我正在尝试在我的项目中使用 Spring Kafka,其中 spring boot 版本是 2.2.2.RELEASE,kafka 版本是 2.3.x。
implementation 'org.springframework.kafka:spring-kafka'
我有我的 KafkaConfig 类和 Listener 类设置:
@EnableKafka
@Configuration
public class KafkaConfig {
Config cfg = new Config();
@Bean
public ConsumerFactory<String, String> consumerFactory() {
Map<String, Object> props = new HashMap<>();
props.put(
ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG,
cfg.getProperty("server"));
props.put(
ConsumerConfig.GROUP_ID_CONFIG,
UUID.randomUUID());
props.put(
ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
StringDeserializer.class);
props.put(
ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,
StringDeserializer.class);
return new DefaultKafkaConsumerFactory<>(props);
}
@Bean
public ConcurrentKafkaListenerContainerFactory<String, String> kafkaListenerContainerFactory() {
ConcurrentKafkaListenerContainerFactory<String, String> factory = new ConcurrentKafkaListenerContainerFactory();
factory.setConsumerFactory(consumerFactory());
return factory;
}
}
KafkaConsumer.java
@Service
public class KafkaConsumer {
private final Logger LOG = LoggerFactory
.getLogger(KafkaConsumer.class);
@KafkaListener(topics = "anomaly-topic")
void listener(String message) {
LOG.info("Listener [{}]", message);
}
}
当我尝试运行我的应用程序时,出现以下异常:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spring.kafka-org.springframework.boot.autoconfigure.kafka.KafkaProperties': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.boot.autoconfigure.kafka.KafkaProperties]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/kafka/common/requests/IsolationLevel
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:798) ~[spring-beans-5.2.2.RELEASE.jar:5.2.2.RELEASE]
最佳答案
我发现解决这个问题的方法是禁用 KafkaAutoConfiguration.class,
@SpringBootApplication(exclude = KafkaAutoConfiguration.class)
关于java - Spring Kafka 找不到 Kafka Properties Bean,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/64481838/