using gwt with hibernate example

[Mic L]

HI,
I have found a nice article "using gwt with hibernate example". However, I have trouble to import this code into Eclipse. I always get the following warnings, but the app does not start:
[WARN] Server class 'org.eclipse.jetty.servlet.listener.ELContextCleaner' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/home/mic/apps/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/gwt-dev.jar' to the web app classpath for this session
   For additional info see: file:/home/mic/apps/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/doc/helpInfo/webAppClassPath.html
[WARN] No startup URLs supplied and no plausible ones found -- use -startupUrl

How is it possible to import the code into Eclipse and would ActiveJDBC solves Hibernates problems?

Thank you in advance.

Mic

[Thomas Broyer]

On Saturday, March 29, 2014 2:30:06 PM UTC+1, Mic L wrote:

HI,
I have found a nice article "using gwt with hibernate example". However, I have trouble to import this code into Eclipse. I always get the following warnings, but the app does not start:
[WARN] Server class 'org.eclipse.jetty.servlet.listener.ELContextCleaner' could not be found in the web app, but was found on the system classpath
   [WARN] Adding classpath entry 'file:/home/mic/apps/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/gwt-dev.jar' to the web app classpath for this session
   For additional info see: file:/home/mic/apps/eclipse/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/doc/helpInfo/webAppClassPath.html

This is a bug in 2.6.0 that will be fixed in 2.6.1. But it doesn't prevent apps form running.

 

[WARN] No startup URLs supplied and no plausible ones found -- use -startupUrl

When launching the app (https://developers.google.com/eclipse/docs/running_and_debugging_2_0) make sure there's a --startupUrl argument in the Arguments tab with a value of Musicstore.html (i.e. --startupUrl MusicStore.html). Note that it should go *before* the module's name.

[Mic L]

Thank you it was that problem and now it works.

[Daniel Plop]

I get following error when trying to add a record:

Starting Jetty on port 8888

   [WARN] Exception while dispatching incoming RPC call

com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract java.lang.Long com.google.musicstore.client.MusicStoreService.saveRecord(com.google.musicstore.client.dto.RecordDTO)' threw an unexpected exception: java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/Session;

at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:389)

at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:579)

at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)

at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)

at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)

at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)

at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)

at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)

at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)

at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)

at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)

at org.mortbay.jetty.Server.handle(Server.java:324)

at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)

at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)

at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)

at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)

at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)

at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)

at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)

Caused by: java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/Session;

at com.google.musicstore.server.MusicStoreServiceImpl.saveRecord(MusicStoreServiceImpl.java:68)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:561)

... 22 more

I don't understand what could be the problem ? 

[Davide Micheletti]

NoSuchMethodError

Have you added it into your server's interfaces??  

If yes, have you reloaded the server class?

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[Daniel Plop]

What does "Have you added it into your server's interfaces?" mean. If you refer to the fact that I should add it to Interface "Service" and Interface "ServiceAsync". Yes I did.

What does "reload the server class" mean ?.

I basically followed all the steps from this tutorial http://www.gwtproject.org/articles/using_gwt_with_hibernate.html .To be mentioned that I used DTO as integration strategy.

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