How to get response body in Zuul post filter?

Question

How it is possible to read a response body while using Zuul as a proxy in post filter?

I am trying to call the code like this:

@Componen         


        

Answer 1

I've managed to overcome this. The solution consists of 4 steps:

1. Read ctx.getResponseDataStream() into a ByteArrayOutputStream
2. Copy OutputStream to 2 InputStreams.
3. Use one of it for your custom purposes.
4. Use the second to reassign to context: context.setResponseBody(inputStream)
   • reading stream from point 1 would cause that the stream cannot be read again, so this way you're passing a new fresh stream that wasn't read yet