This might help: Joost Schouten (mailing lists) schrieb:
Hi,I'm getting a NPE in tapestries reflected Request after I contributed a new RequestFilter (LocaleFilter below; see snippet). My pages appear as expected which leads me to assume it has something to do with the Request being completed when my code tries to access it (the stack hints that to). But since debugging is hard and the NPE non-descriptive I can't figure out what exactly is going on. Does anyone know why I get this NPE and if so, can we make it more descriptive than just this descriptionless NPE? --------------- my code ------------ public static void contributeRequestHandler( final OrderedConfiguration<RequestFilter> configuration, @InjectService("Utf8Filter") final RequestFilter utf8Filter, @InjectService("TransactionFilter") final RequestFilter transactionFilter, @InjectService("SecurityFilter") final RequestFilter securityFilter, @InjectService("LocaleFilter") final RequestFilter localeFilter) { configuration.add("LocaleFilter", localeFilter); configuration.add("Utf8Filter", utf8Filter); configuration.add("TransactionFilter", transactionFilter); configuration.add("SecurityFilter", securityFilter); } public RequestFilter buildLocaleFilter( @InjectService("PersistentLocale") final PersistentLocale persistantLocale, @InjectService("ThreadLocale") final ThreadLocale threadLocale) { return new RequestFilter() { public boolean service(Request request, Response response, RequestHandler handler) throws IOException { persistantLocale.set(threadLocale.getLocale()); return handler.service(request, response); } }; } --------- the exception --------------- java.lang.NullPointerException at $Request_11f4b87384f.getSession($Request_11f4b87384f.java) at $Request_11f4b87381c.getSession($Request_11f4b87381c.java) at org.apache.tapestry5.internal.services.RestoreDirtySessionObjects.requestDidComplete(RestoreDirtySessionObjects.java:35) at org.apache.tapestry5.internal.services.EndOfRequestEventHubImpl.fire(EndOfRequestEventHubImpl.java:40) at $EndOfRequestEventHub_11f4b873820.fire($EndOfRequestEventHub_11f4b873820.java) at org.apache.tapestry5.services.TapestryModule$4.service(TapestryModule.java:762) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at org.apache.tapestry5.services.TapestryModule$3.service(TapestryModule.java:748) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:85) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at com.joostschouten.common.http.tapestrybase.services.SecurityFilter.service(SecurityFilter.java:151) at $RequestFilter_11f4b87383a.service($RequestFilter_11f4b87383a.java) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at com.joostschouten.common.http.tapestrybase.services.TransactionFilter.service(TransactionFilter.java:48) at $RequestFilter_11f4b873839.service($RequestFilter_11f4b873839.java) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at com.joostschouten.common.http.tapestrybase.services.BaseModule$2.service(BaseModule.java:171) at $RequestFilter_11f4b873838.service($RequestFilter_11f4b873838.java) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at com.joostschouten.common.http.tapestrybase.services.BaseModule$3.service(BaseModule.java:188) at $RequestFilter_11f4b87383b.service($RequestFilter_11f4b87383b.java) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:90) at org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:81) at org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:85) at org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:103) at $RequestHandler_11f4b87383f.service($RequestHandler_11f4b87383f.java) at $RequestHandler_11f4b873831.service($RequestHandler_11f4b873831.java) at org.apache.tapestry5.services.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:193) at org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:53) at $HttpServletRequestHandler_11f4b873833.service($HttpServletRequestHandler_11f4b873833.java) at org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:44) at $HttpServletRequestHandler_11f4b873833.service($HttpServletRequestHandler_11f4b873833.java) at org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62) at $HttpServletRequestFilter_11f4b873830.service($HttpServletRequestFilter_11f4b873830.java) at $HttpServletRequestHandler_11f4b873833.service($HttpServletRequestHandler_11f4b873833.java) at org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:710) at $HttpServletRequestHandler_11f4b873833.service($HttpServletRequestHandler_11f4b873833.java) at $HttpServletRequestHandler_11f4b87382d.service($HttpServletRequestHandler_11f4b87382d.java) at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:127) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:757) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:416) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:502) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:826) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:523) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:377) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:497) --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
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