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[equinox-dev] A problem while using OSGI together with ActiveMQ!

ActiveMQConnection.DEFAULT_PASSWORD and ActiveMQConnection.DEFAULT_BROKER_URL are both defined in org/apache/activemq/ActiveMQConnection,and I have import this using "import org.apache.activemq.ActiveMQConnection ;" in my program.
If I run the codes below it works normally
public void start(BundleContext context) throws Exception {
  ServiceReference[] refs = context.getServiceReferences(
    ProducerService.class.getName (), "(ProducerPool=*)");
  String url = "">
}
 
But if change the "String url = "" above to "String pwd = ActiveMQConnection.DEFAULT_PASSWORD;"
as below it does't work
public void start(BundleContext context) throws Exception {
  ServiceReference[] refs = context.getServiceReferences(
    ProducerService.class.getName(), "(ProducerPool=*)");
String pwd = ActiveMQConnection.DEFAULT_PASSWORD ;
}
 
And the error is:Bundle 39 is not active but resolved as showed below.

osgi> ss

Framework is launched.

id State       Bundle
0 ACTIVE      system.bundle_3.2.2.R32x_v20070118
1 ACTIVE      org.eclipse.osgi.services_3.1.100.v20060601
3 ACTIVE      org.eclipse.equinox.servlet.api_1.0.0.v20060601
33 ACTIVE      org.eclipse.equinox.http_1.0.2.R32x_v20061218
38 ACTIVE      OSGIProducer_1.0.0
39 RESOLVED    ProducerApp_1.0.0
40 ACTIVE      ProducerImplOne_1.0.0

When I tried to start bundle 39 error occurs.

osgi> start 39
org.osgi.framework.BundleException: Exception in producerapp.Activator.start() of bundle ProducerApp.
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java :1010)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:966)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)
 at org.eclipse.osgi.framework.internal.core.AbstractBundle.start (AbstractBundle.java:256)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._start(FrameworkCommandProvider.java:239)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute (FrameworkCommandInterpreter.java:145)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java:293)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.console(FrameworkConsole.java :278)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:213)
 at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError: org/apache/activemq/ActiveMQConnection
 at producerapp.Activator.start(Activator.java:50)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:991)
 at java.security.AccessController.doPrivileged(Native Method)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:985)
 ... 13 more
Nested Exception:
java.lang.NoClassDefFoundError: org/apache/activemq/ActiveMQConnection
 at producerapp.Activator.start(Activator.java:50)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:991)
 at java.security.AccessController.doPrivileged(Native Method)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator (BundleContextImpl.java:985)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:966)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)
 at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._start(FrameworkCommandProvider.java:239)
 at sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute (FrameworkCommandInterpreter.java:145)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java:293)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.console(FrameworkConsole.java :278)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:213)
 at java.lang.Thread.run(Unknown Source)
Nested Exception:
java.lang.NoClassDefFoundError: org/apache/activemq/ActiveMQConnection
 at producerapp.Activator.start(Activator.java:50)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:991)
 at java.security.AccessController.doPrivileged(Native Method)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:985)
 at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:966)
 at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker (BundleHost.java:317)
 at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandProvider._start(FrameworkCommandProvider.java :239)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke (Unknown Source)
 at org.eclipse.osgi.framework.internal.core.FrameworkCommandInterpreter.execute(FrameworkCommandInterpreter.java:145)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.docommand(FrameworkConsole.java :293)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.console(FrameworkConsole.java:278)
 at org.eclipse.osgi.framework.internal.core.FrameworkConsole.run(FrameworkConsole.java:213)
 at java.lang.Thread.run (Unknown Source)
 
Regards,
--
TransitWang/WangZhu
Computer School,Northwestern Polytechnical University