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From Jarek Gawor <jga...@gmail.com>
Subject NPE on Jetty
Date Tue, 26 Jan 2010 05:35:58 GMT
Hi,

While testing some web applications on Jetty very quickly I ran into
the following NPE (while accessing some jsps):

java.lang.NullPointerException
	at java.util.zip.Inflater.ensureOpen(Inflater.java:336)
	at java.util.zip.Inflater.getBytesWritten(Inflater.java:296)
	at java.util.zip.ZipFile$1.available(ZipFile.java:243)
	at org.apache.felix.framework.URLHandlersBundleURLConnection.connect(URLHandlersBundleURLConnection.java:125)
	at org.apache.felix.framework.URLHandlersBundleURLConnection.getInputStream(URLHandlersBundleURLConnection.java:134)
	at org.eclipse.jetty.util.resource.URLResource.exists(URLResource.java:102)
	at org.eclipse.jetty.server.handler.ContextHandler$Context.getResource(ContextHandler.java:1623)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:306)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:532)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:454)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:942)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:389)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:876)
	at org.apache.geronimo.jetty8.handler.GeronimoWebAppContext.doScope(GeronimoWebAppContext.java:115)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.Dispatcher.include(Dispatcher.java:172)

After googling a bit I found the following bug reports:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=193269 and
https://issues.apache.org/jira/browse/FELIX-1032. Looks like a JRE bug
but maybe we can prevent this problem by patching Jetty (by closing
the inputstreams) ?

Jarek

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