topic Deploying Web Service Task - class not found exception in Alfresco Archive

Deploying Web Service Task - class not found exception

ct1 — Tue, 10 Jan 2012 20:09:33 GMT

In Activiti 5.8, I am trying to impement a Web Service task that uses information from a Weather Web Service. When I attempt to deploy the BPMN20 file in Activiti Explorer, I get an ActivitiClassLoadingException. Should the deploy throw a Class not found exception when the Web Service returns a re

Re: Deploying Web Service Task - class not found exception

atifelkhachine — Mon, 16 Jan 2012 13:12:27 GMT

Hi,

A simple way is to create a .jar from your project (be sure to have your com.cdyne.ws.weatherws.WeatherDescription within the .jar). Then add the generated jar to your tomcat/lib and restart it.

Please let me know if it has solved your problem.

Best Regards,
Atif

Re: Deploying Web Service Task - class not found exception

ct1 — Wed, 08 Feb 2012 19:14:05 GMT

That is what I thought, but the CDYNE organization is not willing to give me a .jar file with their classes.

However, my real surprise was that the exception happened when I was trying to deploy the BPMN20 file, not when I was trying to run the process. Does the demployment actually try to load all the classes used by the process rather than waiting until the process is executed to attemp to load the classes?

Thank you.

Re: Deploying Web Service Task - class not found exception

ct1 — Wed, 08 Feb 2012 19:18:56 GMT

I was looking for a way to mark this post completed, but I clicked the "Bump this post". Please disregard.

Re: Deploying Web Service Task - class not found exception

vvstraet — Thu, 19 Jul 2012 09:38:55 GMT

Hello, have you succeeded in making this work?
I used the same webservice and got the same error upon deployment.

Adding the classes to the lib folder did not seem to help, so I wonder if you got any further?

Re: Deploying Web Service Task - class not found exception

ct1 — Thu, 19 Jul 2012 13:01:39 GMT

vvstraet,

I did not get the Weather Web Service to work, so I wrote my own web service using Eclipse and was able to get the Activiti web-service interface to work.

CT1

Re: Deploying Web Service Task - class not found exception

vvstraet — Fri, 20 Jul 2012 07:15:06 GMT

OK, thanks for the reply. Will try that as well, hopefully with the same result 🙂

Re: Deploying Web Service Task - class not found exception

jhordies — Wed, 24 Apr 2013 14:24:04 GMT

Hello, I'm facing the exact same problem:
I found the implementation of the missing class at
http://ftp.java2s.com/Open-Source/Android-Open-Source-App/Development/ack-soap-example/com/cdyne/ws/weatherws/WeatherDescription.java.htm#WeatherDescription
I compiled it and placed it in the lib folder of activiti-explorer.

But the exception remains the same.

org.activiti.engine.ActivitiClassLoadingException: Class not found: java.util.List<com.cdyne.ws.weatherws.WeatherDescription>
at org.activiti.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:82)
…

Did someone manage to get the example working at the end ?

Re: Deploying Web Service Task - class not found exception

sarkar92 — Tue, 28 May 2013 13:33:56 GMT

I also face the same problem while try to deploy my process.

any solution??????

Re: Deploying Web Service Task - class not found exception

perpetuum_mobil — Wed, 10 Jul 2013 13:29:56 GMT

Hello! I also have this problem. But I think activity can't find java.util.List…
I have simple web service:
<code>
package com.cnv.ws.srv.hello;

@WebService
public class Hello {
    @WebMethod(operationName="sayHello")
    @WebResult(name="helloResult")
    public String sayHello(@WebParam(name="mess")List<String> shello) {
        // …
        // some operations with list
        // …
        return "some string";
    }

    public static void main(String[] args) {
        Endpoint.publish("http://localhost:9080/WS/hello", new Hello());
    }
}
</code>

Web method call takes as a parameter the list of strings. And I have the same error when deploying my bpmn with this WS call
(java.lang.ClassNotFoundException: java.util.List<java.lang.String>):

