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APS Attachment

Question asked by phoefler on Sep 26, 2017
Latest reply on Sep 27, 2017 by phoefler



I am developing an external webapp (based on Javascript) that is using the alfresco-js-api to communicate with Alfresco Process Services (1.6.0). I want to display an attached document in the browser.


First, the js-api is working fine. I can authorize and connect to Activiti either via credentials or via ticket.

I am trying to open an attachment from a task. I know the js-api provides some function for that purpose.

Basically, I see two possibilities:

  1. I download the content of the file through the js-api and then trying to view it “manually”
  2. I provide the direct url (raw url) to the attachment and by clicking on that link the attachment will be opened.


I tried both and both ways have some problems.

When I am going to download the content it’s an asynchronous action. This means, when I am trying to open a new tab after the content has been downloaded, the browser will always recognize this new tab/window as pop up and blocks it. This is not specifically related to the Activiti URL, but to the fact that the download is asynchronous. So, I think it’s not a very good solution. Maybe for desktops it’s easier to make an exception for that URL for the whole landscape, but on mobile end devices it’s quite harder.


Then, I tried to provide the raw URL through a hyperlink. Whenever the end user clicks on it the action is synchronous and the browser does not detect this behavior as pop up. Unfortunately, I am not able to pass the credentials to this request. This is NOT done via the js-api.

And that’s basically my question. Is there any possibility to authorize to Activiti through a hyperlink whether via credentials or via ticket?

I tried to find a solution for that by calling the URL with an REST client. I passed the credentials to the request, but it is not working.


Can anybody explain how to properly display an attachment?

Again, the webapp is not based on ADF.