I have a strange error in a Vaadin application running in Karaf 4.3.1. I
have two features, that use Vaadin. Feature ONE works fine. When feature
TWO is deployed I get the following error when accessing the Vaadin UI:
java.lang.NoClassDefFoundError: org/atmosphere/cpr/AtmosphereHandler
at
com.vaadin.server.VaadinServletService.createRequestHandlers(VaadinServletService.java:68)
at com.vaadin.server.VaadinService.init(VaadinService.java:219)
at
com.vaadin.server.VaadinServlet.createServletService(VaadinServlet.java:380)
at com.vaadin.server.VaadinServlet.init(VaadinServlet.java:210)
at de.hierlmeier.karaf.vaadinsample.UIServlet.init(UIServlet.java:44)
at
org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:624)
at
org.eclipse.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:478)
at org.eclipse.jetty.servlet.ServletHolder.prepare(ServletHolder.java:751)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:545)
at
org.ops4j.pax.web.service.jetty.internal.HttpServiceServletHandler.doHandle(HttpServiceServletHandler.java:71)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
...
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException:
org.atmosphere.cpr.AtmosphereHandler not found by com.vaadin.server [159]
at
org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1565)
at
org.apache.felix.framework.BundleWiringImpl.access$300(BundleWiringImpl.java:78)
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1950)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 39 more
I debugged the code down to the class BundleWiringImpl and found out that
when feature TWO is deployed, then the package org.atmosphere.cpr is no
longer in the m_importedPkgs Variable of BundleWiringImpl instance of
bundle 159.
However the Karaf console tells me that the import is available:
de@root()> imports -b 159 | grep org.atmosphere.cpr
org.atmosphere.cpr | [2.4.30.vaadin3,) |
resolved | 159 | com.vaadin.server
The bundle that exports org.atmosphere.cpr is also available:
de@root()> exports | grep org.atmosphere.cpr
org.atmosphere.cpr
| 2.4.30.vaadin3 | 155 |
com.vaadin.external.atmosphere.runtime
Regards
Richard
