| servlet linkage error when using servlet bridge [message #93233] |
Mon, 30 July 2007 04:54  |
Eclipse User |
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Originally posted by: dkrebs.tibco.com
Hi,
This one is totally killing me. I'm trying to run the servlet bridge
framework in tomcat6 and have traced down the issue to this part of the
log file, I get the general idea that its complaining about different
class versions of the servlet class but don't know how to fix the problem,
any ideas would be appreciated. - Duncan
used by: java.lang.LinkageError: loader constraint violation: when
resolving method
" org.eclipse.equinox.servletbridge.BridgeServlet.registerServ letDelegate(Ljavax/servlet/http/HttpServlet;)V "
the class loader (instance of
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the current
class, org/eclipse/equinox/http/servletbridge/internal/Activator, and the
class loader (instance of org/apache/catalina/loader/WebappClassLoader)
for resolved class, org/eclipse/equinox/servletbridge/BridgeServlet, have
different Class objects for the type javax/servlet/http/HttpServlet used
in the signature
at
org.eclipse.equinox.http.servletbridge.internal.Activator.st art(Activator.java:28)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:999)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:993)
... 8 moreused by: java.lang.LinkageError: loader constraint violation:
when resolving method
" org.eclipse.equinox.servletbridge.BridgeServlet.registerServ letDelegate(Ljavax/servlet/http/HttpServlet;)V "
the class loader (instance of
org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the current
class, org/eclipse/equinox/http/servletbridge/internal/Activator, and the
class loader (instance of org/apache/catalina/loader/WebappClassLoader)
for resolved class, org/eclipse/equinox/servletbridge/BridgeServlet, have
different Class objects for the type javax/servlet/http/HttpServlet used
in the signature
at
org.eclipse.equinox.http.servletbridge.internal.Activator.st art(Activator.java:28)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:999)
at java.security.AccessController.doPrivileged(Native Method)
at
org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:993)
... 8 more
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| Re: servlet linkage error when using servlet bridge [message #93266 is a reply to message #93233] |
Mon, 30 July 2007 13:10  |
 Simon Kaegi
Messages: 381
Registered: July 2009 |
Senior Member |
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Do you have the javax.servlet (or org.eclipse.equinox.servlet.api) bundle in
your install?
You shouldn't have this with the servletbridge. The javax.servlet packages
are exposed with a framework extension bundle called
org.eclipse.equinox.servlletbridge.extensionbundle.
HTH
-Simon
"Duncan Krebs" <dkrebs@tibco.com> wrote in message
news:6bdf9602fa7fed6c679c38225a3237ae$1@www.eclipse.org...
> Hi, This one is totally killing me. I'm trying to run the servlet bridge
> framework in tomcat6 and have traced down the issue to this part of the
> log file, I get the general idea that its complaining about different
> class versions of the servlet class but don't know how to fix the problem,
> any ideas would be appreciated. - Duncan
>
> used by: java.lang.LinkageError: loader constraint violation: when
> resolving method
> " org.eclipse.equinox.servletbridge.BridgeServlet.registerServ letDelegate(Ljavax/servlet/http/HttpServlet;)V "
> the class loader (instance of
> org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the current
> class, org/eclipse/equinox/http/servletbridge/internal/Activator, and the
> class loader (instance of org/apache/catalina/loader/WebappClassLoader)
> for resolved class, org/eclipse/equinox/servletbridge/BridgeServlet, have
> different Class objects for the type javax/servlet/http/HttpServlet used
> in the signature
> at
> org.eclipse.equinox.http.servletbridge.internal.Activator.st art(Activator.java:28)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:999)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:993)
> ... 8 moreused by: java.lang.LinkageError: loader constraint violation:
> when resolving method
> " org.eclipse.equinox.servletbridge.BridgeServlet.registerServ letDelegate(Ljavax/servlet/http/HttpServlet;)V "
> the class loader (instance of
> org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the current
> class, org/eclipse/equinox/http/servletbridge/internal/Activator, and the
> class loader (instance of org/apache/catalina/loader/WebappClassLoader)
> for resolved class, org/eclipse/equinox/servletbridge/BridgeServlet, have
> different Class objects for the type javax/servlet/http/HttpServlet used
> in the signature
> at
> org.eclipse.equinox.http.servletbridge.internal.Activator.st art(Activator.java:28)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl$2 .run(BundleContextImpl.java:999)
> at java.security.AccessController.doPrivileged(Native Method)
> at
> org.eclipse.osgi.framework.internal.core.BundleContextImpl.s tartActivator(BundleContextImpl.java:993)
> ... 8 more
>
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| Re: servlet linkage error when using servlet bridge [message #93297 is a reply to message #93266] |
Mon, 30 July 2007 14:27 |
| Eclipse User |
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Originally posted by: dkrebs.tibco.com
Simon,
Thanks for the post, I had a lib bundle that contained the API and was
able to get it figured out. On a high level I think running OSGI in a
servlet container is great, especially because I've been able to wrap the
web.xml as extension points and also break my UI into extension points. I
just get nervous when things don't work in the servlet container because I
don't know of a way to debug an OSGI app while in tomcat for example,
hopefully this will take care of it though, if not some tutorials on class
loading might help. - Duncan
Simon Kaegi wrote:
> Do you have the javax.servlet (or org.eclipse.equinox.servlet.api) bundle in
> your install?
> You shouldn't have this with the servletbridge. The javax.servlet packages
> are exposed with a framework extension bundle called
> org.eclipse.equinox.servlletbridge.extensionbundle.
> HTH
> -Simon
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