Problems with JasperReports

[steckis fzas]

Hi all
Im trying code posted in this url:
Myexample

when i execute it i get the following error messages

It buils report with detail from an arraylist

 Exception in thread "main" net.sf.jasperreports.engine.JRException: Error loading object from file : D:\PruebaJasper\RelAlunosDisciplinas.jrxml
        at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:92)
        at net.sf.jasperreports.engine.util.JRLoader.loadObjectFromLocation(JRLoader.java:257)
        at net.sf.jasperreports.engine.fill.JRFillSubreport.evaluateSubreport(JRFillSubreport.java:311)
        at net.sf.jasperreports.engine.fill.JRFillSubreport.evaluate(JRFillSubreport.java:260)
        at net.sf.jasperreports.engine.fill.JRFillElementContainer.evaluate(JRFillElementContainer.java:274)
        at net.sf.jasperreports.engine.fill.JRFillBand.evaluate(JRFillBand.java:403)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillColumnBand(JRVerticalFiller.java:1346)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:662)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:232)
        at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:113)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:763)
        at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:688)
        at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:89)
        at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:601)
        at com.GeraRelatorio.<init>(GeraRelatorio.java:36)
        at com.GeraRelatorio.main(GeraRelatorio.java:42)
Caused by: java.io.StreamCorruptedException: invalid stream header
        at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:763)
        at java.io.ObjectInputStream.<init>(ObjectInputStream.java:278)
        at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:87)
        ... 15 more
Java Result: 1   

Any Help??? Please

[Joel McNary]

You need to compile the report first and use the generated .jasper file instead of the .jrxml file.

I compile my reports as part of the build, so I use the custom ANT task:

net.sf.jasperreports.ant.JRAntCompileTask


But you can also compile the report manually (though an editor such as iReport or though a call in the Jasper API

[steckis fzas]

Hi,
I compiled the *.jrxml files so now i Have RelAlunos.jasper and RelAlunosDisciplinas.jasper.
Here`s my
example changed

But now I get this errors

  Exception in thread "main" java.lang.NullPointerException
        at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java:2222)
        at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2235)
        at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:2703)
        at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:760)
        at java.io.ObjectInputStream.<init>(ObjectInputStream.java:278)
        at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:191)
        at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:580)
        at com.GeraRelatorio.<init>(GeraRelatorio.java:33)
        at com.GeraRelatorio.main(GeraRelatorio.java:41)
Java Result: 1
  

:S

[ August 04, 2007: Message edited by: steckis fzas ]
[ August 04, 2007: Message edited by: steckis fzas ]