java.lang.NoClassDefFoundError: [Lcom/mycompany/myproject/data/FooDataClass; is not the same ClassNotFoundException<http://stackoverflow.com/questions/1457863/what-is-the-difference-between-noclassdeffounderror-and-classnotfoundexception>, so perhaps you have a dependency or is not serializable or instanciable in runtime.
Is serializable? have final fields? have a default constructor? 2011/8/3 Mike Dee <mdichiapp...@gmail.com> > I added a .gwt.xml file to the OldProject and inherited it from > NewUiProject. Only the data objects (pojos) from the OldProject are > listed in the source path of the .gwt.xml. > > > On Aug 3, 11:29 am, Juan Pablo Gardella <gardellajuanpa...@gmail.com> > wrote: > > RPC only work as transport layer between client and server side, so you > must > > put old project as a jar and define *.gwt.xml inside and define the > module. > > In NewUiProject inherit it. You can't said that the POJO is only in > server > > side if RPC layer try serialize/deseralize > > > > Juan > > > > 2011/8/3 Mike Dee <mdichiapp...@gmail.com> > > > > > > > > > > > > > > > > > I'm updating an existing web app to use GWT and encountering a problem > > > on server side. A goal is to reuse the server side data classes, > > > which are stored in a separate Eclipse project. > > > > > I have two projects: OldProject, which has old data classes (as POJOs) > > > and NewUiProject, which is GWT. > > > > > If I put the OldProject POJOs in the NewUiProject, all is fine. Of > > > course the POJOs don't fall under the "shared" directory, so I created > > > a .gwt.xml file and inherited that into the NewUiProject .gwt.xml. > > > > > If the OldProject POJOs are left in their project and NewUiProject > > > inherits the .gwt.xml from OldProject a runtime error occurs. > > > > > [ERROR] javax.servlet.ServletContext log: Exception while dispatching > > > incoming RPC call > > > java.lang.NoClassDefFoundError: [Lcom/mycompany/myproject/data/ > > > FooDataClass; > > > at java.lang.Class.getDeclaredMethods0(Native Method) > > > at java.lang.Class.privateGetDeclaredMethods(Unknown Source) > > > at java.lang.Class.getMethod0(Unknown Source) > > > at java.lang.Class.getMethod(Unknown Source) > > > at > com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:299) > > > at > > > > > > com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java: > > > 206) > > > 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) > > > > > It looks like FooDataClass is simply not found on the server side and > > > I can't figure out why. I am using Eclipse and NewUiProject has a > > > project reference to OldProject and also includes OldProject in the > > > Java Build Path Projects. If there were a project with references > > > across projects I don't think the project would compile. I also tried > > > packaging a JAR from OldProject and including it in NewUiProject, but > > > that makes no difference. > > > > > I don't think this is a case of not inheriting classes so that GWT > > > knows to compile them in the client side. That would produce an error > > > when starting up the client and an error message about not being able > > > to find the source code for the data classes. I'm mot seeing that > > > error. The UI comes up and the error is thrown when interacting with > > > the UI in such a way as to cause an RPC. > > > > > Any ideas? > > > > > Thanks, > > > Mike > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google Web Toolkit" group. > > > To post to this group, send email to > google-web-toolkit@googlegroups.com. > > > To unsubscribe from this group, send email to > > > google-web-toolkit+unsubscr...@googlegroups.com. > > > For more options, visit this group at > > >http://groups.google.com/group/google-web-toolkit?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google Web Toolkit" group. > To post to this group, send email to google-web-toolkit@googlegroups.com. > To unsubscribe from this group, send email to > google-web-toolkit+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-web-toolkit?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
