Jasper applet viewer

[valentim]

I folks,

I have followed this conversation http://forum.springframework.org/vie...ghlight=jasper to some time, and would like to contribute of any form.

I tired to try to understand because the JasperReports present different layouts when presenting reports in HTML for different browsers. I tried to use the Acrobat Reader to facilitate this, but many customers had not liked the idea and at some moments the report was not presented. Then I saw that the version 0.6.4 I could use an applet to present the report.

I studed the idea and see that the applet needed a JasperPrint serialized in the reponse stream and the Spring solution at the moment don't support it.

Finally I make an public class JasperReportsPrintView extends AbstractJasperReportsSingleFormatView to solve this, and I would like to share the idea with yours.

package ...presentation.web.support.springframework;

import java.io.ObjectOutputStream;
import java.util.Map;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JRAbstractExporter;
import net.sf.jasperreports.engine.JRDataSource;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;

import org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsSingleFormatView;

public class JasperReportsPrintView extends
		AbstractJasperReportsSingleFormatView {

	/**
	 * Default Constructor
	 */
	public JasperReportsPrintView() {
		setContentType("application/octet-stream");
	}

	/**
	 * Perform rendering for a single Jasper Reports exporter,
	 * i.e. a pre-defined output format.
	 */
	protected void renderReport(
			JasperReport report, Map parameters, JRDataSource dataSource, HttpServletResponse response)
			throws Exception {

		JasperPrint jasperPrint = JasperFillManager.fillReport(report, parameters, dataSource);

		ServletOutputStream ouputStream = response.getOutputStream();
			
		ObjectOutputStream oos = new ObjectOutputStream(ouputStream);
		oos.writeObject(jasperPrint);
		oos.flush();
		oos.close();

		ouputStream.flush();
		ouputStream.close();
	}

	/**
	 * @see org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsSingleFormatView#createExporter()
	 */
	protected JRAbstractExporter createExporter() {
		return null;
	}

	/**
	 * @see org.springframework.web.servlet.view.jasperreports.AbstractJasperReportsSingleFormatView#useWriter()
	 */
	protected boolean useWriter() {
		return false;
	}

}

and for a context overview

1) The servlet report config:

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http&#58;//www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean id="reportController"
        class="...reportController"
        autowire="byName">
        <property name="facade">
            <ref bean="businessDelegate" />
        </property>
    </bean>
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="**/report.jasper">reportController</prop>
            </props>
        </property>
    </bean>
    <bean id="jasperReportsViewResolver" class="org.springframework.web.servlet.view.ResourceBundleViewResolver">
        <property name="basename">
            <value>jasper</value>
        </property>
    </bean>
</beans>

The jasper.propeties file:

##############################
# JasperReports View Classes
##############################
# org.springframework.web.servlet.view.jasperreports.JasperReportsCsvView
# org.springframework.web.servlet.view.jasperreports.JasperReportsHtmlView
# org.springframework.web.servlet.view.jasperreports.JasperReportsPdfView
# org.springframework.web.servlet.view.jasperreports.JasperReportsXlsView

################
# Reports
################
report.class=...presentation.web.support.springframework.JasperReportsPrintView
report.url=/WEB-INF/reports/Report.jrxml
report.reportDataKey=reportData

The report Controller class:

package ...presentation.web.classes.owner.report;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

import ...facade.BusinessDelegate;
import ...presentation.web.support.WebSupportUtils;
import ...presentation.web.support.jasper.JRHibernateQueryResultDataSource;

public class ReportController implements Controller  {

    protected BusinessDelegate facade;

    /**
     *
     * @param facade BusinessDelegate
     */
    public void setFacade(BusinessDelegate facade) {
        this.facade = facade;
    }

    /**
     *
     * @param request HttpServletRequest
     * @param response HttpServletResponse
     * @throws Exception
     * @return ModelAndView
     */
    public ModelAndView handleRequest(HttpServletRequest request,
                                      HttpServletResponse response) throws Exception {

