How to decode base 64 format in jmeter?

Question

Does anyone know a solution to decode a base 64 format string in JMeter?

I have to decode the a response, but i don't want to reinvent the wheel...

Do i have to write the code by myself (hope not)?

Thanks

Answer 1

Your solution is pretty good. However you can use Beanshell Post Processor and refer previous sampler response data as data (see JMeter Pre-defined Beanshell variables section)

import org.apache.commons.codec.binary.Base64;

vars.put("decoded_response", new String(Base64.decodeBase64(data)));

Answer 2

My current solution is:

import org.apache.commons.codec.binary.Base64;

log.info("Decoding base64 format");

String response = "b3JpZ2luYWwgU3RyaW5nIGJlZm9yZSBiYXNlNjQgZW5jb2RpbmcgaW4gSmF2YQ==";
byte[] decoded_response = Base64.decodeBase64(response);
log.info(new String(decoded_response));

Which is based on the solution provided by http://javarevisited.blogspot.pt/2012/02/how-to-encode-decode-string-in-java.html .

EDIT: Check Dmitri solution for more details.

Thanks