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Jam2021
Level 2
April 19, 2024
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How to download image from DAM using AEM HTTP API?

  • April 19, 2024
  • 1 reply
  • 1528 views

I am trying to download image thumb nails or original from DAM and show on another web page hosted by another server. Here is my Java servlet:

public void downloadImage(String img_name) throws IOException { String asset_api = "https://dam.company.com/api/assets/products/" + img_name + "/renditions/cq5dam.thumbnail.319.319.png"; try { URL url = new URL(asset_api); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestProperty("Content-Type", "application/octet-stream"); conn.setRequestProperty("Authorization", "Basic xxxxxxxxx"); conn.setDoOutput(true); System.out.println("resp=" + conn.getResponseCode() + " - " + conn.getResponseMessage()); ...... } catch (Exception ex) { ex.printStackTrace(); } }

But it got error: HTTP/1.1 404 Not Found. I can opened asset_api on the browser directly and it absolutely exists and works fine. Do I need to set permission for running AEM HTTP API for account used in this servlet or need some other settings?

 

Thanks,

James

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Best answer by Jam2021

Krati,

 

I found out it's permission issue for the account used in above servlet. When I checked Read ACL for this account in account permission setting page, the above servlet works fine. 

 

Thank you for your time.

James

1 reply

krati_garg
Adobe Employee
krati_gargAdobe Employee
Adobe Employee
April 20, 2024

@jam2021 Assets HTTP API are to perform CRUD operations. The above URL will let you read or view the asset but not download it. However, there is a Download Config which essentially enables the Download Servlet and lets you download the Asset via HTTP call.

Enable Asset Download Servlet: https://experienceleague.adobe.com/en/docs/experience-manager-cloud-service/content/assets/manage/download-assets-from-aem#enable-asset-download-servlet:~:text=from%20the%20inbox.-,Enable%20asset%20download%20servlet,-The%20default%20servlet

curl command to download:https://experienceleague.adobe.com/en/docs/experience-cloud-kcs/kbarticles/ka-21528

 

Let me know, if this helps.

    J
    Jam2021AuthorAccepted solution
    Level 2
    April 22, 2024

    Krati,

     

    I found out it's permission issue for the account used in above servlet. When I checked Read ACL for this account in account permission setting page, the above servlet works fine. 

     

    Thank you for your time.

    James

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