        Collection dataSource = facade.ownerReport(
             WebSupportUtils.getAuthenticatedOwner(request.getSession(), true));

        String[] fields = new String[] {"field1",
                                        "field2",
                                        "field3",
                                        "field4",
                                        "field5",
                                        "field6",
                                        "field7"};

        Map model = new HashMap();
        ServletContext context = request.getSession().getServletContext();

        model.put("framesup_img01", context.getRealPath("imagens/framesup_img01.jpg"));
        model.put("framesup_img02", context.getRealPath("imagens/framesup_img02.jpg"));
        model.put("framesup_img03", context.getRealPath("imagens/framesup_img03.jpg"));
        model.put("reportData", new JRHibernateQueryResultDataSource(dataSource, fields));

        return new ModelAndView("report", model);
    }
}

The EmbeddedViewerApplet class:

/*
 * ============================================================================
 *                   The JasperReports License, Version 1.0
 * ============================================================================
 * 
 * Copyright (C) 2001-2004 Teodor Danciu (teodord@users.sourceforge.net). 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 teodord@users.sourceforge.net.
 * 
 * 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) 2001-2004 Teodor Danciu teodord@users.sourceforge.net
 * 
 * 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 030615, Sector 3
 * Bucharest, ROMANIA
 * Email: teodord@users.sourceforge.net
 */
import net.sf.jasperreports.engine.*;
import net.sf.jasperreports.engine.util.*;
import net.sf.jasperreports.view.*;

import java.io.*;
import java.net.*;
import java.awt.BorderLayout;
import javax.swing.JOptionPane;


/**
 * @author Teodor Danciu (teodord@users.sourceforge.net)
 * @version $Id: EmbeddedViewerApplet.java,v 1.4 2004/06/01 20:46:04 teodord Exp $
 */
public class EmbeddedViewerApplet extends javax.swing.JApplet
{


	/**
	 *
	 */
	private JasperPrint jasperPrint = null;


	/** Creates new form AppletViewer */
	public EmbeddedViewerApplet()
	{
		initComponents();
	}


	/**
	*
	*/
	public void init()
	{
		String url = getParameter("REPORT_URL");
		if (url != null)
		{
			try
			{
				jasperPrint = (JasperPrint)JRLoader.loadObject(new URL(getCodeBase(), url));
				if (jasperPrint != null)
				{
					JRViewerSimple viewer = new JRViewerSimple(jasperPrint);
					this.pnlMain.add(viewer, BorderLayout.CENTER);
				}
			}
			catch (Exception e)
			{
				StringWriter swriter = new StringWriter();
				PrintWriter pwriter = new PrintWriter(swriter);
				e.printStackTrace(pwriter);
				JOptionPane.showMessageDialog(this, swriter.toString());
			}
		}
		else
		{
			JOptionPane.showMessageDialog(this, "Source URL not specified");
		}
	}


    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {//GEN-BEGIN:initComponents
        pnlMain = new javax.swing.JPanel();

        pnlMain.setLayout(new java.awt.BorderLayout());

        getContentPane().add(pnlMain, java.awt.BorderLayout.CENTER);

    }//GEN-END:initComponents
    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel pnlMain;
    // End of variables declaration//GEN-END:variables
    
}

The JSP report applet viewer:

