Automatically open the printer dialog after providing PDF download

Question

I am currently opening a pdf file in a new tab in my browser but I need to know how to open a printer dialog to print the pdf jasper report after pressing a commandButton

Answer 1

With JasperReports

When using JasperReports, simply add this parameter to JasperReports exporter:

exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.print();");

This basically instructs Adobe Acrobat to execute the script this.print() when opening the PDF. See also page 79-80 of Adobe Acrobat Scripting Guide. Below is an extract of relevance:

Printing PDF Documents

It is possible to use Acrobat JavaScript to specify whether a PDF document is sent to a printer or to a PostScript file. In either case, to print a PDF document, invoke the doc object’s print method. [...]

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Without JasperReports

If you don't have control over generation of PDFs and thus can't manipulate it to add the mentioned script, an alternative is to change all the Java/JSF code accordingly so that the PDF file is idempotently available (i.e. the PDF file must be available by just a GET request rather than a POST request). This allows you to embed it in an