Issues with SOAP webclient in RTC extension
We have a participant for RTC 5.0.2 who uses a SOAP webclient to call actions in a remote server using Work Item information. This have been working correctly until we developed other participant with other webclient. From that moment, sometimes one of them fails with the following error:
java.lang.Throwable: ; nested exception is:
java.lang.ClassCastException: org.apache.axis.transport.http.HTTPSender incompatible with org.apache.axis.Handler
If we test the particpants in separated environments then every participant works fine but when both are at the same environment then sometimes one of them fails. I think it can be related to: http://stackoverflow.com/questions/4566580/strange-interaction-with-axis-osgi
For generating the webclient we used Eclipse 3.6 (New > Web Service Client) with Axis 1.4. The libraries axis.jar, jaxrpc.jar, saaj.jar, webserviceutils.jar and wsdl4.jar are included in a lib folder within every bundle.
Any idea? Is there any other way to generate the webclients that would better for using into RTC? Any workshop or documentation related to generate webclient for RTC?
Thank you.
Edit 1:
We develop extensions with Tomcat and Jetty but our integration and production environments are deployed in Websphere. We found the axis.jar which is in the server on the following paths:
/opt/ibm/WebSphere/AppServer/profiles/AppSrv01/temp/Node01/server1/ccm_war/ccm.war/eclipse/configuration/org.eclipse.osgi/bundles/1057/1/.cp/lib/axis.jar
/opt/ibm/WebSphere/AppServer/profiles/AppSrv01/temp/Node01/server1/ccm_war/ccm.war/eclipse/configuration/org.eclipse.osgi/bundles/286/1/.cp/libs/axis.jar
/opt/ibm/WebSphere/AppServer/profiles/AppSrv01/temp/Node01/server1/ccm_war/ccm.war/eclipse/configuration/org.eclipse.osgi/bundles/291/1/.cp/lib/axis.jar
/opt/ibm/WebSphere/AppServer/deploytool/itp/plugins/org.apache.axis_1.4.0.v201005080400/lib/axis-ant.jar
/opt/ibm/WebSphere/AppServer/deploytool/itp/plugins/org.apache.axis_1.4.0.v201005080400/lib/axis.jar
All Axis manifests are the same:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.6.5
Created-By: 1.4.2_08-b03 (Sun Microsystems Inc.)
Name: org/apache/axis
Implementation-Title: Apache Axis
Implementation-Version: 1.4 1855 April 22 2006
Implementation-Vendor: Apache Web Services
Edit 2:
Both plugins are configured with alike classpaths (it only changes the webservice, in this case lib/gramolin.webservice.client.jar)
One answer
The first thing I would check is whether there are different versions of Axis deployed on the server. Such errors are quite commonly caused by class loading, as you have found out. I can't imagine how you can have such an error if you have only one version of Axis.
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