Serve files from folder outside web application in Jetty - web-services

Question

I have a Java web application (Eclipse/OSGI) on a Jetty server. I want to be able to serve static files to my web application from a folder outside of the web root. In my web application, I don't yet know the file name of the file I want to be served, so I want to take the filename (and/or path) as a VM parameter when I start my web application. For example:
I have an image - myImg.jpg - that I have put in a folder on the server file system, for example root/images/myImg.jpg. I want to take this as a VM parameter, e.g. "-DmyImg=/images/myImg.jpg/" so that I can get the image and display it on my web page. How can I accomplish this? Can I do this without creating a new Servlet?
Thanks in advance for any help!

Answer 1

Solved it!
This is what I added to my jetty.xml file:
<Set name="handler">
<New id="Handlers" class="org.eclipse.jetty.server.handler.HandlerCollection">
<Set name="handlers">
<Array type="org.eclipse.jetty.server.Handler">
<Item>
<New class="org.eclipse.jetty.server.handler.ContextHandler">
<Set name="contextPath">/myContextPath</Set>
<Set name="handler">
<New class="org.eclipse.jetty.server.handler.ResourceHandler">
<Set name="directoriesListed">false</Set>
<Set name="resourceBase">/actual/folder/on/file/system</Set>
</New>
</Set>
</New>
</Item>
[...other handlers...]
</Array>
</Set>
</New>
</Set>

Answer 2

#Farna: In your answer I am not able to understand how you are passing the file name as VM parameter. This is what I did.
I created testparvez.xml file in jetty webapps directory.
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.eclipse.org/configure.dtd">
<Configure class="org.eclipse.jetty.server.handler.ContextHandler">
<Set name="contextPath">/testparvez</Set>
<Set name="resourceBase"><SystemProperty name="mydir"/></Set>
<Set name="handler">
<New class="org.eclipse.jetty.server.handler.ResourceHandler">
<Set name="welcomeFiles">
<Array type="String">
<Item><SystemProperty name="myfile"/></Item>
</Array>
</Set>
<Set name="cacheControl">max-age=3600,public</Set>
</New>
</Set>
</Configure>
Then I start jetty as
java -jar start.jar jetty.port=8082 -Dmydir=C:/test/javadoc/ -Dmyfile=index.html
And finally I access from url http://localhost:8082/testparvez/