Friday, July 29, 2011

Re: GWT Spring related post

I think that is a classic... you probably instantiated the controller
in an application-context rather than a web-application-context

On Jul 27, 6:49 pm, spandu <spandana....@gmail.com> wrote:
> Hi,
>
> I am using GWT 2.0 integrated with Spring in the application, after
> executing the application....when I try to login into the
> application..I am getting the following error. I have searched a lot
> to find out the solution, if anyone has encountered this kind of error
> and found some solution, please help me out with this, I would atleast
> need what might be the root cause for this exception..thanks in
> advance.
>
> [WARN] Exception while dispatching incoming RPC call
> java.lang.NullPointerException
>         at javax.servlet.GenericServlet.getServletName(GenericServlet.java:
> 322)
>         at javax.servlet.GenericServlet.log(GenericServlet.java:277)
>         at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.doGetSerializationPolicy(RemoteServiceServlet.java:
> 237)
>         at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.getSerializationPolicy(RemoteServiceServlet.java:
> 117)
>         at
> com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.prepareToRead(ServerSerializationStreamReader.java:
> 429)
>         at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:234)
>         at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:
> 164)
>         at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:
> 86)
>         at
> com.shris.emr.server.common.rpc.AbstractShrisRpcSerivce.handleRequest(AbstractShrisRpcSerivce.java:
> 60)
>         at
> org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:
> 48)
>         at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:
> 771)
>         at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:
> 716)
>         at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:
> 647)
>         at
> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:
> 563)
>         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:
> 487)
>         at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1097)
>         at
> org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter.doFilterInternal(OpenEntityManagerInViewFilter.java:
> 113)
>         at
> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:
> 76)
>         at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1088)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:343)
>         at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:
> 109)
>         at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:
> 83)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:
> 97)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:
> 100)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:
> 78)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:
> 54)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:
> 35)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:
> 187)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:
> 105)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:
> 79)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:
> 109)
>         at org.springframework.security.web.FilterChainProxy
> $VirtualFilterChain.doFilter(FilterChainProxy.java:355)
>         at
> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:
> 149)
>         at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:
> 237)
>         at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:
> 167)
>         at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1088)
>         at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> 360)
>         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:
> 729)
>         at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 405)
>         at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
> 152)
>         at
> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:
> 49)
>         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:
> 505)
>         at org.mortbay.jetty.HttpConnection
> $RequestHandler.content(HttpConnection.java:843)
>         at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
>         at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>         at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>         at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:
> 395)
>         at org.mortbay.thread.QueuedThreadPool
> $PoolThread.run(QueuedThreadPool.java:488)
> [ERROR] 500 - POST /<ProjectName>/LoginCheck.do (127.0.0.1) 57 bytes
>    Request headers
>       Host: 127.0.0.1:8888
>       User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:
> 1.9.2.18) Gecko/20110614 Firefox/3.6.18
>       Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/
> *;q=0.8
>       Accept-Language: en-us,en;q=0.5
>       Accept-Encoding: gzip,deflate
>       Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
>       Keep-Alive: 115
>       Connection: keep-alive
>       Referer:http://127.0.0.1:8888/Nexia/hosted.html?Nexia
>       Cookie: JSESSIONID=1ugijvzplkaeq
>       X-GWT-Permutation: HostedMode
>       X-GWT-Module-Base:http://127.0.0.1:8888/Nexia/
>       Content-Type: text/x-gwt-rpc; charset=utf-8
>       Content-Length: 137
>       Pragma: no-cache
>       Cache-Control: no-cache
>    Response headers
>       Content-Type: text/plain; charset=iso-8859-1
>       Expires: Sat, 1 January 2000 12:00:00 GMT
>       Cache-Control: no-store, no-cache, must-revalidate
>       Cache-Control: post-check=0, pre-check=0
>       Pragma: no-cache
>
> Note : The app works fine with gwt-1.6.4

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