A better way to integrate Guice and Resteasy

GuiceResteasyFilterDispatcher.java

package com.example;

import com.google.inject.Injector;
import org.jboss.resteasy.plugins.guice.ModuleProcessor;
import org.jboss.resteasy.plugins.server.servlet.FilterDispatcher;
import org.jboss.resteasy.spi.Registry;
import org.jboss.resteasy.spi.ResteasyProviderFactory;
import javax.inject.Inject;
import javax.inject.Singleton;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;


/**
 * Use this instead of the Resteasy FilterDispatcher and it will be properly integrated with Guice.
 * The normal Resteasy Guice integration via servlet context listener is not the "guice way".
 *
 * Note that you must map this filter in Guice so that it gets proper injection.
 *
 * @author Jeff Schnitzer
 */
@Singleton
public class GuiceResteasyFilterDispatcher extends FilterDispatcher
{
	private Injector injector;

	@Inject
	public GuiceResteasyFilterDispatcher(Injector injector) {
		this.injector = injector;
	}

	/**
	 * Also initializes all Guice bindings for
	 */
	@Override
	public void init(FilterConfig cfg) throws ServletException {
		super.init(cfg);

		final ServletContext context = cfg.getServletContext();
		final Registry registry = (Registry) context.getAttribute(Registry.class.getName());
		final ResteasyProviderFactory providerFactory = (ResteasyProviderFactory) context.getAttribute(ResteasyProviderFactory.class.getName());
		final ModuleProcessor processor = new ModuleProcessor(registry, providerFactory);

		processor.processInjector(injector);
	}
}

Hi, could provide and example of your integration? Because your example seems very interresting but I didn't succeed to use it in my application, I had a NullPointerException on "processor.processInjector(injector);".
I can provide you my source code if you are willing to help.
Thanks in advance !

By a nice french intern who's quite lost and unhelped by the company he is working with

Can you describe why its better too?
Perhaps we can submit it to be fixed then.

Is there a reason to not to use the getDispatcher()?

Registry registry = getDispatcher().getRegistry();
ResteasyProviderFactory providerFactory = getDispatcher().getProviderFactory();

Now, we need to pass a init parameter to work right.

bind(GuiceResteasyFilterDispatcher.class);
filter("/*").through(GuiceResteasyFilterDispatcher.class, values(new String[]{"resteasy.servlet.context.deployment","true"}));