Get Attachments through REST API

Aruna Sree Yela · ‎02-10-2025

Hi,

3rd party tool is calling servicenow to get attachments of RITM in binary stream.

I want to achieve this using script include and Scripted REST API. How to achieve this

Thanks

Ankur Bawiskar · ‎02-11-2025

@Aruna Sree Yela

I am able to get the base64 data using background script in global scope

You can check the script and enhance

I believe if the base64 string is huge then it might not work while setting the response of scripted rest api

var attGr = new GlideRecord('sys_attachment');
  attGr.addQuery('sys_id', 'b45f80356f102100758ecb512e3ee485');
  attGr.query();
  if(attGr.next())
        {
   var gsu = (typeof GlideStringUtil != 'undefined') ? (GlideStringUtil) : (Packages.com.glide.util.StringUtil); //few versions support the first one, other supports second
   var gsa = (typeof GlideSysAttachment != 'undefined') ? (new GlideSysAttachment()) : (new Packages.com.glide.ui.SysAttachment());
   var attachmentData = gsa.getBytes(attGr);
   var attachment = String(Packages.java.lang.String(attachmentData));
   gs.info(attachment); //the data in the file will be printed as String
   var encData = GlideStringUtil.base64Encode(attachmentData); // data of one attachment at a time
   gs.info(encData);
}

Output:

If my response helped please mark it correct and close the thread so that it benefits future readers.

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

View solution in original post

Ankur Bawiskar · ‎02-19-2025

@Aruna Sree Yela

it's a platform limitation

If my response helped please mark it correct and close the thread so that it benefits future readers.

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

Aruna Sree Yela · ‎02-19-2025

@Ankur Bawiskar

I did noticed attachment API, which is giving meta data of the file.

But how that sends the actual attachment to target?

And is that helpful to get large file also?

Ankur Bawiskar · ‎02-19-2025

@Aruna Sree Yela

how are you using that API? share some details

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

Ankur Bawiskar · ‎02-11-2025

@Aruna Sree Yela

you said you got the base64 in log?

But unable to send the base64 as scripted REST API response

share the complete scripted rest api script here?

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader

Ankur Bawiskar · ‎02-17-2025

@Aruna Sree Yela

Thank you for marking my response as helpful.

If my response helped please mark it correct and close the thread so that it benefits future readers.

Regards,
Ankur
✨ Certified Technical Architect || ✨ 9x ServiceNow MVP || ✨ ServiceNow Community Leader