Error loading class while using scriptlets in Jasper Studio

[gowthamsenmca]

Hi,

I am trying to use scriptlets in my report using Jasper Studio.

The java scriptlet class is working perfectly fine independently which is tested.

I added the classpath using window --> Preferences --> Java --> BuildingPath --> Classpath Variables

And I am referring the class using package. <packagename>.ScriptletName. I added this as a superclass for report properties.

But I am getting an error asfollows

net.sf.jasperreports.engine.JRException: net.sf.jasperreports.engine.JRException: Error loading scriptlet class :<scriptletname>

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.fillReport(ReportControler.java:482)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.access$18(ReportControler.java:457)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler$4.run(ReportControler.java:347)

at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

 

Any help will be very useful.

 

Best Regards

Gowtham

[Massimo Rabbi]

Hi,
there is no need to use the "Classpath Variables". If you are writing your own scriptlet class inside JSS, then you can add a new "Source Folder" and put it in there. If you are using a scriptlet class coming from a jar, then you should use the "Java Build Path > Libraries (tab)" and add a new (external, if outside workspace) jar.

Best regards,
Massimo.

P.S: if you are not familiar with the Eclipse environment, please give a look at some these sample articles that explains a bit the Java Build Path page.
- http://my.safaribooksonline.com/book/software-engineering-and-development/ide/0321288157/java-project-configuration/ch06lev1sec1
- http://help.eclipse.org/juno/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Freference%2Fref-properties-build-path.htm

[gowthamsenmca]

Hi,

 

I tried to add jar file using "Add external Jar". But this option is disabled. I can see only "New" and "Import" options in enabled.

 

Please suggest!

 

Thank you

[gowthamsenmca]

The scriptlets are working when placing the Java class and the report in the same project. If both are in different projects, as you mentioned we need to add the jar file using the above mentioned method. But the option you have mention is disabled.

[Massimo Rabbi]

Hi, 

can you please check that "Java Capabilities" are enabled? Verify it from "Window > Preferences > General > Capabilities > Development > Java Development".

 

Anyhow, I think I got it what are your steps. Therefore if you really want to use a USER LIBRARY, then from that Preference page "Window > Preferences > Java > Build Path > User Libraries", first of all click on "New" button in order to create a new definition. Then clicking on the definition itself you will see that the "Add External JARs" button is enabled. Look at the two screenshots: scriptlets_USERLIBRARY_1.png and scriptlets_USERLIBRARY_2.png.

It will show the steps and how to use them later in your JasperReports Project.

 

Another option, as I said in the previous reply is to use directly the Java Build Path properties page of your project and add the external jar from there.

See the other screenshot attached.

It's up to you. 

 

Hope that this solves your doubts.

Best regards,

Massimo.