exception

[mafyas]

he estado un poco liado, pongo el codigo para que se vea

Código:

<%@ page contentType="text/html;charset=UTF-8" %>
<%@ page import="org.apache.commons.lang.StringEscapeUtils" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://www.dspace.org/dspace-tags.tld" prefix="dspace" %>

<%
    boolean problem = (request.getParameter("feedback.problem") != null);
    String email = request.getParameter("email");

    if (email == null || email.equals(""))
    {
        email = (String) request.getAttribute("authenticated.email");
    }

    if (email == null)
    {
        email = "";
    }

    String feedback = request.getParameter("feedback");
    if (feedback == null)
    {
        feedback = "";
    }

    String fromPage = request.getParameter("fromPage");
    if (fromPage == null)
    {
        fromPage = "";
    }

    String code = request.getParameter ("code");
        if(!(code == null || code.equals("null"))){
            String originalCap=(String)session.getAttribute("captcha");
            String secHash = code;
            if(originalCap.equals(secHash)){
                request.getRequestDispatcher(request.getContextPath()+"/feedback").forward(request, response);
            }
         }


%>

<dspace:layout titlekey="jsp.feedback.form.title">
    <%-- <h1>Feedback Form</h1> --%>
    <h1><fmt:message key="jsp.feedback.form.title"/></h1>

    <%-- <p>Thanks for taking the time to share your feedback about the
    DSpace system. Your comments are appreciated!</p> --%>
    <p><fmt:message key="jsp.feedback.form.text1"/></p>

<%
    if (problem)
    {
%>
        <%-- <p><strong>Please fill out all of the information below.</strong></p> --%>
        <p><strong><fmt:message key="jsp.feedback.form.text2"/></strong></p>
<%
    }
%>

    <form action="form.jsp" method="post">
        <center>
            <table>
                <tr>
                    <td class="submitFormLabel"><label for="temail"><fmt:message key="jsp.feedback.form.email"/></label></td>
                    <td><input type="text" name="email" id="temail" size="50" value="<%=StringEscapeUtils.escapeHtml(email)%>" /></td>
                </tr>
                <tr>
                    <td class="submitFormLabel"><label for="tfeedback"><fmt:message key="jsp.feedback.form.comment"/></label></td>
                    <td><textarea name="feedback" id="tfeedback" rows="6" cols="50"><%=StringEscapeUtils.escapeHtml(feedback)%></textarea><br><br>
                        
                    </td>
                </tr>
                <tr>
                    <td>
                        <img alt="imagenCaptcha" src="cap3.jsp" id="captcha">
                        <input name="code" size="20" type="text"/>
                    </td>
                </tr>
                <tr>
                    <td colspan="2" align="center">
                    <input type="submit" name="submit" value="<fmt:message key="jsp.feedback.form.send"/>" />
                    </td>
                </tr>
            </table>
        </center>
    </form>

</dspace:layou