<code>
04:55:02,188 [http-bio-8080-exec-1] INFO org.activiti.engine.impl.bpmn.deployer.BpmnDeployer - Processing resource aiaProcess.bpmn
10.07.2013 16:55:02 org.apache.cxf.common.jaxb.JAXBUtils logGeneratedClassNames
INFO: Created classes: com.cnv.ws.srv.hello.ObjectFactory, com.cnv.ws.srv.hello.SayHello, com.cnv.ws.srv.hello.SayHelloResponse
04:55:02,398 [http-bio-8080-exec-1] ERROR org.activiti.engine.impl.interceptor.CommandContext - Error while closing command context
org.activiti.engine.ActivitiClassLoadingException: Class not found: java.util.List<java.lang.String>
at org.activiti.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:82)
at org.activiti.engine.impl.webservice.CxfWSDLImporter.importStructure(CxfWSDLImporter.java:163)
at org.activiti.engine.impl.webservice.CxfWSDLImporter.importTypes(CxfWSDLImporter.java:150)
at org.activiti.engine.impl.webservice.CxfWSDLImporter.importFrom(CxfWSDLImporter.java:109)
at org.activiti.engine.impl.webservice.CxfWSDLImporter.importFrom(CxfWSDLImporter.java:70)
at org.activiti.engine.impl.bpmn.parser.BpmnParse.createImports(BpmnParse.java:266)
at org.activiti.engine.impl.bpmn.parser.BpmnParse.execute(BpmnParse.java:179)
at org.activiti.engine.impl.bpmn.deployer.BpmnDeployer.deploy(BpmnDeployer.java:86)
at org.activiti.engine.impl.persistence.deploy.DeploymentManager.deploy(DeploymentManager.java:42)
at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:68)
at org.activiti.engine.impl.cmd.DeployCmd.execute(DeployCmd.java:33)
at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:61)
at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
at org.activiti.engine.impl.RepositoryServiceImpl.deploy(RepositoryServiceImpl.java:70)
at org.activiti.engine.impl.repository.DeploymentBuilderImpl.deploy(DeploymentBuilderImpl.java:134)
at org.activiti.explorer.ui.management.deployment.DeploymentUploadReceiver.deployUploadedFile(DeploymentUploadReceiver.java:96)
at org.activiti.explorer.ui.management.deployment.DeploymentUploadReceiver.uploadFinished(DeploymentUploadReceiver.java:71)
at org.activiti.explorer.ui.custom.UploadComponent.uploadFinished(UploadComponent.java:173)
at sun.reflect.GeneratedMethodAccessor359.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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.Upload.fireUploadInterrupted(Upload.java:731)
at com.vaadin.ui.Upload$1.streamingFailed(Upload.java:1037)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.streamToReceiver(AbstractCommunicationManager.java:619)
at com.vaadin.terminal.gwt.server.AbstractCommunicationManager.doHandleSimpleMultipartFileUpload(AbstractCommunicationManager.java:476)
at com.vaadin.terminal.gwt.server.CommunicationManager.handleFileUpload(CommunicationManager.java:259)
at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:495)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.activiti.explorer.filter.ExplorerFilter.doFilter(ExplorerFilter.java:44)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: java.util.List<java.lang.String>
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.activiti.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:63)
… 53 more
</code>

Has anyone solved the problem?

Re: Deploying Web Service Task - class not found exception

jbarrez — Fri, 12 Jul 2013 06:56:01 GMT

It does seem that CXF has issues with interpreting the List web param.

What does happen if you don't use a list? Does it work then?

Re: Deploying Web Service Task - class not found exception

krull80 — Thu, 24 Oct 2013 12:52:16 GMT

Hello,

As Joram said, there is a problem with XSd types that are using a list. for example:
<code>
<complextype>
<sequence>
<element name="sample" maxOccurrs="unbounded"/>
</sequence>
</complextype>
</code>

If you have a type defined like above and you are using it as a message input type in your wsdl the parser will fail, in fact, I have debugged it and it will give you an error in the method <code>CxfWSDLImporter.importStructure</code> while invoking <code>ReflectUtil.loadClass</code> as the java.util.list<your type list> doesn't exist.

The problem was solved after changing the list for a single element ( but you loose the possibility of using lists). I'm checking a workaround for this problem, so I will let you know if I find it.

Regards
Luis

Re: Deploying Web Service Task - class not found exception

krull80 — Thu, 24 Oct 2013 13:23:23 GMT

Hello Again,

I have discovered the root cause of the problem and a work around for it ( it worked for a similar problem I had). In your wsdl definition, where you have:

<code>
<s:element name="ArrayOfWeatherDescription" nillable="true"
    type="tns:ArrayOfWeatherDescription" />
</code>

you need to do:

<code>
<s:element name="ArrayOfWeatherDescription" nillable="true"
    type="tns:ArrayOfWeatherDescriptionListType" />
<s:complexType name="ArrayOfWeatherDescriptionListType">
       <s:sequence>
              <s:element name="ArrayOfweatherDescriptionList" type="tns:ArrayOfWeatherDescription"/>
       </s:sequence>
</s:complexType>
</code>

This will add an extra wrapper <i>ArrayOfweatherDescriptionList</i> that will avoid the problem, but unfortunately it will change the contract definition. This is a problem that should be solved , but in the mean time , at list you can continue working on it.

Regards