How can I serialize/deserialize java.util.stream.Stream using Jackson?

Question

Assuming I have the following object

public class DataObjectA {
    private Stream<DataObjectB> dataObjectBStream;
}

How can I serialize them using Jackson?

Answer 1

As others have pointed out, you can only iterate once over a stream. If that works for you, you can use this to serialize:

new ObjectMapper().writerFor(Iterator.class).writeValueAsString(dataObjectBStream.iterator())

If you're using a Jackson version prior to 2.5, use writerWithType() instead of writerFor().