Base64 encoding and decoding in Groovy.

base64coding.groovy

def text = "Going to convert this to Base64 encoding!"

// Encode
def encoded = text.bytes.encodeBase64().toString()
println encoded


// Decode
byte[] decoded = encoded.decodeBase64()
println new String(decoded)

Got it working. Thanks.

def binaryFile = file("pathToBinaryFile")
        file("pathToBase64EncodedContent").withInputStream { input ->
            binaryFile.withOutputStream { output ->
                output.write(Base64.decoder.decode(input.text))
            }
        }