SpringBoot中使用Kafka報錯Error creating bean with name ‘kafkaTemplate‘ defined in class path resource

報錯内容

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-03-01 21:10:40.729 ERROR 27988 --- [           main] o.s.boot.SpringApplication               : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration': Bean instantiation via constructor failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kafkaTemplate' defined in class path resource [org/springframework/boot/autoconfigure/kafka/KafkaAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.kafka.core.KafkaTemplate] from ClassLoader [[email protected]]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:315) ~[spring-beans-5.3.16.jar:5.3.16]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kafkaTemplate' defined in class path resource [org/springframework/boot/autoconfigure/kafka/KafkaAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.kafka.core.KafkaTemplate] from ClassLoader [[email protected]]
	at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:224) ~[spring-beans-5.3.16.jar:5.3.16]
           

原因

Kafka版本過低，SpringBoot版本過高，版本不比對。

解決方案

選用合适的版本，例如：

springboot2.2.x 對應kafka2.3.x和2.4.x 版本

springboot2.3.x 對應kafka2.5.x 版本