Hi I'm getting a Null pointer exception when I try to activate one of my
pages once a link is clicked. The Tapestry exception report page does
not show up. Any Help is appreciated :).
Raul.
Page class:
public abstract class News extends AbstractCMSPage implements
IExternalPage {
public abstract Integer getArticleId();
public abstract void setArticleId(Integer articleId);
public void activateExternalPage(Object[] params, IRequestCycle cycle) {
setArticleId((Integer) params[0]);
}
}
Listener method in ArticleLink Component:
@InjectPage("News")
public abstract News getNewsPage();
public IPage openArticlePage(Integer id) {
getNewsPage().setArticleId(id);
return getNewsPage();
}
Jetty browser display:
HTTP ERROR: 500
INTERNAL_SERVER_ERROR
RequestURI=/portal/Home,frontPageNews2.$ArticleLink_1.itemLink.direct
Powered by Jetty://
Stack Trace:
1001682 [BoundedThreadPool0-13] WARN org.mortbay.log -
/portal/Home,frontPageNews2.$ArticleLink_1.itemLink.direct
java.lang.NullPointerException
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.buildDescription(ExceptionAnalyzer.java:177)
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.analyze(ExceptionAnalyzer.java:86)
at
org.apache.tapestry.util.exception.ExceptionAnalyzer.reportException(ExceptionAnalyzer.java:378)
at
org.apache.tapestry.error.RequestExceptionReporterImpl.reportRequestException(RequestExceptionReporterImpl.java:59)
at
$RequestExceptionReporter_1095175e27d.reportRequestException($RequestExceptionReporter_1095175e27d.java)
at
org.apache.tapestry.error.ExceptionPresenterImpl.presentException(ExceptionPresenterImpl.java:53)
at
$ExceptionPresenter_1095175e265.presentException($ExceptionPresenter_1095175e265.java)
at
org.apache.tapestry.engine.AbstractEngine.activateExceptionPage(AbstractEngine.java:121)
at
org.apache.tapestry.engine.AbstractEngine.service(AbstractEngine.java:280)
at
org.apache.tapestry.services.impl.InvokeEngineTerminator.service(InvokeEngineTerminator.java:60)
at
$WebRequestServicer_1095175e2bb.service($WebRequestServicer_1095175e2bb.java)
at
org.apache.tapestry.services.impl.DisableCachingFilter.service(DisableCachingFilter.java:48)
at
$WebRequestServicerFilter_1095175e2bd.service($WebRequestServicerFilter_1095175e2bd.java)
at
$WebRequestServicer_1095175e2bf.service($WebRequestServicer_1095175e2bf.java)
at
$WebRequestServicer_1095175e2b7.service($WebRequestServicer_1095175e2b7.java)
at
org.apache.tapestry.services.impl.WebRequestServicerPipelineBridge.service(WebRequestServicerPipelineBridge.java:56)
at
$ServletRequestServicer_1095175e29b.service($ServletRequestServicer_1095175e29b.java)
at
org.apache.tapestry.request.DecodedRequestInjector.service(DecodedRequestInjector.java:55)
at
$ServletRequestServicerFilter_1095175e297.service($ServletRequestServicerFilter_1095175e297.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
org.apache.tapestry.multipart.MultipartDecoderFilter.service(MultipartDecoderFilter.java:52)
at
$ServletRequestServicerFilter_1095175e295.service($ServletRequestServicerFilter_1095175e295.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
org.apache.tapestry.services.impl.SetupRequestEncoding.service(SetupRequestEncoding.java:53)
at
$ServletRequestServicerFilter_1095175e299.service($ServletRequestServicerFilter_1095175e299.java)
at
$ServletRequestServicer_1095175e29d.service($ServletRequestServicer_1095175e29d.java)
at
$ServletRequestServicer_1095175e28f.service($ServletRequestServicer_1095175e28f.java)
at
org.apache.tapestry.ApplicationServlet.doService(ApplicationServlet.java:141)
at
org.apache.tapestry.ApplicationServlet.doGet(ApplicationServlet.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:747)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:860)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:408)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:820)
at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:811)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292)
at
org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:108)
at
org.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:197)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:143)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:246)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:220)
at
org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
at
org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173)
at
org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:120)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:811)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:351)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:177)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:164)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:534)
at org.mortbay.jetty.Server.handle(Server.java:220)
at org.mortbay.jetty.Server.handle(Server.java:201)
at org.mortbay.jetty.HttpConnection.doHandler(HttpConnection.java:362)
at org.mortbay.jetty.HttpConnection.access$1600(HttpConnection.java:45)
at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:592)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:486)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:195)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:297)
at
org.mortbay.jetty.nio.SelectChannelConnector$HttpEndPoint.run(SelectChannelConnector.java:676)
at
org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:402)
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