pdfservlet.java

来自「tomcat最新安装程序」· Java 代码 · 共 172 行

/*
 * ============================================================================
 *                   The JasperReports License, Version 1.0
 * ============================================================================
 * 
 * Copyright (C) 2001-2003 Teodor Danciu ([e-mail]). All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * 3. The end-user documentation included with the redistribution, if any, must
 *    include the following acknowledgment: "This product includes software
 *    developed by Teodor Danciu (http://jasperreports.sourceforge.net)."
 *    Alternately, this acknowledgment may appear in the software itself, if
 *    and wherever such third-party acknowledgments normally appear.
 * 
 * 4. The name "JasperReports" must not be used to endorse or promote products 
 *    derived from this software without prior written permission. For written 
 *    permission, please contact [e-mail].
 * 
 * 5. Products derived from this software may not be called "JasperReports", nor 
 *    may "JasperReports" appear in their name, without prior written permission
 *    of Teodor Danciu.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL  THE
 * APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLU-
 * DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND ON
 * ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR TORT
 * (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * ============================================================================
 *                   GNU Lesser General Public License
 * ============================================================================
 *
 * JasperReports - Free Java report-generating library.
 * Copyright (C) 2001-2003 Teodor Danciu [e-mail]
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
 * 
 * Teodor Danciu
 * 173, Calea Calarasilor, Bl. 42, Sc. 1, Ap. 18
 * Postal code 741181, Sector 3
 * Bucharest, ROMANIA
 * Email: [e-mail]
 */
package servlets;

import datasource.*;
import dori.jasper.engine.*;

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;


/**
 *
 */
public class PdfServlet extends HttpServlet
{


	/**
	 *
	 */
	public void service(
		HttpServletRequest request,
		HttpServletResponse response
		) throws IOException, ServletException
	{
		ServletContext context = this.getServletConfig().getServletContext();

		File reportFile = new File(context.getRealPath("/reports/WebappReport.jasper"));
	
		Map parameters = new HashMap();
		parameters.put("ReportTitle", " Report");
		parameters.put("BaseDir", reportFile.getParentFile());
					
		byte[] bytes = null;

		try
		{
			bytes = 
				JasperRunManager.runReportToPdf(
					reportFile.getPath(), 
					parameters, 
					new WebappDataSource()
					);
		}
		catch (JRException e)
		{
			response.setContentType("text/html");
			PrintWriter out = response.getWriter();
			out.println("<html>");
			out.println("<head>");
			out.println("<title>JasperReports - Web Application Sample</title>");
			out.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"../stylesheet.css\" title=\"Style\">");
			out.println("</head>");
			
			out.println("<body bgcolor=\"white\">");

			out.println("<span class=\"bnew\">JasperReports encountered this error :</span>");
			out.println("<pre>");

			e.printStackTrace(out);

			out.println("</pre>");

			out.println("</body>");
			out.println("</html>");

			return;
		}

		if (bytes != null && bytes.length > 0)
		{
			response.setContentType("application/pdf");
			response.setContentLength(bytes.length);
			ServletOutputStream ouputStream = response.getOutputStream();
			ouputStream.write(bytes, 0, bytes.length);
			ouputStream.flush();
			ouputStream.close();
		}
		else
		{
			response.setContentType("text/html");
			PrintWriter out = response.getWriter();
			out.println("<html>");
			out.println("<head>");
			out.println("<title>JasperReports - Web Application Sample</title>");
			out.println("<link rel=\"stylesheet\" type=\"text/css\" href=\"../stylesheet.css\" title=\"Style\">");
			out.println("</head>");
			
			out.println("<body bgcolor=\"white\">");
	
			out.println("<span class=\"bold\">Empty response.</span>");
	
			out.println("</body>");
			out.println("</html>");
		}
	}


}