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Exporting to Excel


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By: marquis225 - marquis225

Exporting to Excel

2004-06-16 11:58

I have a jasper problem when I try to export to Excel.

 

I'm currently using Jasper 0.5.2 and poi 2.5.

 

This is the code I'm executing:

 

JasperFillManager jasperFillManager = new JasperFillManager();

jasperPrint = jasperFillManager.fillReport(jasperReportObject,parameters,connection);

JRXlsExporter exporter = new JRXlsExporter();

ByteArrayOutputStream xlsReport = new ByteArrayOutputStream();

exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);

exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, xlsReport);

exporter.exportReport();

byte[] reportBytes = xlsReport.toByteArray();

System.out.println(reportBytes.length);

response.setContentType("application/vnd.ms-excel");

response.setHeader("content-disposition", "inline;report.xls");

response.setContentLength(reportBytes.length);

ServletOutputStream outputStream = response.getOutputStream();

outputStream.write(reportBytes, 0, reportBytes.length);

outputStream.flush();

outputStream.close();

if(connection != null && !connection.isClosed()){try{connection.close();}catch(Exception e){}}

 

When I execute this code from the jsp, I get the following error:

java.lang.NoSuchMethodError: org.apache.poi.hssf.usermodel.HSSFSheet.createRow(S)Lorg/apache/poi/hssf/usermodel/HSSFRow;

at dori.jasper.engine.export.JRXlsExporter.exportPage(JRXlsExporter.java:386)

at dori.jasper.engine.export.JRXlsExporter.exportReportToStream(JRXlsExporter.java:353)

at dori.jasper.engine.export.JRXlsExporter.exportReport(JRXlsExporter.java:282)

 

I looked into the forum and found some advice on this posting:

http://sourceforge.net/forum/message.php?msg_id=2230479

 

I edited the java file, recompiled the classes and rejared the packages, but I was getting errors like this:

C:apijasperreports_edited.jar(dori/jasper/engine/JasperReport.java):80: class JasperReport is public, should be declared in a file named JasperReport.java

(source unavailable)

 

So, at this point, I'm stuck. Not sure what else I can do. Any help would be appreciated.

 

 

 

 

 

By: gromeroq - gromeroq

RE: Exporting to Excel

2004-06-24 13:12

I have the same error:

org.apache.poi.hssf.usermodel.HSSFSheet.createRow(S)Lorg/apache/poi/hssf/usermodel/HSSFRow;

 

Coud somebody help us telling us how to solve this problem?

 

 

 

 

 

By: Chuck Deal - cdeal

RE: Exporting to Excel

2004-06-25 06:06

It sounds like you are using the wrong version of POI for the version of Jasper that you are running.

 

 

 

 

By: gromeroq - gromeroq

RE: Exporting to Excel

2004-06-25 07:11

In my case I'm currently using Jasper 0.4.6 and poi version 1.5.1. Which other version do I have to use?

 

 

 

 

 

By: Chuck Deal - cdeal

RE: Exporting to Excel

2004-06-25 07:21

Well, that seems to be right.

 

I hate to ask the questions...but...are you SURE that those are the files that are on the classpath?

 

 

 

 

By: gromeroq - gromeroq

RE: Exporting to Excel

2004-06-25 08:34

I am sure about the files in the classpath. I think the problem seems to be a bug on JasperReports that I find in this posting:

http://sourceforge.net/forum/message.php?msg_id=2230479

 

Well, we had to dig down into the Jasper source code to find out. Look at the Jasper 0.4.6 JRXlsExporter object(dori.jasper.engine.export.JRXlsExporter) on line 386, and you'll see the following code:

 

row = this.sheet.createRow((short)y);

 

It's calling the createRow() method on a POI object named org.apache.poi.hssf.usermodel.HSSFSheet. However, it's casting the "y" var (which is an int) to a short. The new HSSFSheet.createRow() method only accepts "int" parameters, so passing it a "short" causes the error.

 

Is that the problem? If this is the problem I need the source code of JasperReports 0.4.6, where can I find it? Because I can only find the source code of version 0.5.3

 

 

 

 

 

 

 

By: Chuck Deal - cdeal

RE: Exporting to Excel

2004-06-25 10:35

If you look at the top of the SourceForge window, you'll notice a set of Links (Summary, Admin, ...) One of those links is called Files. However, when I went to Files, only Jasper versions from 0.5.0 on were listed. I looked on my drive to see if I still had the project file for 0.4.6 but no luck.

 

You'll have to petition some kind soul to email you the project file.

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