На JSP-странице после обновления появляются ?????

/*
 * Created on 30.04.2003
 * 
 * @author  <a href='mailto:maxim.ragozin@entente-llc.com'>Maxim Ragozin</a>
 *
 * $Id: SelectLanguageFilter.java,v 1.28 2003/07/22 12:37:05 maxim Exp $
 * @version $Revision: 1.28 $
 */
package com.cards2connect.war.filter;
 
import java.io.IOException;
import java.rmi.RemoteException;
 
import javax.ejb.ObjectNotFoundException;
import javax.ejb.RemoveException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import com.ragozin.icards.ejb.RegionManagementSession;
import com.ragozin.icards.war.util.HttpUtil;
 
/**
 * @version $Revision: 1.28 $
 * @author  <a href='mailto:maxim.ragozin@entente-llc.com'>Maxim Ragozin</a>
 *
 * @web.filter
 *     name = 'SelectLanguageFilter'
 * 
 * @web.filter-mapping 
 *      url-pattern='/exec/*'
 * @web.filter-mapping 
 *      url-pattern='/'
 */
public class SelectLanguageFilter implements Filter {
 
    static private org.apache.log4j.Logger log = org.apache.log4j.Logger.getLogger(SelectLanguageFilter.class);
 
    /** LOCAL CONSTANTS
     */
    static final String REQUEST_LANGUAGE = 'lang';
    static final String SESSION_LANGUAGE = 'com.cards2connect.langId';
    static final String COOKIE_LANGUAGE = 'l';
 
    /* 
     * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
     */
    public void init(FilterConfig arg0) throws ServletException {
    }
 
    /* (non-Javadoc)
     * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
     */
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain filterChain) throws IOException, ServletException {
        log.debug('doFilter() : start');
        try {
            if (!(req instanceof HttpServletRequest)) {
                log.debug('doFilter() : end. request is not HttpServletRequest');
                return;
            }
            if (!(res instanceof HttpServletResponse)) {
                log.debug('doFilter() : end. request is not HttpServletResponse');
                return;
            }
            //
            HttpServletRequest request = (HttpServletRequest) req;
            HttpServletResponse response = (HttpServletResponse) res;
            //
            if (!request.getRequestURI().startsWith('/exec/')) {
                if (!request.getRequestURI().equals('/')) {
                    if (!request.getRequestURI().startsWith('/;jsessionid=')) {
                        if (log.isDebugEnabled()) {
                            log.debug('doFilter() : end. request URI '' + request.getRequestURI() + '' is not '/' and doesn't start with '/exec/'');
                        }
                        return;
                    }
                }
            }
            //
            doSelectLanguage(request, response);
            //
            if (log.isDebugEnabled()) {
                log.debug('doFilter() : end.');
            }
        } finally {
            filterChain.doFilter(req, res);
        }
    }
 
    static public void doSelectLanguage(HttpServletRequest request, HttpServletResponse response) throws ServletException {
        log.debug('doSelectLanguage() : start');
        //
        if (request.getAttribute(REQUEST_LANGUAGE) != null) {
            log.debug('doSelectLanguage() : end. 2nd call');
            return;
        }
        
        //
        try {
            request.setCharacterEncoding('UTF-8');<BR   ee javax.servlet.Filter#destroy()
     */
    public void destroy() {
    }
 
    /**
     *
     */
    static public RegionManagementSession getRegionManagementSession() throws javax.servlet.ServletException {
        try {
            return com.ragozin.icards.ejb.RegionManagementSessionUtil.getHome().create();
        } catch (javax.naming.NamingException e) {
            throw new javax.servlet.ServletException(e);
        } catch (javax.ejb.CreateException e) {
            throw new javax.servlet.ServletException(e);
        } catch (java.rmi.RemoteException e) {
            throw new javax.servlet.ServletException(e);
        }
    }
}

package filters;
 
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.UnavailableException;
 
public class SetCharacterEncodingFilter implements Filter {
 
    /**
     * The default character encoding to set for requests that pass through
     * this filter.
     */
    protected String encoding = null;
 
    /**
     * The filter configuration object we are associated with.  If this value
     * is null, this filter instance is not currently configured.
     */
    protected FilterConfig filterConfig = null;
 
    /**
     * Should a character encoding specified by the client be ignored?
     */
    protected boolean ignore = true;
 
    /**
     * Take this filter out of service.
     */
    public void destroy() {
 
        this.encoding = null;
        this.filterConfig = null;
 
    }
 
    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain)
    throws IOException, ServletException {
 
        // Conditionally select and set the character encoding to be used
        if (ignore || (request.getCharacterEncoding() == null)) {
            String encoding = selectEncoding(request);
            if (encoding != null)
                request.setCharacterEncoding(encoding);
        }
 
    // Pass control on to the next filter
        chain.doFilter(request, response);
 
    }
 
    /**
     * Place this filter into service.
     *
     * @param filterConfig The filter configuration object
     */
    public void init(FilterConfig filterConfig) throws ServletException {
 
    this.filterConfig = filterConfig;
        this.encoding = filterConfig.getInitParameter('encoding');
        String value = filterConfig.getInitParameter('ignore');
        if (value == null)
            this.ignore = true;
        else if (value.equalsIgnoreCase('true'))
            this.ignore = true;
        else if (value.equalsIgnoreCase('yes'))
            this.ignore = true;
        else
            this.ignore = false;
 
    }
 
    /**
     * Select an appropriate character encoding to be used, based on the
     * characteristics of the current request and/or filter initialization
     * parameters.  If no character encoding should be set, return
     * <code>null</code>.
     * <p>
     * The default implementation unconditionally returns the value configured
     * by the <strong>encoding</strong> initialization parameter for this
     * filter.
     *
     * @param request The servlet request we are processing
     */
    protected String selectEncoding(ServletRequest request) {
 
        return (this.encoding);
 
    }
 
}