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Resolved Generate file in web app

  1. How-to
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  1. Cecilia Jiménez Bedoya
    Cecilia Jiménez Bedoya
  2. PowerServer 2020 or older (Obsolete)
  3. Monday, 21 January 2019 13:54 PM UTC

Hello! 

I am making a web app, when I click a button I get through a webservice a string with the data of a pdf encoded in base 64.
To be able to show it in the web browser I have to generate the pdf file.
I would like this file to be saved in a web server folder but I do not know how to write to the server with the powerserver.

Another option that I have tried has been generate the file by this way:
ls_file = AppeonGetCacheDir () + '\ plugin \ temp_file_name
li_file = FileOpen (ls_file, StreamMode !, Write !, LockWrite !, Replace!) but this always returns -1.

Could someone tell me why this is failing. And even better, could someone tell me if I can access a server folder and generate the file there.

 

Thank you very much again!!

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Responses (3)
Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Tuesday, 22 January 2019 19:54 PM UTC
  2. PowerServer 2020 or older (Obsolete)
  3. # 1

Hi Cecelia;

   Yes, you can build a PB Web Service and just call it from the Web or Mobile App. The WS can build the PDF on the Server side and either use a NativePDF, GhostScript or other 2rd party product to build the PDF. The PDF can be placed on a "Landing Zone" folder or as a Blon in a DB Table on the server side. Your App can either use the iNet object to have it returned to the Web or Mobile device, use a Select Blob or you can use the PowerServer File Transfer mechanism that Marco is talking about.

   If you are interested, I have a full IIS Web Service example that generates a PDF on the server side. The example also has a client app that calls the WS. You can download the full Server PDF Example from here: https://sourceforge.net/projects/stdfndclass/files/Applications/WebService/PDF

HTH

Regards ... Chris

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Marco Meoni
Marco Meoni Accepted Answer Pending Moderation
  1. Tuesday, 22 January 2019 10:02 AM UTC
  2. PowerServer 2020 or older (Obsolete)
  3. # 2

Hi Cecelia,

I would use the PowerServer "File Service" plugin:

https://www.appeon.com/support/documents/appeon_online_help/2017/workarounds_and_api_guide/ch01s03s04.html

It allows to upload (and download) files of your choice.

Another possibility would be to deploy, from PB, your own .NET Web Service that receive local files (as blob).

I would go for File Service, it is more handy and easier to integrate in PowerServer.

Best,

.m

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Cecilia Jiménez Bedoya
Cecilia Jiménez Bedoya Accepted Answer Pending Moderation
  1. Tuesday, 22 January 2019 09:15 AM UTC
  2. PowerServer 2020 or older (Obsolete)
  3. # 3 
I found the problem, it was the spaces in the file path. embarassed
Still, is there any way to generate files on the server?

Thank you.
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