jasper in a WebApp

[Michael Houlo]

Hello,

I generated a jrxml file and a jasper file with iReport.
I made a simple swing application to generate a pdf file from those files. It worked perfectly.

Now, i tryed to integrate it into my web application.
I use the same way to generate it :

   

JasperDesign jasperDesign = JRXmlLoader.load(this.getServletContext().getRealPath("/") + ConstantsFields.MYAPP.REPORT_PATH + "histo.jrxml");
	
JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
 
//Paramètres à envoyer au rapport
Map parameters = new HashMap();
// parameters.put("titre", "Titre");
 
//Execution du rapport
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, db.getConn());
 
//Création du rapport au format PDF
JasperExportManager.exportReportToPdfFile(jasperPrint, "C:\\identite.pdf");

This is the content of my Servlet page. It imports the jasper classes and there isn't any compilation error.

Now, when i run it, i have some runtimes errors..

7/06/10 12:01:12:473 CEST] 5f5264c8 SystemOut     O Errors were encountered when compiling report expressions class file:
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:4: package net.sf.jasperreports.engine does not exist
import net.sf.jasperreports.engine.*;
^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:5: package net.sf.jasperreports.engine.fill does not exist
import net.sf.jasperreports.engine.fill.*;
^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:14: package net.sf.jasperreports.engine does not exist
import net.sf.jasperreports.engine.*;
^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:15: package net.sf.jasperreports.engine.data does not exist
import net.sf.jasperreports.engine.data.*;
^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:21: cannot resolve symbol
symbol  : class JREvaluator 
location: class histo_1275904870160_127141
public class histo_1275904870160_127141 extends JREvaluator
                                                ^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:28: cannot resolve symbol
symbol  : class JRFillParameter 
location: class histo_1275904870160_127141
    private JRFillParameter parameter_REPORT_RESOURCE_BUNDLE = null;
            ^
C:\Program Files\IBM\WebSphere Studio\Application Developer\v5.1.1\histo_1275904870160_127141.java:29: cannot resolve symbol
symbol  : class JRFillParameter 
location: class histo_1275904870160_127141
    private JRFillParameter parameter_REPORT_CLASS_LOADER = null;

I know there is already a thread about it in this forum but it looks like he simply forgots to add jars into the classpath..
Since my servlet doesn't have any compilation errors, i guess my classpath is correct.
Here is a part of it :

    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-collections-2.1.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-digester-1.7.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-beanutils-1.7.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-io-1.4-javadoc.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-fileupload-1.2.1-javadoc.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/jxl.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-fileupload-1.2.1.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/mail.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-io-1.4-sources.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-fileupload-1.2.1-sources.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-io-1.4.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/jasperreports-2.0.2.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-logging-api-1.0.2.jar"/>
    <classpathentry kind="lib" path="WebContent/WEB-INF/lib/commons-logging-1.0.2.jar"/>

I hope you can tell me what's wrong with that
Thanks.

[David Newton]

For whatever reason, you're missing a/some required library in the deployment. Showing Ant (I assume?) stuff doesn't really tell us what's being deployed. I would have said that JR had several more dependencies than you show here, too, like iText, at the very least.

[Michael Houlo]

I'm using WSAD.
Well, it looks like the missing classes are the ones include in jaspere2.0.2.jar .
That's why i'm so confused :s

[David Newton]

Are they being deployed? Have you added the rest of its dependencies? I don't recall having to do anything other than deploy everything, and that was also using WSAD.

[Michael Houlo]

I've got a good question for you >_<

How do i check it ?

[Michael Houlo]

Ok, you were right.
It's a missing jar ! ( jdt-compiler.jar .. maybe it'll help someone else in the future ).

Still, i can't understand why i had no compilation error and why this errors happen only at runtime .. (with no details.. )
Can you explain me how to make sure we added all dependencies, how do i check what's exactly being deployed ?

Thanks a lot.

[David Newton]

Because reports in XML form are compiled at runtime if you don't pre-compile them.

Transitive dependency management is why things like Maven and Ivy were invented. You can always check the JR dependency list on their site.

[Michael Houlo]

Yes but the import clause from the XML file was exactly the same as the Servlet ones.

Interesting, i think i'll give it a try and use Maven or Ivy then

Thanks a lot for your help and your time.

[David Newton]

You asked why it happened at runtime--because jrxml files are compiled at runtime.