Thx guys for quick response, but my problem was only in some Eclipse related file. I am using Eclipse SDK 4.6.1 with GWT Eclipse Plugin <https://github.com/gwt-plugins/gwt-eclipse-plugin>. After I have switched from GWT 2.7 to GWT 2.8 I missed in $PROJECT_DIR/.settings / com.gwtplugins.gwt.eclipse.core.prefs the additional line
*filesCopiedToWebInfLib=gwt-servlet.jar* .. this should be added by GWT Eclipse Plugin, I have just removed it by mistake. With this line everything works without any problem in EclipseIDE. For production build, we use mojo gwt-maven-plugin and there we also do not have a problem. Am Donnerstag, 6. Oktober 2016 09:20:49 UTC+2 schrieb Darren Smith: > > Hi, > > I am developing a <web-app> that contains within it > - a vanilla HttpServlet > - a GWT RPC Service implementation (RemoteServiceServlet) > > I am currently using [GWT2.8rc1]. > > Both servlets manipulate XML documents, and hence make calls to the > following code > DocumentBuilderFactory docfactory = DocumentBuilderFactory.newInstance(); > docfactory.setNamespaceAware(true); > > DocumentBuilder builder = docfactory.newDocumentBuilder(); // * problem > here * > > When I launch the application in Eclipse, using the embedded > Jetty container, the vanilla HttpServlet will fail at the line > DocumentBuilder builder = docfactory.newDocumentBuilder(); // * problem > here * > > The error message is > java.lang.ClassCastException: > org.apache.xerces.parsers.XIncludeAwareParserConfiguration cannot be cast > to org.apache.xerces.xni.parser.XMLParserConfiguration > > Having done some research, this exception is typically raised when there > are several Xerces implementations found on the classpath. > (I can only see Xerces implementations in gwt-dev and in Eclipse as a > plugin). > > > For the GWT RPC Service implementation, launched as part of the same > <web-app>, the XML document processing works fine - i.e. no exception > raised. > > If I comment out in the web.xml file the GWT-RPC servlet defintion, then > the vanilla HttpServlet will perform the XML document processing without an > exception. > > > Has anyone encountered similar problems? > > Darren Smith. > > > -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
