Avro 架构对象通用 kafkaTemplate 类型 - 生成消息

Question

I have situation where my kafka template looks like this:

KafkaTemplate<String, InternalSelfServiceData> kafkaTemplate;

Where: InternalSelfServiceData -> Avro schema object

When i call kafkaTemplate.send() my return type is ListenableFuture<SendResult<String, InternalSelfServiceData>> . Next i pass this data as a parametr to the next method but i want this method to be generic one so i wanted from them to accept parameter like this ListenableFuture<SendResult<String, ? extends SpecificRecordBase>> ListenableFuture<SendResult<String, ? extends SpecificRecordBase>> .

The error that occurs in IntelliJ is:

Required type: ListenableFuture <SendResult<String, ? extends SpecificRecordBase>>

Provided: ListenableFuture <SendResult<String, InternalSelfServiceData>

Any suggestion what I missing?

Answer 1

尝试将您的数据编码为字节数组（org.apache.avro.specific.SpecificDatumWriter）