package com.example.kafkanativeserialization; import org.apache.kafka.common.header.Headers; import org.springframework.kafka.support.serializer.JsonSerializer; import org.springframework.lang.Nullable; public class MyJsonSerializer extends JsonSerializer { @Override @Nullable public byte[] serialize(String topic, Headers headers, @Nullable Object data) { return super.serialize(topic, headers, data); } @Override @Nullable public byte[] serialize(String topic, @Nullable Object data) { return super.serialize(topic, data); } }