvent(AbstractComponent.java:1219)
at com.vaadin.ui.LoginForm$2.handleParameters(LoginForm.java:103)
at com.vaadin.ui.Window.handleParameters(Window.java:515)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:528)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.activiti.explorer.filter.ExplorerFilter.doFilter(ExplorerFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)

Apr 20, 2013 9:37:16 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
Apr 20, 2013 9:37:16 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
Apr 20, 2013 9:37:16 PM org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
Apr 20, 2013 9:38:05 PM org.apache.catalina.core.ApplicationContext log
INFO: No Spring WebApplicationInitializer types detected on classpath
Apr 20, 2013 9:38:05 PM org.apache.catalina.core.ApplicationContext log
INFO: Initializing Spring root WebApplicationContext

jbarrez

> created my database

How did you create your database? Did you use the standard DDL? Does the ACT_ID_USER contains data?

bsethuramalinga

same story here, when I configured Activiti to our LDAP store. It appears that the user gets authenticated with LDAP. I had it working once few months ago, I am not exactly sure what went wrong now.

Please advise on the dependency JAR files that are essential to configure ldap with activiti. I have copied the following jar files under WEB-INF/classes folder in support of ldap-configuration.

commons-collections-3.12
jul-to-slfj-1.7.2
ldap-client-api-0.1
log4j-1.2.17
mina-core-2.0.0-M3
shared-ash1-0.9.19
shared-cursor-0.9.19
shared-i18n-0.9.19
shared-ldap-0.9.19
slf4j-api-1.7.2

For testing purposes, I have used activiti 5.11 with Tomcat 7.0.30

Uploaded the xml files for reference.

activiti-standalone-context_0.txt.zip

johnrd

I only provided a mysql database url and the standard ddl is being used. I do have users (3) in my act_user table. I am running tomcat 7 and in the console the message indicating that users have been initialized is not showing . I did deploy same activiti war file on a jetty ver9 and it is working fine. so most probably a problem with tomcat deployment..

trademak

@johnRd So you copied the activiti-explorer.war from the Activiti release distribution right? I really have no problem getting it to work on Tomcat 7.

@bsethuramalingam You introduced the LDAP dependency yourself, so it's difficult to say which dependencies are needed since it's dependent on your code. What's the stacktrace you are seeing?

Best regards,

jonnycarter

For what it's worth, I'm in a similar pickle to @bsethuramalingam.

@bsethuramalingam, I managed to resolve all seeming dependency issues by copying shared-ldap-0.9.17.jar and ldap-client-api-0.1.jar into the ../webapps/activiti-explorer/WEB-INF/lib/ directory in my tomcat instance. I imagine shared-ldap-0.9.19 would work too, but I'm not sure.

However, I am still having another issue. See http://forums.activiti.org/content/nullpointer-exception-ldap-integration-based-apache-directory for the full description (seemed more appropriate to start a new thread).

shivjalli

I downloaded activiti 5.13 today, first time user and had the same problem. I am a newbie to activiti so if the suggestion below is incorrect please let me know alternative solution. The class public class DefaultLoginHandler implements LoginHandler had
definition

rivate transient IdentityService identityService;
previous version of the same module were defined as: private IdentityService identityService;
removed transient, recompiled and it seems to be working ok. Hope this helps.

reinaud

Same Error.

I'm using 5.13 as well along with mysql

reinaud

I looks like this is happening randomly. Last week it worked fine today i started up the same application, but without success!

Please supply a working solution!

glazachev

Workaround - turn off tomcat session serialization.
Add <Manager pathname="" /> in activiti-explorer/META-INF/context.xml file.

It should looks like this:
<Context antiJARLocking="true" path="/activiti-explorer2">
<Manager pathname="" />
</Context>

houstoniasian

It definitely happens randomly. I have Activiti 5.13 working with Tomcat 7.0.33 all day long and all of a sudden I have the same error. I shut down, restart a few times and it still does not work. I went to the log folder, delete all the logs, restart tomcat, look at the logs to see if there is any error, no error. And then all of a sudden I'm able to log in as kermit/kermit again. This worries me as I'm in the beginning of the project. And if Activiti acts randomly like this, we may not want to rely on Activiti.

frederikherema1

Please keep in mind that activiti-explorer is a demo-app, demonstrating the API of activiti in a UI. The engine itself is QA'ed intensively (check out our unit-tests) and is reliable. The Explorer-app is NOT qa'ed as extensively, rather it shows people how to leverage the API's…

houstoniasian

Today I have the same problem again. I decided to run activiti-explorer in different port. It worked. I went back and run it on port 8080. It worked too. So for whatever reason, changing port would fix this problem. This does not answer why it happened in the first place. But at least we have a way to get around this issue. Hopefully somebody would know why changing port would fix this and can fix the root cause.