NPE in TemplatePageFilter.applyDecorator()
------------------------------------------
Key: WW-2712
URL: https://issues.apache.org/struts/browse/WW-2712
Project: Struts 2
Issue Type: Bug
Components: Plugin - SiteMesh
Affects Versions: 2.1.2
Reporter: Richard Wallace
When the ActionContextCleanUp->FreeMarkerPageFilter->FilterDispatcher chain are
being used and the cleanup filter is applied to /* and the page filter is
applied to /* and the filter dispatcher is only applied to *.action, the
following NPE occurs:
java.lang.NullPointerException
at
org.apache.struts2.sitemesh.TemplatePageFilter.applyDecorator(TemplatePageFilter.java:104)
at
com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:62)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1041)
at
org.apache.struts2.dispatcher.ActionContextCleanUp.doFilter(ActionContextCleanUp.java:97)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1041)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:354)
In looking at TemplatePageFilter, it seems to assume that a Dispatcher has been
set for the thread. Since the FilterDispatcher is never hit, this is not the
case. It seems the only way to make this work is to make sure all three of the
filters is applied to the same path.
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