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/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2011 Jaspersoft Corporation. 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 net.sf.jasperreports.web.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JRParameter;
import net.sf.jasperreports.engine.JRPropertiesUtil;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.ReportContext;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;
import net.sf.jasperreports.engine.export.JRXhtmlExporter;
import net.sf.jasperreports.web.JRInteractiveException;
import net.sf.jasperreports.web.WebReportContext;
import net.sf.jasperreports.web.actions.AbstractAction;
import net.sf.jasperreports.web.actions.Action;
import net.sf.jasperreports.web.actions.MultiAction;
import net.sf.jasperreports.web.util.JacksonUtil;
import net.sf.jasperreports.web.util.ReportExecutionHyperlinkProducerFactory;
import net.sf.jasperreports.web.util.VelocityUtil;
import net.sf.jasperreports.web.util.WebUtil;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* @author Teodor Danciu ([email protected])
* @version $Id: ReportServlet.java 5378 2012-05-14 00:39:27Z teodord $
*/
public class ReportServlet extends AbstractServlet
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private static final Log log = LogFactory.getLog(ReportServlet.class);
private static final String TEMPLATE_HEADER= "net/sf/jasperreports/web/servlets/resources/templates/HeaderTemplate.vm";
private static final String TEMPLATE_BETWEEN_PAGES= "net/sf/jasperreports/web/servlets/resources/templates/BetweenPagesTemplate.vm";
private static final String TEMPLATE_FOOTER= "net/sf/jasperreports/web/servlets/resources/templates/FooterTemplate.vm";
private static final String TEMPLATE_HEADER_NOPAGES = "net/sf/jasperreports/web/servlets/resources/templates/HeaderTemplateNoPages.vm";
private static final String TEMPLATE_FOOTER_NOPAGES = "net/sf/jasperreports/web/servlets/resources/templates/FooterTemplateNoPages.vm";
private static final String REQUEST_PARAMETER_IGNORE_PAGINATION = "jr.ignrpg";
private static final String REQUEST_PARAMETER_ACTION = "jr.action";
private static final String REQUEST_PARAMETER_PAGE = "jr.page";
private static final String REQUEST_PARAMETER_PAGE_TIMESTAMP = "jr.pagetimestamp";
/**
*
*/
public void service(
HttpServletRequest request,
HttpServletResponse response
) throws IOException, ServletException
{
response.setContentType("text/html; charset=UTF-8");
// Set to expire far in the past.
response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
// Set IE extended HTTP/1.1 no-cache headers (use addHeader).
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
PrintWriter out = response.getWriter();
WebReportContext webReportContext = WebReportContext.getInstance(request);
try
{
runReport(request, webReportContext);
render(request, webReportContext, out);
}
catch (JRInteractiveException e)
{
log.error("Jasper Interactive error", e);
out.println("
");
out.println(e.getMessage());
out.println("
");
}
catch (Exception e)
{
log.error("Error on report execution", e);
out.println("");//FIXMEJIVE do we need to render this? or should this be done by the viewer?
out.println("");
out.println("JasperReports - Web Application Sample");
out.println("");
out.println("");
out.println("JasperReports encountered this error :");
out.println("
");
e.printStackTrace(out);
out.println("
");
out.println("");
out.println("");
}
}
/**
* @throws JRInteractiveException
*
*/
public void runReport(
HttpServletRequest request, //FIXMEJIVE put request in report context, maybe as a thread local?
WebReportContext webReportContext
) throws JRException, JRInteractiveException //IOException, ServletException
{
JasperPrintAccessor jasperPrintAccessor =
(JasperPrintAccessor) webReportContext.getParameterValue(
WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR
);
JRPropertiesUtil propUtil = JRPropertiesUtil.getInstance(getJasperReportsContext());
String runReportParamName = propUtil.getProperty(WebUtil.PROPERTY_REQUEST_PARAMETER_RUN_REPORT);
String runReport = request.getParameter(runReportParamName);
if (jasperPrintAccessor == null || Boolean.valueOf(runReport))
{
String reportUriParamName = propUtil.getProperty(WebUtil.PROPERTY_REQUEST_PARAMETER_REPORT_URI);
String reportUri = request.getParameter(reportUriParamName);
if (reportUri != null)
{
webReportContext.setParameterValue(reportUriParamName, reportUri);
}
Boolean isIgnorePagination = Boolean.valueOf(request.getParameter(REQUEST_PARAMETER_IGNORE_PAGINATION));
if (isIgnorePagination != null)
{
webReportContext.setParameterValue(JRParameter.IS_IGNORE_PAGINATION, isIgnorePagination);
}
String asyncParamName = propUtil.getProperty(WebUtil.PROPERTY_REQUEST_PARAMETER_ASYNC_REPORT);
