JacksonSerializationExample.java

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.SneakyThrows;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class JacksonSerializationExample {
    @SneakyThrows
    public static void main(String[] args) {
        ObjectMapper objectMapper = new ObjectMapper();

        byte[] serialized = serialize(objectMapper.readTree("{\"a\": true, \"b\":[1,2,3]}"));
        JsonNode deserialized = deserialize(serialized);

        System.out.println(deserialized.get("b"));
    }

    @SneakyThrows
    private static <T> T deserialize(byte[] serialized) {
        try (ObjectInputStream is = new ObjectInputStream(new ByteArrayInputStream(serialized))) {
            @SuppressWarnings("unchecked")
            T cast = (T) is.readObject();
            return cast;
        }

    }

    @SneakyThrows
    private static byte[] serialize(JsonNode jsonNode) {
        try (ByteArrayOutputStream bytes = new ByteArrayOutputStream();
             ObjectOutputStream stream = new ObjectOutputStream(bytes)) {

            stream.writeObject(jsonNode);
            return bytes.toByteArray();
        }
    }
}