How to fix the exception java.lang.ClassCastException: java.lang.String cannot be cast to [B while getting the objctGUID from AD?

Question

I'm trying to fetch an unique identifier from windows AD. But at the following line of code:

byte[] objGUIDByteArr = (byte[]) attrs.get("objectGUID").get();

I'm getting the following exception

java.lang.ClassCastException: java.lang.String cannot be cast to [B

How to fix this & get the byte[] value from the objectGUID?

Answer 1

We must pass a base environment property to let spring LDAP know that objectGUID has to be returned in java.naming.ldap.attributes.binary format instead of the default String format.