Obter valor de campo textfield JSP - Ajuda

/*
 * Page1.java
 *
 * Created on 23/05/2011, 13:56:31
 */
 
package prj_chat;

import com.sun.rave.web.ui.appbase.AbstractPageBean;
import javax.faces.FacesException;

/**
 * <p>Page bean that corresponds to a similarly named JSP page.  This
 * class contains component definitions (and initialization code) for
 * all components that you have defined on this page, as well as
 * lifecycle methods and event handlers where you may add behavior
 * to respond to incoming events.</p>
 *
 * @author João Gustavo Cabral
 */
public class Page1 extends AbstractPageBean {
    // <editor-fold defaultstate="collapsed" desc="Managed Component Definition">

    /**
     * <p>Automatically managed component initialization.  <strong>WARNING:</strong>
     * This method is automatically generated, so any user-specified code inserted
     * here is subject to being replaced.</p>
     */
    private void _init() throws Exception {
    }

    // </editor-fold>

    /**
     * <p>Construct a new Page bean instance.</p>
     */
    public Page1() {
    }

    /**
     * <p>Callback method that is called whenever a page is navigated to,
     * either directly via a URL, or indirectly via page navigation.
     * Customize this method to acquire resources that will be needed
     * for event handlers and lifecycle methods, whether or not this
     * page is performing post back processing.</p>
     * 
     * <p>Note that, if the current request is a postback, the property
     * values of the components do <strong>not</strong> represent any
     * values submitted with this request.  Instead, they represent the
     * property values that were saved for this view when it was rendered.</p>
     */
    public void init() {
        // Perform initializations inherited from our superclass
        super.init();
        // Perform application initialization that must complete
        // *before* managed components are initialized
        // TODO - add your own initialiation code here
        
        // <editor-fold defaultstate="collapsed" desc="Managed Component Initialization">
        // Initialize automatically managed components
        // *Note* - this logic should NOT be modified
        try {
            _init();
        } catch (Exception e) {
            log("Page1 Initialization Failure", e);
            throw e instanceof FacesException ? (FacesException) e: new FacesException(e);
        }
        
        // </editor-fold>
        // Perform application initialization that must complete
        // *after* managed components are initialized
        // TODO - add your own initialization code here
    }

    /**
     * <p>Callback method that is called after the component tree has been
     * restored, but before any event processing takes place.  This method
     * will <strong>only</strong> be called on a postback request that
     * is processing a form submit.  Customize this method to allocate
     * resources that will be required in your event handlers.</p>
     */
    public void preprocess() {
    }

    /**
     * <p>Callback method that is called just before rendering takes place.
     * This method will <strong>only</strong> be called for the page that
     * will actually be rendered (and not, for example, on a page that
     * handled a postback and then navigated to a different page).  Customize
     * this method to allocate resources that will be required for rendering
     * this page.</p>
     */
    public void prerender() {
         String username = (String)getExternalContext().getRequestParameterMap().get("username");
        if (username != null) {
            getSessionBean1().setUsername(username);
        }
        else if (getSessionBean1().getUsername() == null) {
            getSessionBean1().setUsername(getApplicationBean1().getNextAnonUsername());
        }
    }

    /**
     * <p>Callback method that is called after rendering is completed for
     * this request, if <code>init()</code> was called (regardless of whether
     * or not this was the page that was actually rendered).  Customize this
     * method to release resources acquired in the <code>init()</code>,
     * <code>preprocess()</code>, or <code>prerender()</code> methods (or
     * acquired during execution of an event handler).</p>
     */
    public void destroy() {
    }
    
    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected SessionBean1 getSessionBean1() {
        return (SessionBean1) getBean("SessionBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected RequestBean1 getRequestBean1() {
        return (RequestBean1) getBean("RequestBean1");
    }

    /**
     * <p>Return a reference to the scoped data bean.</p>
     *
     * @return reference to the scoped data bean
     */
    protected ApplicationBean1 getApplicationBean1() {
        return (ApplicationBean1) getBean("ApplicationBean1");
    }
 public String getTranscript() {
        String[][] entries = 
            getApplicationBean1().getEntries();
        if (entries == null) {
            return null;
        }
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < entries.length; i++) {
            String entryUsername = entries[i][0];
            String comment = entries[i][1];
            String color = "purple";
            String username = getSessionBean1().getUsername();
            if (username.equals(entryUsername)) {
                color = "blue";
            }
            sb.append(
                "<div><span style=\"font-weight:bold;color:");
            sb.append(color);
            sb.append("\">[");
            sb.append(entryUsername);
            sb.append("]</span> ");
            sb.append(comment);
            sb.append("</div>");
        }
        return sb.toString();
    }

    public String send_action() {
// PRECISO COLETAR O CONTEUDO DO TEXTFIELD, PARA ENVIAR AO METODO ADDENTRY
     String comment = (String)getComment().getText();
      String username = getSessionBean1().getUsername();
     getApplicationBean1().addEntry(username, comment);
      return null;
    }


   
}

<?xml version="1.0" encoding="UTF-8"?>
<!-- 
    Document   : Page1
    Created on : 23/05/2011, 13:56:31
    Author     : João Gustavo Cabral
-->
<jsp:root version="1.2" xmlns:df="http://java.sun.com/jsf/dynamicfaces" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"
    xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:ui="http://www.sun.com/web/ui">
    <jsp:directive.page contentType="text/html;charset=UTF-8" pageEncoding="UTF-8"/>
    <f:view>
        <ui:page id="page1">
            <ui:html id="html1">
                <ui:head id="head1">
                    <ui:link id="link1" url="/resources/stylesheet.css"/>
                    <df:ajaxTransaction id="commentTx" inputs="page1:html1:body1:form1:send,page1:html1:body1:form1:comment"
                        postReplace="customPostReplaceForCommentTx" render="page1:html1:body1:form1:transcriptPanel:transcriptText"/>
                    <df:ajaxTransaction id="pollTx" inputs="" postReplace="customPostReplaceForPollTx"
                        render="page1:html1:body1:form1:transcriptPanel:transcriptText" replaceElement="customReplaceForPollTx"/>
                </ui:head>
                <ui:body id="body1" onLoad="handleOnLoad()" onUnload="handleOnUnload()" style="-rave-layout: grid">
                    <ui:form id="form1" onSubmit="interceptFormSubmit()">
                        <ui:panelLayout id="transcriptPanel" panelLayout="flow" style="height: 286px; left: 48px; top: 24px; position: absolute; width: 454px;overflow: auto; border: 2px solid black;">
                            <ui:staticText escape="false" id="transcriptText" text="#{Page1.transcript}"/>
                        </ui:panelLayout>
                        <ui:textField columns="60" id="comment" style="left: 48px; top: 336px; position: absolute; width: 504px"/>
                        <ui:button action="#{Page1.send_action}" id="send" style="left: 575px; top: 336px; position: absolute; width: 70px" text="Enviar"/>
                        <br/>
                    </ui:form>
                </ui:body>
            </ui:html>
        </ui:page>
    </f:view>
</jsp:root>