com.autentia.tnt.filter.UTF8Filter.java Source code

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Here is the source code for com.autentia.tnt.filter.UTF8Filter.java

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/**
 * TNTConcept Easy Enterprise Management by Autentia Real Bussiness Solution S.L.
 * Copyright (C) 2007 Autentia Real Bussiness Solution S.L.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.autentia.tnt.filter;

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 org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *
 * Filtro para que la aplicacin acepte codificacin en formato UTF-8
 *
 */

public class UTF8Filter implements Filter {
    private static final Log log = LogFactory.getLog(UTF8Filter.class);

    private String encoding;
    private String contentType;

    /**
     * Recogemos el tipo de codificacin definido en el web.xml Si no se hubiera
     * especificado ninguno se toma "UTF-8" por defecto
     */

    public void init(FilterConfig cfg) throws ServletException {
        encoding = cfg.getInitParameter("requestEncoding");
        if (encoding == null) {
            encoding = "UTF-8";
        }
        contentType = "text/html; charset=" + encoding;

        log.warn("init - forcing content type to '" + contentType
                + "' for resources filtered by UTF8Filter (see web.xml)");
    }

    /**
     * Metemos en la request el formato de codificacion UTF-8
     */
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain fc)
            throws IOException, ServletException {
        response.setContentType(contentType);
        request.setCharacterEncoding(encoding);
        fc.doFilter(request, response);
    }

    public void destroy() {
    }

}