<%@ page errorPage="/layouts/erro.jsp" %>

<%
  String appletWidth = "750";
  String appletHeight = "600";
%>

<html>
<head>
<title>Report Viewer</title>
</head>
<body BGCOLOR="#ffffff" LINK="#000099">
<!--"CONVERTED_APPLET"-->
<!-- HTML CONVERTER -->
<SCRIPT LANGUAGE="JavaScript"><!--
    var _info = navigator.userAgent; 
    var _ns = false; 
    var _ns6 = false;
    var _ie = &#40;_info.indexOf&#40;"MSIE"&#41; > 0 && _info.indexOf&#40;"Win"&#41; > 0 && _info.indexOf&#40;"Windows 3.1"&#41; < 0&#41;;
//--></SCRIPT>
<COMMENT>
<SCRIPT LANGUAGE="JavaScript1.1"><!--
        var _ns = &#40;navigator.appName.indexOf&#40;"Netscape"&#41; >= 0 && &#40;&#40;_info.indexOf&#40;"Win"&#41; > 0 && _info.indexOf&#40;"Win16"&#41; < 0 && java.lang.System.getProperty&#40;"os.version"&#41;.indexOf&#40;"3.5"&#41; < 0&#41; || &#40;_info.indexOf&#40;"Sun"&#41; > 0&#41; || &#40;_info.indexOf&#40;"Linux"&#41; > 0&#41; || &#40;_info.indexOf&#40;"AIX"&#41; > 0&#41; || &#40;_info.indexOf&#40;"OS/2"&#41; > 0&#41;&#41;&#41;;
        var _ns6 = &#40;&#40;_ns == true&#41; && &#40;_info.indexOf&#40;"Mozilla/5"&#41; >= 0&#41;&#41;;
//--></SCRIPT>
</COMMENT>

<SCRIPT LANGUAGE="JavaScript"><!--
    if &#40;_ie == true&#41; document.writeln&#40;'<OBJECT classid="clsid&#58;8AD9C840-044E-11D1-B3E9-00805F499D93" WIDTH="<%= appletWidth %>" HEIGHT="<%= appletHeight %>" codebase="http&#58;//java.com/en/download/windows_automatic.jsp"><NOEMBED><XMP>'&#41;;
    else if &#40;_ns == true && _ns6 == false&#41; document.writeln&#40;'<EMBED type="application/x-java-applet;version=1.1.2" CODE = "EmbeddedViewerApplet.class" CODEBASE = "applet" ARCHIVE = "jasperreports-0.6.4-applet.jar" WIDTH="<%= appletWidth %>" HEIGHT="<%= appletHeight %>" REPORT_URL = "<%= request.getParameter&#40;"REPORT_URL"&#41; %>" scriptable=false pluginspage="http&#58;//java.com/en/download/windows_automatic.jsp"><NOEMBED><XMP>'&#41;;
//--></SCRIPT>
<APPLET CODE="EmbeddedViewerApplet.class" CODEBASE="applet"
	ARCHIVE="jasperreports-0.6.4-applet.jar" WIDTH="<%= appletWidth %>" HEIGHT="<%= appletHeight %>"></XMP>
	<PARAM NAME=CODE VALUE="EmbeddedViewerApplet.class">
	<PARAM NAME=CODEBASE VALUE="applet">
	<PARAM NAME=ARCHIVE VALUE="jasperreports-0.6.4-applet.jar">

	<PARAM NAME="type" VALUE="application/x-java-applet;version=1.2.2">
	<PARAM NAME="scriptable" VALUE="false">
	<PARAM NAME="REPORT_URL" VALUE="<%= request.getParameter&#40;"REPORT_URL"&#41; %>">


</APPLET>
</NOEMBED>
</EMBED>
</OBJECT>

<!--
<APPLET CODE = "EmbeddedViewerApplet.class" CODEBASE = "applet" ARCHIVE = "jasperreports-0.6.4-applet.jar" WIDTH="<%= appletWidth %>" HEIGHT="<%= appletHeight %>">
<PARAM NAME = "REPORT_URL" VALUE ="<%= request.getParameter&#40;"REPORT_URL"&#41; %>">


</APPLET>
-->
<!--"END_CONVERTED_APPLET"-->

</body>
</html>

1) The applet make the /site/report.jasper request;
2) The ReportController handle the request
3) The JasperReportsPrintView intercepts, compile and return the JasperPrint object to the applet

