KafkaException: class is not an instance of org.apache.kafka.common.serialization.Deserializer

Question

I want to implement Kafka producer which sends and receives Java Serialized Objects. I tried this:

Producer:

@Configuration
publi         


        

Answer 1

KEY_DESERIALIZER_CLASS_CONFIG is a class which deserializes the network value into proper Java classes. The class you provided doesn't do that.

In most cases, StringDeserializer is used. Specify a proper deserializer to the factory properties.