then, how can I access to pastgres database? Because I am using the
java.sql package that is permited.

On Apr 6, 3:14 pm, Juan Pablo Gardella <gardellajuanpa...@gmail.com>
wrote:
> You are used restricted classes: java.lang.NoClassDefFoundError:
> java.net.Socket is a restricted class.
>
> See whitelist <http://code.google.com/appengine/docs/java/jrewhitelist.html>
> classes
>
> 2011/4/6 Jose Luis Hernandez <jose.hernande...@gmail.com>
>
>
>
>
>
>
>
> > Well, the new error is:
>
> > [ERROR] javax.servlet.ServletContext log: Exception while dispatching
> > incoming RPC call
> > com.google.gwt.user.server.rpc.UnexpectedException: Service method
> > 'public abstract boolean
>
> > com.gwt.app.client.GreetingService.greetServer(java.lang.String,java.lang.S 
> > tring)
> > throws java.lang.Exception' threw an unexpected exception:
> > java.lang.NoClassDefFoundError: java.net.Socket is a restricted class.
> > Please see the Google  App Engine developer's guide for more details.
> >        at
> > com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> > 385)
> >        at
> > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > 588)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServi 
> > ceServlet.java:
> > 208)
> >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServi 
> > ceServlet.java:
> > 248)
> >        at
>
> > com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(Abstract 
> > RemoteServiceServlet.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:
> > 511)
> >        at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1166)
> >        at
>
> > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi 
> > lter.java:
> > 58)
> >        at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> >        at
>
> > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans 
> > actionCleanupFilter.java:
> > 43)
> >        at org.mortbay.jetty.servlet.ServletHandler
> > $CachedChain.doFilter(ServletHandler.java:1157)
> >        at
>
> > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile 
> > Filter.java:
> > 122)
> >        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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEn 
> > gineWebAppContext.java:
> > 70)
> >        at
> > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > 152)
> >        at com.google.appengine.tools.development.JettyContainerService
> > $ApiProxyHandler.handle(JettyContainerService.java:351)
> >        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.content(HttpConnection.java:938)
> >        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> >        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> >        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)
> > Caused by: java.lang.NoClassDefFoundError: java.net.Socket is a
> > restricted class. Please see the Google  App Engine developer's guide
> > for more details.
> >        at
>
> > com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime 
> > .java:
> > 51)
> >        at org.postgresql.core.PGStream.<init>(PGStream.java:62)
> >        at
>
> > org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionF 
> > actoryImpl.java:
> > 76)
> >        at
>
> > org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java 
> > :
> > 66)
> >        at
>
> > org.postgresql.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection 
> > .java:
> > 125)
> >        at
>
> > org.postgresql.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection 
> > .java:
> > 30)
> >        at org.postgresql.jdbc3.Jdbc3Connection.<init>(Jdbc3Connection.java:
> > 24)
> >        at org.postgresql.Driver.makeConnection(Driver.java:393)
> >        at org.postgresql.Driver.connect(Driver.java:267)
> >        at java.sql.DriverManager.getConnection(DriverManager.java:582)
> >        at java.sql.DriverManager.getConnection(DriverManager.java:185)
> >        at com.gwt.app.server.ManejadorBD.checkUser(ManejadorBD.java:11)
> >        at
>
> > com.gwt.app.server.GreetingServiceImpl.greetServer(GreetingServiceImpl.java 
> > :
> > 15)
> >        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >        at
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
> > 39)
> >        at
>
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp 
> > l.java:
> > 25)
> >        at java.lang.reflect.Method.invoke(Method.java:597)
> >        at
>
> > com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime 
> > .java:
> > 100)
> >        at
> > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > 569)
> >        ... 30 more
>
> > On Apr 5, 8:51 pm, Juan Pablo Gardella <gardellajuanpa...@gmail.com>
> > wrote:
> > > Put postgresql driver in WEB-INF/lib
>
> > > Juan
>
> > > 2011/4/5 Jose Luis Hernandez <jose.hernande...@gmail.com>
>
> > > > Hello!
> > > > I am trying to connect my gwt server with postgreSQL database, but I
> > > > do not get it. It appears the following error message:
>
> > > > [ERROR] javax.servlet.ServletContext log: Exception while dispatching
> > > > incoming RPC call
> > > > com.google.gwt.user.server.rpc.UnexpectedException: Service method
> > > > 'public abstract boolean
>
> > com.gwt.app.client.GreetingService.greetServer(java.lang.String,java.lang.S 
> > tring)
> > > > throws java.lang.Exception' threw an unexpected exception:
> > > > java.lang.NoClassDefFoundError: org.postgresql.core.Logger is a
> > > > restricted class. Please see the Google  App Engine developer's guide
> > > > for more details.
> > > >        at
> > > > com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:
> > > > 385)
> > > >        at
> > > > com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:
> > > > 588)
> > > >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServi 
> > ceServlet.java:
> > > > 208)
> > > >        at
>
> > com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServi 
> > ceServlet.java:
> > > > 248)
> > > >        at
>
> > com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(Abstract 
> > RemoteServiceServlet.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:
> > > > 511)
> > > >        at org.mortbay.jetty.servlet.ServletHandler
> > > > $CachedChain.doFilter(ServletHandler.java:1166)
> > > >        at
>
> > com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFi 
> > lter.java:
> > > > 58)
> > > >        at org.mortbay.jetty.servlet.ServletHandler
> > > > $CachedChain.doFilter(ServletHandler.java:1157)
> > > >        at
>
> > com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Trans 
> > actionCleanupFilter.java:
> > > > 43)
> > > >        at org.mortbay.jetty.servlet.ServletHandler
> > > > $CachedChain.doFilter(ServletHandler.java:1157)
> > > >        at
>
> > com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFile 
> > Filter.java:
> > > > 122)
> > > >        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.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEn 
> > gineWebAppContext.java:
> > > > 70)
> > > >        at
> > > > org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> > > > 152)
> > > >        at com.google.appengine.tools.development.JettyContainerService
> > > > $ApiProxyHandler.handle(JettyContainerService.java:351)
> > > >        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.content(HttpConnection.java:938)
> > > >        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
> > > >        at
> > org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> > > >        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)
> > > > Caused by:
>
> ...
>
> read more »

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