I have an Java App Engine project using SDK 1.3.5 and the latest Restlet GAE 2.0rc4 to implement some restful services. Everything worked well (this has been in production for 6 months) until I added GWT 2.0.4 to the project. As soon as I check use GWT on in the control panel in Eclipse (without even adding a module) my services start to fail in the development server with the following class not found exception:
Couldn't write the XML representation: Provider org.apache.xalan.processor.TransformerFactoryImpl not found This exception happens on the way out of my Restlet, after a GET of a lists of entities, as it tries to turn my DomRepresentation into the response payload. I've found that if I remove the gwt-dev.jar, the exception does not happen. Of course, I can't use the development server if I do that. Again, this all works fine without GWT. Here is the relevant parts of the trace: SEVERE: An exception occured writing the response entity java.io.IOException: Couldn't write the XML representation: Provider org.apache.xalan.processor.TransformerFactoryImpl not found at org.restlet.ext.xml.DomRepresentation.write(DomRepresentation.java: 287) at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java: 104) at org.restlet.engine.http.ServerCall.writeResponseBody(ServerCall.java: 502) at org.restlet.engine.http.ServerCall.sendResponse(ServerCall.java: 439) at org.restlet.ext.servlet.internal.ServletCall.sendResponse(ServletCall.java: 451) at org.restlet.engine.http.adapter.ServerAdapter.commit(ServerAdapter.java: 198) at org.restlet.engine.http.HttpServerHelper.handle(HttpServerHelper.java: 151) at org.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:1037) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.jav a:1166) at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter. java:51) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.jav a:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(Transactio nCleanupFilter.java:43) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.jav a:1157) at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilte r.java:122) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.jav a: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(DevAppEngineW ebAppContext.java:70) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at com.google.appengine.tools.development.JettyContainerService $ApiProxyHandler.han dle(JettyContainerService.java:349) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at org.mortbay.jetty.Server.handle(Server.java:326) -- 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-tool...@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.