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ClassNotfound:

rrabbit

Hi,

I'm getting a ClassNotFoundException when executing a service task:

Caused by: java.lang.ClassNotFoundException: org.activiti.engine.delegate.JavaDe
legation
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        … 50 more

My XML looks like this:

      <serviceTask id="servicetask1" name="Service Task"
         activiti:class="CreateOrderService"></serviceTask>
‍‍‍

Any hints?

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Comments

frederikherema1

In RC1, the classname was JavaDelegation. Since 5.0 GA, you should use

org.activiti.engine.delegate.JavaDelegate

rrabbit

that's it - thanks!

rrabbit

sorry having to ask again, but I still can't get the java task to run:

21:40:05,424 ERROR [extensions.webscripts.AbstractRuntime] Exception from execu
teScript - redirecting to status template error: 11050003 Wrapped Exception (wit
h status template): org/activiti/engine/delegate/JavaDelegate
org.springframework.extensions.webscripts.WebScriptException: 11050003 Wrapped E
xception (with status template): org/activiti/engine/delegate/JavaDelegate
        at org.springframework.extensions.webscripts.AbstractWebScript.createSta
tusException(AbstractWebScript.java:742)
        at org.springframework.extensions.webscripts.DeclarativeWebScript.execut
e(DeclarativeWebScript.java:167)
        at org.springframework.extensions.webscripts.PresentationContainer.execu
teScript(PresentationContainer.java:69)
        at org.springframework.extensions.webscripts.AbstractRuntime.executeScri
pt(AbstractRuntime.java:333)
        at org.springframework.extensions.webscripts.AbstractRuntime.executeScri
pt(AbstractRuntime.java:189)
        at org.springframework.extensions.webscripts.servlet.WebScriptServlet.se
rvice(WebScriptServlet.java:118)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:298)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:857)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:588)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:48
9)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NoClassDefFoundError: org/activiti/engine/delegate/JavaDele
gate
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
4)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1632)
        at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoa
der.java:1491)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:247)
        at org.activiti.engine.impl.util.ReflectUtil.loadClassSilent(ReflectUtil
.java:241)
        at org.activiti.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:
54)
        at org.activiti.engine.impl.util.ReflectUtil.instantiate(ReflectUtil.jav
a:111)
        at org.activiti.engine.impl.bpmn.ClassDelegate.instantiateDelegate(Class
Delegate.java:117)
        at org.activiti.engine.impl.bpmn.ClassDelegate.getActivityBehaviorInstan
ce(ClassDelegate.java:100)
        at org.activiti.engine.impl.bpmn.ClassDelegate.execute(ClassDelegate.jav
a:94)
        at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.e
xecute(AtomicOperationActivityExecute.java:40)
        at org.activiti.engine.impl.pvm.runtime.ExecutionImpl.performOperation(E
xecutionImpl.java:521)
        at org.activiti.engine.impl.pvm.runtime.ExecutionImpl.start(ExecutionImp
l.java:362)
        at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartPro
cessInstanceCmd.java:66)
        at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartPro
cessInstanceCmd.java:29)
        at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(Comm
andExecutorImpl.java:22)
        at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execut
e(CommandContextInterceptor.java:37)
        at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterc
eptor.java:33)
        at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceById(
RuntimeServiceImpl.java:64)
        at org.activiti.rest.api.process.ProcessInstancePost.executeWebScript(Pr
ocessInstancePost.java:45)
        at org.activiti.rest.util.ActivitiWebScript.executeImpl(ActivitiWebScrip
t.java:76)
        at org.springframework.extensions.webscripts.DeclarativeWebScript.execut
e(DeclarativeWebScript.java:64)
        … 17 more
Caused by: java.lang.ClassNotFoundException: org.activiti.engine.delegate.JavaDe
legate
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        … 50 more

do I need to put the activiti jars into the tomcat/lib folder? I tried that, but then it says my class doesn't implement JavaDelegate?
For groovy script tasks, I also had to put antlr-2.7.7.jar in the lib folder besides the groovy.jar.
I start my processes via activiti explorer.

jbarrez

Have you checked this section in the userguide: http://activiti.org/userguide/index.html#N10581 ?

In the latest release, putting it into tomcat/lib is not working anymore.

snjohn0

I am using Activiti 5.8. Can somebody tell me where is the Activiti engine's classpath where I can place the jar containing my custom Java service tasks

lisama

You should put them into:
<tomcat>/webapps/activiti-explorer/WEB-INF/lib/

snjohn0

Hi,

Thanks, it works.