I am running a very simple osgi bundle whose activator looks like this
public void start(BundleContext bundleContext) throws Exception {
JAXBContext con = JAXBContext.newInstance(Activator.class);
}
This always throws exception
org.osgi.framework.BundleException: Exception in com.test.bundle.Activator.start() of bundle com.test.bundle.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1177)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/JAXBContext
at com.test.bundle.Activator.start(Activator.java:26)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 12 more
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.JAXBContext
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 16 more
I am running java version "1.6.0_37". These are the bundles i am running
id State Bundle
0 ACTIVE org.eclipse.osgi_3.8.0.v20120529-1548
1 ACTIVE org.eclipse.core.runtime_3.8.0.v20120521-2346
2 ACTIVE org.ops4j.pax.logging.pax-logging-api_1.7.0
3 RESOLVED com.test.bundle_1.0.0.201301181429
4 ACTIVE org.eclipse.equinox.common_3.6.100.v20120522-1841
5 ACTIVE org.eclipse.equinox.console_1.0.0.v20120522-1841
6 ACTIVE org.apache.felix.gogo.runtime_0.8.0.v201108120515
7 ACTIVE org.apache.felix.gogo.shell_0.8.0.v201110170705
8 ACTIVE org.apache.felix.gogo.command_0.8.0.v201108120515
9 ACTIVE org.eclipse.core.jobs_3.5.300.v20120622-204750
10 ACTIVE org.eclipse.equinox.registry_3.5.200.v20120522-1841
11 ACTIVE org.eclipse.equinox.preferences_3.5.0.v20120522-1841
12 ACTIVE org.eclipse.core.contenttype_3.4.200.v20120523-2004
13 ACTIVE org.eclipse.equinox.app_1.3.100.v20120522-1841
isn't javax.xml shipped with java 1.6 ? I also tried adding javax.xml bundles but that didn't solve the issue.
bdoughan
You will need to be sure that you import the javax.xml.bind package or the JAXB public API bundle in the META-INF/MANIFEST.MF file.
OSGi Example (MOXy used as JAXB (JSR-222) provider)
I had a similar problem and managed to solve it using AccessController.doPrivileged like this:
public void start(BundleContext bundleContext) throws Exception {
JAXBContext con = AccessController.doPrivileged(new PrivilegedExceptionAction<JAXBContext>() {
public JAXBContext run() throws JAXBException {
// needs to run here otherwise throws AccessControlException
return JAXBContext.newInstance(Activator.class);
}
});
}
Hope it helps
来源：https://stackoverflow.com/questions/14402287/equinox-java-lang-noclassdeffounderror