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Missing Constraint: Import-Package: javax.servlet; version="2.6.0 [message #1039551]

Fri, 12 April 2013 09:32

Phill Perryman

Messages: 214
Registered: July 2009

Senior Member

I have got a simple application deploying to Tomcat (7.0.34) just fine. Now I want to use the HTTP Session to pass info between EntryPoints. After some investigation I find that if I take my working app and only add javax.servlet and javax.servlet.http to the required bundles in the manifest, and make no other changes to the app whatsoever and re-export the war file it fails with an error in the tomcat work directory. I did not touch the war file and it does not contain any javax bundles. I have used Imported and not required. I found several references but they all seem quite old. If I delete the imports and export and deploy the war again it all works.

!ENTRY test 4 0 2013-04-12 10:04:13.537
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: The bundle "test_1.0.0.201304121003 [19]" could not be resolved. Reason: Missing Constraint: Import-Package: javax.servlet; version="2.6.0"
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolverError(AbstractBundle.java:1332)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.getResolutionFailureException(AbstractBundle.java:1316)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:323)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1176)
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)

!ENTRY org.eclipse.osgi 4 0 2013-04-12 10:04:13.540

<plugins>
<plugin id="org.apache.felix.gogo.command"/>
<plugin id="org.apache.felix.gogo.runtime"/>
<plugin id="org.apache.felix.gogo.shell"/>
<plugin id="org.eclipse.core.commands"/>
<plugin id="org.eclipse.equinox.common"/>
<plugin id="org.eclipse.equinox.console"/>
<plugin id="org.eclipse.equinox.ds"/>
<plugin id="org.eclipse.equinox.http.registry"/>
<plugin id="org.eclipse.equinox.http.servlet"/>
<plugin id="org.eclipse.equinox.http.servletbridge"/>
<plugin id="org.eclipse.equinox.registry"/>
<plugin id="org.eclipse.equinox.servletbridge"/>
<plugin id="org.eclipse.equinox.servletbridge.extensionbundle" fragment="true"/>
<plugin id="org.eclipse.equinox.util"/>
<plugin id="org.eclipse.osgi"/>
<plugin id="org.eclipse.osgi.services"/>
<plugin id="org.eclipse.rap.jface"/>
<plugin id="org.eclipse.rap.rwt"/>
<plugin id="org.eclipse.rap.rwt.osgi"/>
<plugin id="swb3.rwt.jars"/>
<plugin id="test"/>
</plugins>

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Re: Missing Constraint: Import-Package: javax.servlet; version="2.6.0 [message #1041504 is a reply to message #1039551]

Mon, 15 April 2013 07:23

Phill Perryman

Messages: 214
Registered: July 2009

Senior Member

After trying lots of things it turned out to be the inclusion of version information in the imported package. Eclipse automatically put it in so I though nothing of it. When I remove the version info from the imported packages it deploys fine. Posting it here in case any one else runs into the same problem with versioning of imported packages.

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