spring集成kafka运行时报错：Failed to construct kafka producer] with root cause
org.apache.kafka.common.KafkaException: class org.apache.kafka.common.serialization.StringDeserializer is not an instance of org.apache.kafka.common.serialization.Serializer
如图：
![spring集成kafka运行时报错：Failed to construct kafka producer] with root cause](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2023/04/08/29615c4f819343ddbc390a1a857c5185.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAemhhbmdwaGls,size_20,color_FFFFFF,t_70,g_se,x_16 "spring集成kafka运行时报错：Failed to construct kafka producer] with root cause")
解决方案，spring框架里面的kafka的消费者和生产者的key和value解析器用spring支持的，在application.properties配置spring支持的解析器：
spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.StringOrBytesSerializer
spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonSerializer
spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.StringOrBytesSerializer
spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer
