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[GWT] Could not initialize class org.eclipse.emf.server.ecore.resource.URIServiceImpl [message #872629]

Wed, 16 May 2012 13:45

Alex Lenk

Messages: 4
Registered: May 2012

Junior Member

Hello,

I recently tried to run my EMF model as an Web application and used the GWT editor project generation for this. Unfortunately when starting the GWT Web Application the application loads but the console outputs the following stack trace:

Mai 16, 2012 3:05:19 PM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: Error for /Project.ProjectEditor/uriService
java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.emf.server.ecore.resource.URIServiceImpl
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at java.lang.Class.newInstance0(Class.java:372)
at java.lang.Class.newInstance(Class.java:325)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:428)
at org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:60)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:78)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:369)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

Has anyone an idea how I to fix this?

Thanks,
Alex

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Re: [GWT] Could not initialize class org.eclipse.emf.server.ecore.resource.URIServiceImpl [message #872743 is a reply to message #872629]

Wed, 16 May 2012 18:25

Ed Merks

Messages: 33137
Registered: July 2009

Senior Member

Alex,

That should be on the classpath. In particular, the builder EMF adds
should have automatically copied the org.eclipse.emf.ecore jar to the
war/WEB-INF/lib folder. It does that for me...

On 16/05/2012 3:46 PM, Alex Lenk wrote:
> Hello,
>
> I recently tried to run my EMF model as an Web application and used
> the GWT editor project generation for this. Unfortunately when
> starting the GWT Web Application the application loads but the console
> outputs the following stack trace:
>
> Mai 16, 2012 3:05:19 PM com.google.apphosting.utils.jetty.JettyLogger
> warn
> WARNING: Error for /Project.ProjectEditor/uriService
> java.lang.NoClassDefFoundError: Could not initialize class
> org.eclipse.emf.server.ecore.resource.URIServiceImpl
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
> at java.lang.Class.newInstance0(Class.java:372)
> at java.lang.Class.newInstance(Class.java:325)
> at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
> at
> org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:428)
> at
> org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
> at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
> at
> com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:60)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
> at
> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
> at
> com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:78)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at
> com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:369)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
>
>
>
> Has anyone an idea how I to fix this?
>
> Thanks,
> Alex

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: [GWT] Could not initialize class org.eclipse.emf.server.ecore.resource.URIServiceImpl [message #875245 is a reply to message #872743]

Tue, 22 May 2012 11:59

Alex Lenk

Messages: 4
Registered: May 2012

Junior Member

It doesn't work for me. The libs are in the lib folder but the error pops up anyway.
I try a new clean installation and see if the problem still exists. Thanks!

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Re: [GWT] Could not initialize class org.eclipse.emf.server.ecore.resource.URIServiceImpl [message #1357082 is a reply to message #875245]

Thu, 15 May 2014 11:00

Adrian Rutle

Messages: 20
Registered: July 2009

Junior Member

Hi Alex

Did starting from scratch help in your case?

I have had the same problem for while and tried clean installation also, without any luck!

Actually I am not sure if this is related to the second warning I get
WARN::Nested in java.lang.ExceptionInInitializerError:
java.lang.SecurityException: class "org.eclipse.emf.ecore.impl.EFactoryImpl"'s signer information does not match signer information of other classes in the same package

I have seen another Forum topic on the "signer" problem. However I did not understand completely how to solve that problem either.

The problem arises when I try "save" from the created website.

Any info is appreciated.

Kind regards

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