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copied!<p>BalusC's answer is the appropriate answer for small amounts of object data, however, the object I am submitting to the backing bean is 2.2 megabytes and not suitable for encoding in the URL. Further more I don't want people bookmarking this particular page as more attributes may be added to the search criteria file in the future and this would make the book mark properties invalid.</p> <p>The solution I am using is very low tech but it works. The applet submits the serialised object to the servlet, which in turn passes it to the backing bean, and then returns a fail or succeed message to the applet. If the submission succeeds then the applet calls a javascript function on the web page to load the results page. This ensures that the correct backing bean is retained.</p> <p>The final code is as follows:</p> <p>Applet "Submit Search Criteria" button code:</p> <pre><code>private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) { criteriaModel.loadCodeBase(); int choice = JOptionPane.showConfirmDialog(this, "Are you sure you want to submit your search criteria and exit the \"Customise Search Criteria\" web page?", "Confirm Submit", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE); if (choice == 0) { try { URL url = new URL(criteriaModel.getCodeBase(), "CriteriaServlet"); System.out.println("Servlet address is: " + url); Object searchSubmitObject = criteriaModel.getObjectSlideData(); HttpURLConnection connection = (HttpURLConnection)url.openConnection(); connection.setDoInput(true); connection.setDoOutput(true); connection.setUseCaches(false); connection.setRequestMethod("POST"); connection.setRequestProperty("Content-Type","application/x-java-serialized-object"); ObjectOutputStream out = new ObjectOutputStream(connection.getOutputStream()); out.writeObject(searchSubmitObject); out.flush(); out.close(); out.close(); System.out.println("Object Written"); ObjectInputStream in = new ObjectInputStream(connection.getInputStream()); String response = (String)in.readObject(); System.out.println(response); in.close(); if(response.equals("Failed")) { JOptionPane.showMessageDialog(jPanel8, "Submit Search criteria file to server failed.\n Try Again later."); } else { getAppletContext().showDocument(new URL("javascript:openResultsPage()")); } } catch (MalformedURLException ex) { JOptionPane.showMessageDialog(jPanel8, "Submit criteria file Malformed URL." + ex.toString()); System.out.println("MalformedURLException occurred"); Logger.getLogger(CriteriaInterfaceView.class.getName()).log(Level.SEVERE, null, ex); } catch (Exception e) { System.out.println("Submit criteria file ERROR exception: " + e.toString()); JOptionPane.showMessageDialog(jPanel8, "Submit criteria file ERROR exception:" + e.toString()); } } } </code></pre> <p>In the servlet:</p> <pre><code>@Override public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException { System.out.println("service(ServletRequest req, ServletResponse res)"); res.setContentType("text/plain"); try { ObjectInputStream in = new ObjectInputStream(req.getInputStream()); slideData = (MultipleSlideDataObject2)in.readObject(); in.close(); String reply = "Failed"; if(slideData != null) { System.out.println("Serial number of submitted slide series is: " + slideData.getSerialNumber()); FacesContext facesContext = FacesUtil.getFacesContext(req, res); ProductSelection productSelection = (ProductSelection) facesContext.getApplication().evaluateExpressionGet(facesContext, "#{productSelection}", ProductSelection.class); productSelection.submitSearchCriteriaFile(slideData); reply = "Success"; } ObjectOutputStream outputToApplet = new ObjectOutputStream(res.getOutputStream()); outputToApplet.writeObject(reply); outputToApplet.flush(); outputToApplet.close(); } catch (ClassNotFoundException ex) { Logger.getLogger(CriteriaServlet.class.getName()).log(Level.SEVERE, null, ex); } } </code></pre> <p>In the backing bean:</p> <pre><code>public String submitSearchCriteriaFile(MultipleSlideDataObject2 slideData) throws IOException { System.out.println("Recieved slide series with serial number: " + slideData.getSerialNumber()); // If there is no slide data then... if (slideData == null) { return "process_MainSearchResultFailed"; } else { rankProducts(slideData); } return "process_MainSearchResult"; } </code></pre> <p>In the header of the JSF page, which contains the applet:</p> <pre><code><SCRIPT language="javascript"> function openResultsPage() { window.location = "MainSearchResult.xhtml"; } </SCRIPT> </code></pre> <p>FacesUtil based on BalusC's FacesUtil class (couple of minor changes to the request and response types) Used to get the backing bean in the servlet:</p> <pre><code> package searchselection; import javax.faces.FactoryFinder; import javax.faces.component.UIViewRoot; import javax.faces.context.FacesContext; import javax.faces.context.FacesContextFactory; import javax.faces.lifecycle.Lifecycle; import javax.faces.lifecycle.LifecycleFactory; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; public class FacesUtil { // Getters ----------------------------------------------------------------------------------- public static FacesContext getFacesContext( ServletRequest request, ServletResponse response) { // Get current FacesContext. FacesContext facesContext = FacesContext.getCurrentInstance(); // Check current FacesContext. if (facesContext == null) { // Create new Lifecycle. LifecycleFactory lifecycleFactory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY); Lifecycle lifecycle = lifecycleFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE); // Create new FacesContext. FacesContextFactory contextFactory = (FacesContextFactory) FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY); facesContext = contextFactory.getFacesContext( request.getServletContext(), request, response, lifecycle); // Create new View. UIViewRoot view = facesContext.getApplication().getViewHandler().createView( facesContext, ""); facesContext.setViewRoot(view); // Set current FacesContext. FacesContextWrapper.setCurrentInstance(facesContext); } return facesContext; } // Helpers ----------------------------------------------------------------------------------- // Wrap the protected FacesContext.setCurrentInstance() in a inner class. private static abstract class FacesContextWrapper extends FacesContext { protected static void setCurrentInstance(FacesContext facesContext) { FacesContext.setCurrentInstance(facesContext); } } } </code></pre>

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