How to open a PDF file in pdf reader with vaadin?

Question

A new Programmer here.

I was searching about open a PDF file with vaading. I can open it in the browser or download it without problem, but i need to open in a tab of my application, or at least open it in the predefined pdf reader and the Desktop class is not an option.

Can anyone help me? I only saw browser options, and now i was in war with the WT PDF Viewer class trying it.

Thank you a lot!

If you PDF is already available as downloadable file under some URL of your web application, then you can simply add an Anchor (Vaadin Flow) or Link (Vaadin 8) component to your UI that points to that URL. The browser will open a PDF viewer automatically. — Steffen Harbich
– Steffen Harbich, Commented Nov 6, 2018 at 11:45
hi! thank you for your response, but it is not for an URL is a temporal file that i create from jasper with the code. JasperPrint jrprint = JasperFillManager.fillReport(report, parameters, beanCollection); ByteArrayOutputStream byteArray = new ByteArrayOutputStream(); JasperExportManager.exportReportToPdfStream(jrprint, byteArray); — Daitona
– Daitona, Commented Nov 6, 2018 at 12:53
If you are using Vaadin 8, one possibility is to use Embedded since accepts Resource as parameter see API here vaadin.com/api/framework/8.6.0/com/vaadin/ui/Embedded.html and Resource here vaadin.com/api/framework/8.6.0/com/vaadin/server/Resource.html You probably would use StreamResource. — Tatu Lund
– Tatu Lund, Commented Nov 6, 2018 at 13:23
According to this question, it should be possible to use StreamResource also in Vaadin 7. There should be further documentation somewhere on the net. Vaadin 7 is old though. — Steffen Harbich
– Steffen Harbich, Commented Nov 6, 2018 at 15:00

Tatu Lund · Accepted Answer · 2018-11-07 14:03:54Z

1

If you are using Vaadin 7 & 8, one possibility is to use Embedded since accepts Resource as parameter see API for Vaadin 8 here https://vaadin.com/api/framework/8.6.0/com/vaadin/ui/Embedded.html and Resource here https://vaadin.com/api/framework/8.6.0/com/vaadin/server/Resource.html You probably would use StreamResource .

answered Nov 7, 2018 at 14:03

Tatu Lund

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