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)

It depends on what the encoded text contains. For example base64 could contain a jpeg image or zip file. Basically decode returns you byte array, try saving that to a file when you know what it contains.

…

Sent from my iPhone

On Oct 28, 2019, at 6:41 AM, Sevastyan Savanyuk ***@***.***> wrote:  How to decode base64 to binary file? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub, or unsubscribe.

Got it working. Thanks.

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