Base64 Decoder With Groovy Script

[mark_fryu]

hello all, can someone provide me a groovy script that allows to do the base64 Decoder?

It must do the same thing that the standard block does:

but I need a groovy script code because I only need to change part of the payload

thank you

[Distinct_Sky]

Can you split the data between what needs to be encoded and what not?

[mark_fryu]

hi @Distinct_Sky 

yes I can, but the part to be decoded is in the middle, at the beginning and at the end there are parts that must not be decoded. For this reason if I use the standard block "Base64 Decoder" it goes into error

[UserID276461]

// Groovy Function to decode Base64 input to String def base64Decode(encodedString){ byte[] decoded = encodedString.decodeBase64() String decode = new String(decoded) return decode } https://veereshkumarn.medium.com/groovy-base64-encode-decode-input-string-9749072a92da

[Distinct_Sky]

In that case, I would suggest to do it in the field level Message mapping. The below code is for SAP PI, but can be used in CPI as well.

Solved: Decode Base64 at field level! - SAP Community

[mark_fryu]

hi @Distinct_Sky 

I tried but I get this error:

This is my payload:

This is the groovy script: