Combine multiple jasper reports to single / Batch Export

Combine multiple jasper reports to single / Batch Export

Solution1:

JasperPrint[] jasperPrint = new JasperPrint[jaspers.length];

for (int i=0; i<jaspers.length; i++) {

   JRDataSource ds = //code for ds creation.

   Map jasperParams = //include report parameters

   jasperPrint[i] = JasperFillManager.fillReport(jaspers[i],jasperParams, ds)

}

JRAbstractExporter exporter = //code for export creation

exporter.setParameter(... //code for exporter parameters

exporter.setParameter(JRExporterParameter.JASPER_PRINT_LIST, jasperPrint);

exporter.exportReport();

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Solution2:

batchexport sample"

Solution3:

jasperPrint = JasperFillManager.fillReport(jasperReport, jasperParameter, con);

list.add(jasperPrint); 

exp.setParameter(JRPdfExporterParameter.JASPER_PRINT_LIST, list);

exp.setParameter(JRPdfExporterParameter.OUTPUT_FILE, new File("test.pdf"));

exp.exportReport();

Solution4:

You can take advantage of exporting the whole jasperprint list:

List jpList = new ArrayList();

jpList.add(JRLoader.loadObjectFromFile("build/reports/Report1.jrprint")); 

...

JRExporter exporter = new JRPdfExporter(); 

exporter.setParameter(JRPdfExporterParameter.JASPER_PRINT_LIST, jpList); 

exporter.setParameter(JRPdfExporterParameter.OUTPUT_STREAM, stream); 

exporter.exportReport();

Solution5:

I just want to show several JasperPrint Objects in only one JRViewer. Is

there a function to concat 2 or more JasperPrint Objects to one JasperPrint

Object? or something like that?

In pseudo code:

JasperPrint jp1 = JasperFillManager.fillReport(url.openStream(), parameters,

                    new JRBeanCollectionDataSource(inspBean));

JasperPrint jp2 = JasperFillManager.fillReport(url.openStream(), parameters,

                    new JRBeanCollectionDataSource(inspBean));

JasperPrint jp = jp1+jp2

jrviewer= new JRViewer(jp);

 
unfortunately the solution is build a sub report and use the 2 different DataSource or what ever connection you used



but there is an easy way to get over with this question :D
just simple no new reports ..... Wolaah 

ok lets do it

JasperPrint jp1 = JasperFillManager.fillReport(url.openStream(), parameters,

                    new JRBeanCollectionDataSource(inspBean));

JasperPrint jp2 = JasperFillManager.fillReport(url.openStream(), parameters,

                    new JRBeanCollectionDataSource(inspBean));

ok we have over 2 records ..lets take our first record  jp1 and add jp2 content into it

  

List pages = jp2 .getPages();

            for (int j = 0; j < pages.size(); j++) {

            JRPrintPage object = (JRPrintPage)pages.get(j);

            jp1.addPage(object);

       

    }

    JasperViewer.viewReport(jp1,false);

This work like a charm .. with couple of loops you can merge any number of report together .. without creating new reports  

Solution6:

JasperReport jr1 = (JasperReport) JRLoader.loadObject(...);

JasperReport jr2 = (JasperReport) JRLoader.loadObject(...);

JREmptyDataSource ds = new JREmptyDataSource(1);

JasperPrint print1 = JasperFillManager.fillReport(jr1, new HashMap(), ds);

ds.moveFirst();

JasperPrint print2 = JasperFillManager.fillReport(jr2, new HashMap(), ds);

List l = new ArrayList();

l.add(print1);

l.add(print2);

JRPdfExporter exp = new JRPdfExporter();

exp.setParameter(JRExporterParameter.JASPER_PRINT_LIST, l);

exp.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, SAVE_LOCATION);

exp.exportReport();

Solution7:

I looked at Jasper Reports, the defacto standard, but it seemed like I would only be able to create a multiple page PDF document that shared the same template. What's worse is that Jsaper Reports enforces a maximum height of 738 px in the detail section of the report. This meant I couldn't use page breaks to give each page its own unique look and feel.

After a little more reading, I discovered that Jasper Reports can generate PDF reports in "batch mode". Batch mode allows you to concatenate several reports together into a single File or OutputStream.

To use batch mode you must add your List of JasperPrint objects to the
JRExporterParameter.JASPER_PRINT_LIST parameter of the exporter.

Example:
ArrayList jasperPrintList = [Your logic for creating the list]

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

JRPdfExporter exporter = new JRPdfExporter();

exporter.setParameter(JRExporterParameter.JASPER_PRINT_LIST, jasperPrintList);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, outputStream);

exporter.exportReport();

inputStreamForStruts2 = new ByteArrayInputStream(outputStream.toByteArray());

http://europa.estadistica.unam.mx/jasperreports/dist/docs/sample.reference/nopagebreak/