我在 spring-boot(2.1.7.RELEASE) 應用程序服務器中遇到問題，該服務器使用 spring-boot-Kafka('spring-Kafka' -'2.2.7.RELEASE') 集成庫來訪問我的 Kafka 主題。當我的 Kafka 代理關閉時，我的應用程序無法啟動。這就是我得到的：2019-10-06 02:41:02.764 WARN -- [main ] org.apache.kafka.clients.NetworkClient [] : [Consumer clientId=consumer-1, groupId=caas] Connection to node -1 could not be established. Broker may not be available.Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.2019-10-06 02:41:31.777 ERROR -- [main ] org.springframework.boot.SpringApplication [] : Application run failedorg.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exception is org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185) at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53) at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360) at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158) at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122) at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:893) at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)有沒有辦法繞過對 Kafka 代理的依賴？即使經(jīng)紀人不可用/關閉，我也希望我的應用程序能夠啟動。一旦代理啟動，應用程序服務器應該能夠連接。
2 回答
弒天下
TA貢獻1818條經(jīng)驗 獲得超8個贊
有一個容器屬性missingTopicsFatal： https://docs.spring.io/spring-kafka/api/org/springframework/kafka/listener/ContainerProperties.html#isMissingTopicsFatal - 即使主題和/或經(jīng)紀人不可用。
@Bean(name = "kafkaListenerContainerFactory")
public ConcurrentKafkaListenerContainerFactory<?, ?> kafkaListenerContainerFactory(
ConsumerFactory<Object, Object> kafkaConsumerFactor,
ConcurrentKafkaListenerContainerFactoryConfigurer configurer) {
ConcurrentKafkaListenerContainerFactory<Object, Object> factory =
new ConcurrentKafkaListenerContainerFactory<>();
configurer.configure(factory, kafkaConsumerFactor);
ContainerProperties containerProperties = factory.getContainerProperties();
containerProperties.setMissingTopicsFatal(false);
...
return factory;
}
慕勒3428872
TA貢獻1848條經(jīng)驗 獲得超6個贊
這是新版本的spring的變化。
@Component
class ContainerFactoryConfigurer {
ContainerFactoryConfigurer(ConcurrentKafkaListenerContainerFactory<?, ?> factory) {
factory.getContainerProperties().setMissingTopicsFatal(false);
}
}
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