be.fedict.eid.applet.service.PdfServlet.java Source code

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Here is the source code for be.fedict.eid.applet.service.PdfServlet.java

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/*
 * eID Applet Project.
 * Copyright (C) 2008-2009 FedICT.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version
 * 3.0 as published by the Free Software Foundation.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, see 
 * http://www.gnu.org/licenses/.
 */

package be.fedict.eid.applet.service;

import java.io.IOException;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

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

import be.fedict.eid.applet.service.impl.PdfGenerator;

import com.lowagie.text.DocumentException;

/**
 * Servlet that outputs the eID identity data from the HTTP session to a PDF.
 * Can be used by web applications in case they want to print-out the identity
 * information of a citizen.
 * 
 * @author Frank Cornelis
 * 
 */
public class PdfServlet extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final Log LOG = LogFactory.getLog(PdfServlet.class);

    private PdfGenerator pdfGenerator;

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        this.pdfGenerator = new PdfGenerator();
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        LOG.debug("doGet");

        HttpSession httpSession = request.getSession();
        EIdData eIdData = (EIdData) httpSession.getAttribute("eid");

        byte[] document;
        try {
            document = this.pdfGenerator.generatePdf(eIdData);
        } catch (DocumentException e) {
            throw new ServletException("PDF generator error: " + e.getMessage(), e);
        }

        response.setHeader("Expires", "0");
        response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
        response.setHeader("Pragma", "public");

        response.setContentType("application/pdf");
        response.setContentLength(document.length);
        ServletOutputStream out = response.getOutputStream();
        out.write(document);
        out.flush();
    }
}