Post by Joakim ErdfeltDon't mix ResourceHandler and ServletContextHandler unless you *REALLY*
know what you are doing.
Eg: once you enter a ServletContextHandler you are subject to all of the
rules for a javax.servlet.ServletContext. You never exit a
ServletContextHandler, and Filters only apply within the request chain
within that ServletContext.
A sub-handler like you declared it, is NOT part of the ServletContext, or
the request chain in that ServletContext.
A better approach, stay with 1 ServletContextHandler, no ResourceHandler,
use the DefaultServlet instead to serve static content (its a MUCH better
choice then ResourceHandler anyway).
File codeDocsDir = new File("/tmp/code-docs");
Resource codeDocsResource = Resource.newResource(codeDocsDir);
File userGuideDocsDir = new File("/tmp/user-guide-docs");
Resource userGuideDocsResource = Resource.newResource(userGuideDocsDir);
ResourceCollection resources = new ResourceCollection(codeDocsResource,
userGuideDocsResource);
ServletContextHandler handler = new ServletContextHandler();
handler.setContextPath("/");
handler.setBaseResource(resources); // what static content resources are
used
FilterHolder frameOptions = new FilterHolder(FRAME_OPTIONS_FILTER);
frameOptions.setName("X-Frame-Options");
handler.addFilter(frameOptions, "/*", EnumSet.allOf(DispatcherType.c
lass));
handler.setContextPath(contextPath);
ServletHolder holderDef = new ServletHolder("default",
DefaultServlet.class); // what serves the static resources
holderDef.setInitParameter("dirAllowed","false");
handler.addServlet(holderDef,"/");
return handler;
On Wed, Jun 13, 2018 at 1:32 PM, Nathan Gough <
Post by Nathan GoughHi,
package jetty.demo;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.servlet.FilterHolder;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.util.resource.Resource;
import org.eclipse.jetty.util.resource.ResourceCollection;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.util.EnumSet;
public class EmbeddedDocsWebApp
{
public EmbeddedDocsWebApp() {
}
public static void main(String[] args)
{
System.setProperty("org.eclipse.jetty.LEVEL","DEBUG");
Server server = new Server();
ServerConnector connector = new ServerConnector(server);
connector.setPort(8181);
server.addConnector(connector);
String contextPath = "/all-docs";
jetty.demo.EmbeddedDocsWebApp webApp = new
jetty.demo.EmbeddedDocsWebApp();
ServletContextHandler context = webApp.createDocsWebApp(contex
tPath);
server.setHandler(context);
try
{
server.start();
server.dump(System.err);
server.join();
}
catch (Throwable t)
{
t.printStackTrace(System.err);
}
}
private ServletContextHandler createDocsWebApp(final String
contextPath) {
try {
final ResourceHandler resourceHandler = new
ResourceHandler();
resourceHandler.setDirectoriesListed(false);
final File codeDocsDir = new File("/tmp/code-docs");
final Resource codeDocsResource =
Resource.newResource(codeDocsDir);
// Load the component documentation working directory
final File userGuideDocsDir = new
File("/tmp/user-guide-docs");
final Resource userGuideDocsResource =
Resource.newResource(userGuideDocsDir);
// Create resources for three docs locations - User Guides,
Processor Docs, NiFi Web API
final ResourceCollection resources = new
ResourceCollection(codeDocsResource, userGuideDocsResource);
resourceHandler.setBaseResource(resources);
// Create the context handler
final ServletContextHandler handler = new
ServletContextHandler();
FilterHolder frameOptions = new
FilterHolder(FRAME_OPTIONS_FILTER);
frameOptions.setName("X-Frame-Options");
// <!-- This is the filter that does not get called when a
request is made to localhost:8181/all-docs -->
handler.addFilter(frameOptions, "/*",
EnumSet.allOf(DispatcherType.class));
handler.setContextPath(contextPath);
handler.insertHandler(resourceHandler);
System.out.println("Loading documents web app with context
path set to " + contextPath);
return handler;
} catch (Exception ex) {
System.out.println("Unhandled Exception in
createDocsWebApp: " + ex.getMessage());
return null; // required by compiler, though never be
executed.
}
}
private static final Filter FRAME_OPTIONS_FILTER = new Filter() {
private static final String FRAME_OPTIONS = "X-Frame-Options";
private static final String SAME_ORIGIN = "SAMEORIGIN";
@Override
public void doFilter(final ServletRequest req, final
ServletResponse resp, final FilterChain filterChain)
throws IOException, ServletException {
// set frame options accordingly
final HttpServletResponse response = (HttpServletResponse)
resp;
response.setHeader(FRAME_OPTIONS, SAME_ORIGIN);
filterChain.doFilter(req, resp);
}
@Override
public void init(final FilterConfig config) {
}
@Override
public void destroy() {
}
};
}
In this case, when hitting localhost:8181/all-docs, the ResourceHandler
returns the static resources but does not apply the X-Frame-Options header
using the FRAME_OPTIONS_FILTER. How do I get this target to hit the Filter
before handling the static resource request?
Thanks in advance.
On Fri, Jun 8, 2018 at 9:09 AM, Nathan Gough <
This Jetty doco page https://www.eclipse.org/j
etty/documentation/9.3.x/embedded-examples.html#embedded-spl
it-file-server shows how to set up two context handlers which serve
two different resource bases (eg. /var/www/docs and /var/www/api-docs) to
the same path (eg. myurl.com/documentation).
Serving static files from alternate path in embedded Jetty
<https://stackoverflow.com/questions/20207477/serving-static-files-from-alternate-path-in-embedded-jetty>.
You can add a Filter to a ServletContextHandler, but how do you add a
Filter to a ContextHandlerCollection? For example an X-Frame-Options
header? Is there a way to do split file/multiple resource bases for the
same target and also add a header using an embedded method?
Thanks!
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