Springboot整合Kafka报错【No type information in headers and no default type provided】

这个是消费数据格式和发送数据格式不一致转换失败导致

原配置文件

spring:
  kafka:
    bootstrap-servers: 127.0.0.1:9092
    producer:
      acks: 1
      retries: 3
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
    consumer:
      auto-offset-reset: earliest
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer

如果去消费字符串类型的数据，就会报这个错误，修改下配置

spring:
  kafka:
    bootstrap-servers: 127.0.0.1:9092
    producer:
      acks: 1
      retries: 3
      key-serializer: org.apache.kafka.common.serialization.StringSerializer
      value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
    consumer:
      auto-offset-reset: earliest
      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer

问题解决，只要发送端和消费端数据格式一致即可，根据实际情况修改配置