Check your Hessian version. I think last time I worked with it I had Hessian 3.0.20
2009/6/19 tristan <[email protected]> > I've developed a small application with Apache Cayenne using Cayenne Web > Service. The application was developed on Eclipse using the Jetty plugin. > This was the only way to make it work, so I can start writing code. > The problem is when I try to deploy the application using a standalone > Jetty server, the client java application throws an exception for this code > (and any example from online documentation): ClientConnection connection > = new HessianConnection( > "http://localhost:8080/reselleri/cayenne-service";); > DataChannel channel = new ClientChannel(connection); > ObjectContext context = new CayenneContext(channel); > > SelectQuery select = new SelectQuery(Administrator.class); > // this is where the exception is thrown ! > List rezultat = context.performQuery(select); > > If I run the server web service inside Eclipse Jetty Plugin, it works > perfectly: > > INFO QueryLogger: Detected and installed adapter: > org.apache.cayenne.dba.derby.DerbyAdapter > INFO QueryLogger: SELECT t0.denumire, t0.parola, t0.username, t0.id FROM > ADMINISTRATOR t0 - prepared in 47 ms. > INFO QueryLogger: === returned 2 rows. - took 1344 ms. > > > If I run the service with standalone Jetty or Tomcat (I've tried many > versions, even for Cayenne+dependencies, it' the same) the client won't > work, as you can see in the exception output below. I can mention that while > running Tomcat/Jetty, I don't have problems running servlets using Cayenne > on server side. Only the client has problems. It seems that for some reason, > the cayenne web service+client works only with Jetty plugin. What can I do > ? > > Thank you very much for your attention. > > TristanBelow is the stdout from client, the connection is fine, but I can't > perform queries.19.06.2009 12:21:08 > org.apache.cayenne.remote.hessian.HessianConnection connect > INFO: Connecting to [http://localhost:8080/reselleri/cayenne-service] - > dedicated session. > 19.06.2009 12:21:09 org.apache.cayenne.remote.hessian.HessianConnection > connect > INFO: === Connected, session: > org.apache.cayenne.remote.remotesess...@1de3f2d[sessionid=863r7x7r6ilu] - > took 1125 ms. > 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage > INFO: --- Message 0: Bootstrap > 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage > INFO: === Message 0: Bootstrap done - took 391 ms. > 19.06.2009 12:21:09 org.apache.cayenne.remote.BaseConnection sendMessage > INFO: --- Message 1: Query > com.caucho.hessian.io.HessianProtocolException: > at com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java) > at $Proxy0.processMessage(Unknown Source) > at > org.apache.cayenne.remote.hessian.HessianConnection.doSendMessage(HessianConnection.java:140) > at > org.apache.cayenne.remote.BaseConnection.sendMessage(BaseConnection.java:73) > at org.apache.cayenne.remote.ClientChannel.send(ClientChannel.java:242) > at > org.apache.cayenne.remote.ClientChannel.onQuery(ClientChannel.java:88) > at > org.apache.cayenne.util.ObjectContextQueryAction.runQuery(ObjectContextQueryAction.java:217) > at > org.apache.cayenne.CayenneContextQueryAction.execute(CayenneContextQueryAction.java:47) > at org.apache.cayenne.CayenneContext.onQuery(CayenneContext.java:290) > at > org.apache.cayenne.CayenneContext.performQuery(CayenneContext.java:279) > at com.distributie.client.FormPrincipal.Connect(FormPrincipal.java:170) > at com.distributie.client.FormPrincipal.<init>(FormPrincipal.java:145) > ----------skipped lines ------------ > > > >
