Activity › Forums › Salesforce® Discussions › How to combine the blob value of multiple blob in Salesforce Apex Code?

Tagged: , , , ,

  • Himanshu

    Member
    August 5, 2016 at 7:03 am

    Hi Mohit,

    Blob bb1 = Blob.valueOf(‘s1’);
Blob bb2 = Blob.valueOf(‘s2’);
Blob bb3 = Blob.valueOf(‘s3’);

String combinedDataAsHex = EncodingUtil.convertToHex(bb1) + EncodingUtil.convertToHex(bb2) + EncodingUtil.convertToHex(bb3);
Blob combinedDataAsBlob = EncodingUtil.convertFromHex(combinedDataAsHex);

  • Avnish

    Member
    September 30, 2018 at 4:08 am

    Hello,

    Blob is a sequence of Bytes and it need to be converted to string representation for concatenation. In Apex there are only two ways to convert Blob to String, either use base64Encode or convertToHex as suggested above. base64Encode will not work in this case as base64Encode appends additional information during encoding and this causes corrupted data if two base64Encoded Blob values are combined and converted back to Blob using EncodingUtil.base64Decode() method.

    Thanks.

Log In to reply.

Popular Salesforce Blogs

Popular Salesforce Videos

Report

Harassment or bullying behavior
Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Mobile App Reported Contents
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .