SWF-1366 Add RequestHandler for JSF resource requests and update sample config

spring-faces/src/main/java/org/springframework/faces/webflow/FacesJsfResourceRequestHandler.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2004-2010 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.faces.webflow;
+
+import java.io.IOException;
+
+import javax.faces.FactoryFinder;
+import javax.faces.application.ResourceHandler;
+import javax.faces.context.FacesContext;
+import javax.faces.context.FacesContextFactory;
+import javax.faces.lifecycle.Lifecycle;
+import javax.faces.lifecycle.LifecycleFactory;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.web.HttpRequestHandler;
+import org.springframework.web.context.support.WebApplicationObjectSupport;
+
+/**
+ * Handles a request by delegating to the JSF ResourceHandler, which serves web application and classpath resources such
+ * as images, CSS and JavaScript files from well-known locations.
+ * 
+ * @since 2.2.0
+ * @author Rossen Stoyanchev
+ * @see ResourceHandler
+ */
+public class FacesJsfResourceRequestHandler extends WebApplicationObjectSupport implements HttpRequestHandler {
+
+	public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException,
+			IOException {
+		FacesContext context = getFacesContext(request, response);
+		ResourceHandler resourceHandler = context.getApplication().getResourceHandler();
+		resourceHandler.handleResourceRequest(context);
+	}
+
+	private FacesContext getFacesContext(HttpServletRequest request, HttpServletResponse response) {
+		FacesContextFactory facesContextFactory = (FacesContextFactory) FactoryFinder
+				.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
+		LifecycleFactory lifecycleFactory = (LifecycleFactory) FactoryFinder
+				.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
+		Lifecycle lifecycle = lifecycleFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE);
+		return facesContextFactory.getFacesContext(getServletContext(), request, response, lifecycle);
+	}
+
+}