/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2025 Cloud Software Group, Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports 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 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 JasperReports. If not, see .
*/
package servlets;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import jakarta.servlet.ServletContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import datasource.WebappDataSource;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;
import net.sf.jasperreports.engine.export.HtmlExporter;
import net.sf.jasperreports.engine.util.JRLoader;
import net.sf.jasperreports.export.SimpleExporterInput;
import net.sf.jasperreports.export.SimpleHtmlExporterOutput;
import net.sf.jasperreports.jakarta.servlets.ImageServlet;
import net.sf.jasperreports.web.util.WebHtmlResourceHandler;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
*/
public class HtmlServlet extends HttpServlet
{
/**
*
*/
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
@Override
public void service(
HttpServletRequest request,
HttpServletResponse response
) throws IOException, ServletException
{
ServletContext context = this.getServletConfig().getServletContext();
response.setContentType("text/html");
PrintWriter out = response.getWriter();
try
{
File reportFile = new File(context.getRealPath("/reports/WebappReport.jasper"));
if (!reportFile.exists())
throw new JRRuntimeException("File WebappReport.jasper not found. The report design must be compiled first.");
JasperReport jasperReport = (JasperReport)JRLoader.loadObjectFromFile(reportFile.getPath());
Map parameters = new HashMap();
parameters.put("ReportTitle", "Address Report");
parameters.put("BaseDir", reportFile.getParentFile());
JasperPrint jasperPrint =
JasperFillManager.fillReport(
jasperReport,
parameters,
new WebappDataSource()
);
HtmlExporter exporter = new HtmlExporter();
request.getSession().setAttribute(ImageServlet.DEFAULT_JASPER_PRINT_SESSION_ATTRIBUTE, jasperPrint);
exporter.setExporterInput(new SimpleExporterInput(jasperPrint));
SimpleHtmlExporterOutput output = new SimpleHtmlExporterOutput(out);
output.setImageHandler(new WebHtmlResourceHandler("image?image={0}"));
exporter.setExporterOutput(output);
exporter.exportReport();
}
catch (JRException e)
{
out.println("");
out.println("");
out.println("JasperReports - Web Application Sample");
out.println("");
out.println("");
out.println("");
out.println("JasperReports encountered this error :");
out.println("