[Exist-open] Dependencies for JNLP servlet to work?

[Joe W. <jo...@gm...>]

Hi eXist list,

I'm getting the following error on my "trimmed" build of eXist when I
try to access /webstart in order to download the exist.jnlp file.  Are
there dependencies that I need in place in order for the /webstart URL
to work?  My webapp/WEB-INF/web.xml and controller-config.xml still
have the JNLP-related entries unmodified, and I have run the jarsigner
build script to sign the jars.  I can use an exist.jnlp file from my
build of trunk to connect to the "trimmed" build.

Here is the error I'm getting:

HTTP ERROR 500

Problem accessing /webstart. Reason:

    An error occurred: null
Caused by:

javax.servlet.ServletException: An error occurred: null
	at org.exist.webstart.JnlpServlet.doGet(JnlpServlet.java:113)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:534)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:476)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:517)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:184)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:240)
	at org.eclipse.jetty.server.Dispatcher.forward(Dispatcher.java:116)
	at org.exist.http.urlrewrite.Forward.doRewrite(Forward.java:47)
	at org.exist.http.urlrewrite.XQueryURLRewrite.doFilter(XQueryURLRewrite.java:217)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1323)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:474)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:480)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:934)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:404)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:184)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:869)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:151)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:346)
	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:581)
	at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:1040)
	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:592)
	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:214)
	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:411)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:526)
	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:41)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:528)
	at java.lang.Thread.run(Thread.java:636)
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Thanks for any tips - I'm happy to provide more info if you can point
me to what you need,
Joe