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Print preview of an already written .pdf file


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Hello forum users!!


I made a big and complex report from two little reports. What I want to know is that if I can make a print preview of this.


I mean, with a simple report, I can pass a JasperPrint object as parameter to JasperViewer.viewReport(), but, in this case, I have two JasperPrint objects.


There is an implementation of JasperViewer.viewReport() that takes as first parameter a String, but it doesn't work.


Anybody can help me?


Thanks a lot

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If I understand correctly, you want to use the existing JRViewer to display two reports as being only one.

The only solution I could think of is to merge the two separate JasperPrint objects into one.

This could be achieved by copying pages from one document into the other.

Besides pages, I think report-level styles should also be copied.

Did not try this lately, but maybe you could give it a try and let us know.


Thank you,


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Hello Teodor.


Thanks for your help, but I solved my problem in a different way. I think it's an uglier way, but I don't care.


What I did is merging the two subreports by doing a loop in my Java program and feeding both subreports with the data several times.


All the reports generated are enqueued in a list, and finally I pass this list to a JrPdfExporter as a parameter and voila! I got what I wanted: a report with portrait and landscape pages alternated.


Maybe I'll send it just to be the Report of the Month...hehe


Thanks for this powerful library!!

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