Win a copy of Emmy in the Key of Code this week in the General Computing forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Junilu Lacar
  • Jeanne Boyarsky
  • Bear Bibeault
Sheriffs:
  • Knute Snortum
  • Devaka Cooray
  • Tim Cooke
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • Ron McLeod
  • Carey Brown
Bartenders:
  • Paweł Baczyński
  • Piet Souris
  • Vijitha Kumara

Problem with jasper report -loading stream

 
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi there...

i am currently experimentating with ireport and jasper report... i have the following code:

public void display()
{
FileInputStream file = new FileInputStream("D:\\reports_jasper\\JASPER\\report1.jasper");
System.out.println("loading report.. file read "+file.available());

JasperReport jasperReport = (JasperReport) JRLoader.loadObject(file);
System.out.println("Successfully created jasper report");

java.sql.Connection con=null;

try
{
Class.forName("com.mysql.jdbc.Driver").newInstance();
con = DriverManager.getConnection("jdbc:mysql://localhost/eply",
"user", "123");

if(!con.isClosed())
System.out.println("Successfully connected to MySQL server using TCP/IP...");
}
catch(Exception e)
{
System.out.println("Exception: "+ e);
}

JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport,null,con);

JasperViewer.viewReport(jasperPrint,false);
}
catch(Exception e)
{
System.out.println("There is exception here"+ e);
}
}

When i run my code, it gives me an error like below:
loading report.. file read 14143
There is exception herenet.sf.jasperreports.engine.JRException: Error loading object from InputStream

It will never print successfully created jasper report.. so i guess it has to do with my loading of the jasper report file.

i use ireport to create my report and it compile the report1.jrxml into report1.jasper. i dun understand the error. i included the jasperreports-0.6.2.jar into my library which i run under eclipse. is there any other things that i miss out?

chris
 
Ranch Hand
Posts: 995
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
christina, you'll probably find out more about your problem if you'll print out the whole exception stacktrace. if this will not give you a better idea, try pasting it here and somebody might find out the issue.

good luck
--
./pope
 
christina ku
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Aee.. well... that's it all that it prints out from my code inside the catch statement.
Doesn't help much does it? How come i could not load the .jasper file? i search the net and almost all people got along well with the same code i have.

any advice? or suggestion?

chris
 
Alexandru Popescu
Ranch Hand
Posts: 995
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
christina I am pretty sure that some e.printStackTrace(); in catch blocks will reveal you more details ;-).

--
./pope
 
christina ku
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
okie.. i paste that in the catch clause for JRException and this is wat it gives me. Brace yourself.. :

java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 601, local class serialVersionUID = 602
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:233)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel.display(ReportOptionsPanel.java:757)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel$2.widgetSelected(ReportOptionsPanel.java:223)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at my.com.shinyang.ui.MainWindow.run(MainWindow.java:28)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
at org.eclipse.core.launcher.Main.run(Main.java:704)
at org.eclipse.core.launcher.Main.main(Main.java:688)

NESTED BY :
java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 601, local class serialVersionUID = 602
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:233)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel.display(ReportOptionsPanel.java:757)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel$2.widgetSelected(ReportOptionsPanel.java:223)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at my.com.shinyang.ui.MainWindow.run(MainWindow.java:28)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
at org.eclipse.core.launcher.Main.run(Main.java:704)
at org.eclipse.core.launcher.Main.main(Main.java:688)

NESTED BY :
net.sf.jasperreports.engine.JRException: Error loading object from InputStream
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:237)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel.display(ReportOptionsPanel.java:757)
at my.com.shinyang.eply.ui.panels.ReportOptionsPanel$2.widgetSelected(ReportOptionsPanel.java:223)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2431)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at my.com.shinyang.ui.MainWindow.run(MainWindow.java:28)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.basicRun(Main.java:185)
at org.eclipse.core.launcher.Main.run(Main.java:704)
at org.eclipse.core.launcher.Main.main(Main.java:688)
Caused by: java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 601, local class serialVersionUID = 602
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:233)
... 22 more

help....!!
 
Alexandru Popescu
Ranch Hand
Posts: 995
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
It seems that the local object is different than the remote object (retrieved from the jdbc connection (?)). Take a look at using serialVersionUIDs and you'll probably fix it soon.

good luck
--
./pope
 
christina ku
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
what does it means by serialVersionUID ? how can i resolve it? is it something wrong with my jasper file that i created using ireport? for your info, i am using ireport 0.4.0 with jasper 0.6.2.

please advice.
chris
 
Alexandru Popescu
Ranch Hand
Posts: 995
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
serialVersionUID is a generated no. used while serializing/deserialization of objects for assuring that compatibile bytecode is serialized/deserialized.

--
./pope
 
author
Posts: 14112
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You probably need to recompile your report design file using the same JDK and version of JasperReports you are using at runtime.
 
christina ku
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
ok.. solve that already.. Thanks for the advice.
 
Ranch Hand
Posts: 1490
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Christina, How you solved this probelm ? It may be helpful to every-body..
 
christina ku
Greenhorn
Posts: 8
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
It's simply because the iReport version 0.4.0 is not compatible with jasperreport version 0.6.2.

So i change back to using jasperreport version 0.6.1 instead. I think it's something to do with the jasper file generated by ireport which cannot be opened by jasperreport 0.6.2.

Just an idea though i am not so sure about that. Good by me as long as it works..

chris
 
Police line, do not cross. Well, this tiny ad can go through:
Java file APIs (DOC, XLS, PDF, and many more)
https://products.aspose.com/total/java
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!