String async = request.getParameter(asyncParamName);
if (async != null)
{
webReportContext.setParameterValue(asyncParamName, Boolean.valueOf(async));
}
Action action = getAction(webReportContext, WebUtil.decodeUrl(request.getParameter(REQUEST_PARAMETER_ACTION)));
Controller controller = new Controller(getJasperReportsContext());
controller.runReport(webReportContext, action);
}
}
/**
*
*/
public void render(
HttpServletRequest request,
WebReportContext webReportContext,
PrintWriter writer
) throws JRException //IOException, ServletException
{
JasperPrintAccessor jasperPrintAccessor = (JasperPrintAccessor) webReportContext.getParameterValue(
WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR);
ReportExecutionStatus reportStatus = jasperPrintAccessor.getReportStatus();
if (reportStatus.getStatus() == ReportExecutionStatus.Status.ERROR)
{
throw new JRRuntimeException("Error occurred during report generation", reportStatus.getError());
}
//Integer pageCount = reportStatus.getTotalPageCount();
// if the page count is null, it means that the fill is not yet done but there is at least a page
//boolean hasPages = pageCount == null || pageCount > 0;//FIXMEJIVE we should call pageStatus here
boolean hasPages = jasperPrintAccessor.pageStatus(0, null).pageExists();
JRXhtmlExporter exporter = new JRXhtmlExporter(getJasperReportsContext());
ReportPageStatus pageStatus;
if (hasPages)
{
String reportPage = request.getParameter(REQUEST_PARAMETER_PAGE);
int pageIdx = reportPage == null ? 0 : Integer.parseInt(reportPage);
String pageTimestamp = request.getParameter(REQUEST_PARAMETER_PAGE_TIMESTAMP);
Long timestamp = pageTimestamp == null ? null : Long.valueOf(pageTimestamp);
pageStatus = jasperPrintAccessor.pageStatus(pageIdx, timestamp);
if (!pageStatus.pageExists())
{
throw new JRRuntimeException("Page " + pageIdx + " not found in report");
}
exporter.setParameter(JRExporterParameter.PAGE_INDEX, pageIdx);
}
else
{
pageStatus = ReportPageStatus.PAGE_FINAL;
}
exporter.setReportContext(webReportContext);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrintAccessor.getJasperPrint());
exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, writer);
exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI, "image?" + WebReportContext.REQUEST_PARAMETER_REPORT_CONTEXT_ID + "=" + webReportContext.getId() + "&image=");
exporter.setParameter(JRHtmlExporterParameter.HTML_HEADER, getHeader(request, webReportContext, hasPages, pageStatus));
exporter.setParameter(JRHtmlExporterParameter.BETWEEN_PAGES_HTML, getBetweenPages(request, webReportContext));
exporter.setParameter(JRHtmlExporterParameter.HTML_FOOTER, getFooter(request, webReportContext, hasPages, pageStatus));
exporter.setParameter(
JRHtmlExporterParameter.HYPERLINK_PRODUCER_FACTORY,
ReportExecutionHyperlinkProducerFactory.getInstance(getJasperReportsContext(), request)
);
//TODO lucianc do not export if the page has not modified
exporter.exportReport();
}
/**
*
*/
protected String getHeader(HttpServletRequest request, WebReportContext webReportContext, boolean hasPages,
ReportPageStatus pageStatus)
{
Map contextMap = new HashMap();
JasperPrintAccessor jasperPrintAccessor = (JasperPrintAccessor) webReportContext.getParameterValue(
WebReportContext.REPORT_CONTEXT_PARAMETER_JASPER_PRINT_ACCESSOR);
contextMap.put("totalPages", jasperPrintAccessor.getReportStatus().getTotalPageCount());
String reportPage = request.getParameter(REQUEST_PARAMETER_PAGE);
contextMap.put("currentPage", (reportPage != null ? reportPage : "0"));
if (!pageStatus.isPageFinal())
{
contextMap.put("pageTimestamp", String.valueOf(pageStatus.getTimestamp()));
}
if (hasPages)
{
return VelocityUtil.processTemplate(TEMPLATE_HEADER, contextMap);
} else
{
return VelocityUtil.processTemplate(TEMPLATE_HEADER_NOPAGES, contextMap);
}
}
/**
*
*/
protected String getBetweenPages(HttpServletRequest request, WebReportContext webReportContext)
{
return VelocityUtil.processTemplate(TEMPLATE_BETWEEN_PAGES, new HashMap());
}
/**
*
*/
protected String getFooter(HttpServletRequest request, WebReportContext webReportContext, boolean hasPages,
ReportPageStatus pageStatus)
{
Map contextMap = new HashMap();
if (hasPages) {
return VelocityUtil.processTemplate(TEMPLATE_FOOTER, contextMap);
} else
{
return VelocityUtil.processTemplate(TEMPLATE_FOOTER_NOPAGES, contextMap);
}
}
/**
*
*/
private Action getAction(ReportContext webReportContext, String jsonData)
{
Action result = null;
List actions = JacksonUtil.getInstance(getJasperReportsContext()).loadAsList(jsonData, AbstractAction.class);
if (actions != null)
{
if (actions.size() == 1) {
result = actions.get(0);
} else if (actions.size() > 1){
result = new MultiAction(actions);
}
((AbstractAction)result).init(getJasperReportsContext(), webReportContext);
}
return result;
}
}