TIA

[robh]

I've added a JIRA issue for this and targeted it for inclusion in Spring 1.2

Rob

[denglianglei]

when i type the test.japser request in ie.i meet a mistake
the infomation is
org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'report' defined in null: Instantiation of bean failed; nested exception is org.springframework.beans.FatalBeanException: Could not instantiate class [com.JasperReportsPrintView]; constructor threw exception; nested exception is java.lang.IllegalAccessError: tried to access method net.sf.jasperreports.engine.design.JRDefaultCompil er.<init>()V from class org.springframework.web.servlet.view.jasperreports .AbstractJasperReportsView
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:370)

would i copy someothers jars to lib?
i user the jasperreport-1.0.1.jar
thanks for your help

[Costin Leau]

Probably you are using an incompatible jar version - try using the jasperreports jar from the Spring distribution.

[morsch]

i have a similar problem.
i am trying to include jasperreports into a spring application. I define a controller that is supposed to generate a pdf-view of some database data. in the dispatcher-servlet i declare a beanNameViewResolver and a JasperReportsPdfView:

<bean id="jasperViewResolver" class="org.springframework.web.servlet.view.BeanNa meViewResolver">
<property name="order" value="0"/>
</bean>

<bean id="pdfLayout" class="org.springframework.web.servlet.view.jasper reports.JasperReportsPdfView">
<property name="url" value="/WEB-INF/fileadmin_report.jrxml"/>
</bean>


they cooperate with a BaseCommandController:

...
// methods
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

List listOfFolders = folderDao.showFolderList();
Map model = new HashMap();
model.put("dataSource", new JRBeanCollectionDataSource (listOfFolders));
return new ModelAndView(viewName, model);
}

I can deploy the application to a Tomcat but when trying to start it I get the error message:

exception

javax.servlet.ServletException: Servlet.init() for servlet fileadmin threw exception
org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)

root cause

org.springframework.beans.factory.BeanCreationExce ption: Error creating bean with name 'pdfLayout' defined in ServletContext resource [/WEB-INF/fileadmin-servlet.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.FatalBeanException: Could not instantiate class [org.springframework.web.servlet.view.jasperreports .JasperReportsPdfView]; constructor threw exception; nested exception is java.lang.IllegalAccessError: tried to access method net.sf.jasperreports.engine.design.JRDefaultCompil er.<init>()V from class org.springframework.web.servlet.view.jasperreports .AbstractJasperReportsView
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBean(AbstractAuto wireCapableBeanFactory.java:370)
org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:226)
org.springframework.beans.factory.support.Abstract BeanFactory.getBean(AbstractBeanFactory.java:147)
org.springframework.beans.factory.support.DefaultL istableBeanFactory.preInstantiateSingletons(Defaul tListableBeanFactory.java:275)
org.springframework.context.support.AbstractApplic ationContext.refresh(AbstractApplicationContext.ja va:318)
org.springframework.web.context.support.AbstractRe freshableWebApplicationContext.refresh(AbstractRef reshableWebApplicationContext.java:134)
org.springframework.web.servlet.FrameworkServlet.c reateWebApplicationContext(FrameworkServlet.java:3 05)
org.springframework.web.servlet.FrameworkServlet.i nitWebApplicationContext(FrameworkServlet.java:250 )
org.springframework.web.servlet.FrameworkServlet.i nitServletBean(FrameworkServlet.java:219)
org.springframework.web.servlet.HttpServletBean.in it(HttpServletBean.java:112)
javax.servlet.GenericServlet.init(GenericServlet.j ava:211)
org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(H ttp11Processor.java:856)
org.apache.coyote.http11.Http11Protocol$Http11Conn ectionHandler.processConnection(Http11Protocol.jav a:744)
org.apache.tomcat.util.net.PoolTcpEndpoint.process Socket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThr ead.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlR unnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)

anyone any idea?