[Yanel-dev] Exception re Welcome screen

[Michael Wechner]

Michael Wechner schrieb:
> Hi
>
> When loading the welcome screen
>
> http://127.0.0.1:8080/yanel/
>
> , then one receives within the log4j file the following exception

btw, after a second startup this exception doesn't show up anymore, so I 
guess because of the created session (cookie based) something doesn't 
exist in the
first place, whereas the LayoutSelector makes a wrong assumption.

Cheers

Michael
>
> 89529 2009-07-10 22:47:05,228 [http-8080-Processor24] ERROR 
> org.wyona.yanel.impl.resources.layoutselector.LayoutSelector.<init>():58  
> - error initializing template version checker session string
> 89530 2009-07-10 22:47:05,229 [http-8080-Processor24] ERROR 
> org.wyona.yanel.impl.resources.layoutselector.LayoutSelector.<init>():59  
> - java.lang.NullPointerException
> java.lang.NullPointerException
>    at 
> org.wyona.yanel.impl.resources.layoutselector.LayoutSelector.<init>(LayoutSelector.java:56) 
>
>    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
> Method)
>    at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
>
>    at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
>
>    at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
>    at java.lang.Class.newInstance0(Class.java:350)
>    at java.lang.Class.newInstance(Class.java:303)
>    at 
> org.wyona.yanel.core.ResourceManager.getResource(ResourceManager.java:89)
>    at 
> org.wyona.yanel.servlet.YanelServlet.getGlobalData(YanelServlet.java:1733) 
>
>    at org.wyona.yanel.servlet.YanelServlet.service(YanelServlet.java:199)
>    at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
>    at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252) 
>
>    at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) 
>
>    at 
> org.wyona.yanel.servlet.communication.YanelFilter.doFilter(YanelFilter.java:37) 
>
>    at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202) 
>
>    at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173) 
>
>    at 
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) 
>
>    at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) 
>
>    at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) 
>
>    at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) 
>
>    at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) 
>
>    at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) 
>
>    at 
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869) 
>
>    at 
> org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664) 
>
>    at 
> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) 
>
>    at 
> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) 
>
>    at 
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) 
>
>    at java.lang.Thread.run(Thread.java:613)
>
>
> It doesn't seem to hurt, but it doesn't look very nice either.
>
> Any idea how to fix this?
>
> Thanks
>
> Michi