In my project there is a need to download the salesforce attachment body in JAVA and encode the body and send it to another system.
I am using HttpEntity to download the attachment from salesforce
baseurl+/sobject/attachment/attachid/Body
The above call returns byte[]. 
I am encoding the byte array using below code in java.
Encoder encoder = new BASE64Encoder();
String encodedPdf = encoder.encode(response.getBody.toString.getBytes()); System.out.println(encodedPdf);

Now the encodedPDF when conveerted as file retuns blank file.
This is  case for PDF and DOC. But other format works.
Any input will be helpful.

global with sharing class GetObjectsAWS{
 
    @AuraEnabled

    public static List<ContentssArray> GetObject(){
   String jsonResponse = XMLParser.xmlToJson(res.getBody());
       // String json ='Contents:{"Key": "my-third-image.jpg", "LastModified": "2009-10-12T17:50:30.000Z", "ETag": "\"1b2cf535f27731c974343645a3985328\"", "Size": "64994", "StorageClass": "STANDARD_IA", "Owner": {"ID": "75aa57f09aa0c8caeab4f8c24e99d10f8e7faeebf76c078efc7c6caea54ba06a", "DisplayName": "mtd@amazon.com"}}';
        system.debug('+++++Body is'+jsonResponse);
      
        Map<String,Object> jsonParsed =(Map<String,Object> ) JSON.deserializeUntyped(jsonResponse);
        Map<String,Object> content_collection = ( Map<String,Object>) jsonParsed.get('ListBucketResult');
        List<Object> ContentssArray =( List<Object> ) content_collection.get('Contents');
        
        for(Object inidividualEntries : ContentssArray){
            Map<String,Object> ind = (Map<String,Object> )inidividualEntries;
            System.debug('Key = '+ ind.get('Key'));
            System.debug('Size = '+ ind.get('Size'));
             
            System.debug('---------------------------------------------');
        }

   return ContentssArray;

    }

Trying to dispay the JSON response in the lightnign component. Hence returning LIST in the apex controller. But getting below errors:
Invalid type: ContentssArray
Illegal conversion from List<Object> to List<ContentssArray>
Thanks In Advance

In my project there is a need to download the salesforce attachment body in JAVA and encode the body and send it to another system.
I am using HttpEntity to download the attachment from salesforce
baseurl+/sobject/attachment/attachid/Body
The above call returns byte[]. 
I am encoding the byte array using below code in java.
Encoder encoder = new BASE64Encoder();
String encodedPdf = encoder.encode(response.getBody.toString.getBytes()); System.out.println(encodedPdf);

Now the encodedPDF when conveerted as file retuns blank file.
This is  case for PDF and DOC. But other format works.
Any input will be helpful.

Hi everyone,

I'm doing a rest call to retrieve attachments out of Salesforce. The first call would get the information of the attachment which has the URL to the body of the attachment. From there, I take the URL of the body and do another call to retrieve the contents of the attachment.

The calls are successful, however, when getting a response back, the response.getBody() return a string that does not translate to anything. When saving to a file or reuploading or encoding it, it always ends up to be gibberish or a broken file.

 

My questions are:

 what kind of content does the GET method return for the URL: https://SOME_ORG.salesforce.com/services/data/v20.0/sobjects/Attachment/SOME_ID/body

Am I missing anything to get the correct format? The headers that are being included in the final call for my attachment body are Content-Type, Authoriatization, and Accept

 

I also forgot to mention that postman is able to retrieve and display the content just fine. The issue is that the rest call returns a binary string and I am unable to translate it back to the actual content itself.