Spring boot Kafka未启动时Spring Boot应用程序未启动

我有一个Spring Boot应用程序，里面有卡夫卡消费者和制作人。还有一个bean用于创建主题

e、 g

我的Spring Boot应用程序和卡夫卡都是在库伯内特斯的Docker启动的。有时，Spring Boot应用程序在卡夫卡吊舱启动之前启动，因此无法启动，因为消费者无法连接（请参阅stacktrace）

有没有办法让我的应用程序以弹性的方式启动？例如，消费者应该应对Kafka在启动时或应用程序运行时不在场的情况

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:827)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:629)
    at org.springframework.kafka.core.Def    Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:827)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:629)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:207)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties(DefaultKafkaConsumerFactory.java:193)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:167)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumer(DefaultKafkaConsumerFactory.java:141)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.<init>(KafkaMessageListenerContainer.java:607)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart(KafkaMessageListenerContainer.java:329)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart(ConcurrentMessageListenerContainer.java:176)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfNecessary(KafkaListenerEndpointRegistry.java:312)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.start(KafkaListenerEndpointRegistry.java:257)
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
    ... 59 common frames omitted
Caused by: org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:88)
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:47)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:735)aultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:207)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties(DefaultKafkaConsumerFactory.java:193)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:167)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumer(DefaultKafkaConsumerFactory.java:141)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.<init>(KafkaMessageListenerContainer.java:607)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart(KafkaMessageListenerContainer.java:329)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart(ConcurrentMessageListenerContainer.java:176)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfNecessary(KafkaListenerEndpointRegistry.java:312)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.start(KafkaListenerEndpointRegistry.java:257)
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
    ... 59 common frames omitted
Caused by: org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:88)
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:47)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:735)

原因：org.apache.kafka.common.KafkaException:无法构造kafka使用者
在org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:827）
位于org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:629）
在org.springframework.kafka.core.Def中，由于以下原因导致：org.apache.kafka.common.KafkaException:无法构造kafka使用者
在org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:827）
位于org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:629）
位于org.springframework.kafka.core.DefaultKafkanConsumerFactory.CreateKafkanConsumer（DefaultKafkanConsumerFactory.java:207）
位于org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties（DefaultKafkaConsumerFactory.java:193）
位于org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer（DefaultKafkaConsumerFactory.java:167）
位于org.springframework.kafka.core.DefaultKafkanConsumerFactory.createConsumer（DefaultKafkanConsumerFactory.java:141）
位于org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer。（KafkaMessageListenerContainer.java:607）
位于org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart（KafkaMessageListenerContainer.java:329）
位于org.springframework.kafka.listener.AbstractMessageListenerContainer.start（AbstractMessageListenerContainer.java:340）
位于org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart（ConcurrentMessageListenerContainer.java:176）
位于org.springframework.kafka.listener.AbstractMessageListenerContainer.start（AbstractMessageListenerContainer.java:340）
在org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfEssential上（KafkaListenerEndpointRegistry.java:312）
位于org.springframework.kafka.config.KafkaListenerEndpointRegistry.start（KafkaListenerEndpointRegistry.java:257）
位于org.springframework.context.support.DefaultLifecycleProcessor.doStart（DefaultLifecycleProcessor.java:182）
... 省略59个公共帧
原因：org.apache.kafka.common.config.ConfigException:bootstrap.servers中未提供可解析的引导URL
位于org.apache.kafka.clients.ClientUtils.parseandvalidateAddress（ClientUtils.java:88）
位于org.apache.kafka.clients.ClientUtils.parseandvalidateAddress（ClientUtils.java:47）
在org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:735）aultKafkaConsumerFactory.createKafkaConsumer（DefaultKafkaConsumerFactory.java:207）
位于org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties（DefaultKafkaConsumerFactory.java:193）
位于org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer（DefaultKafkaConsumerFactory.java:167）
位于org.springframework.kafka.core.DefaultKafkanConsumerFactory.createConsumer（DefaultKafkanConsumerFactory.java:141）
位于org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer。（KafkaMessageListenerContainer.java:607）
位于org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart（KafkaMessageListenerContainer.java:329）
位于org.springframework.kafka.listener.AbstractMessageListenerContainer.start（AbstractMessageListenerContainer.java:340）
位于org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart（ConcurrentMessageListenerContainer.java:176）
位于org.springframework.kafka.listener.AbstractMessageListenerContainer.start（AbstractMessageListenerContainer.java:340）
在org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfEssential上（KafkaListenerEndpointRegistry.java:312）
位于org.springframework.kafka.config.KafkaListenerEndpointRegistry.start（KafkaListenerEndpointRegistry.java:257）
位于org.springframework.context.support.DefaultLifecycleProcessor.doStart（DefaultLifecycleProcessor.java:182）
... 省略59个公共帧
原因：org.apache.kafka.common.config.ConfigException:bootstrap.servers中未提供可解析的引导URL
位于org.apache.kafka.clients.ClientUtils.parseandvalidateAddress（ClientUtils.java:88）
位于org.apache.kafka.clients.ClientUtils.parseandvalidateAddress（ClientUtils.java:47）
位于org.apache.kafka.clients.consumer.KafkaConsumer.（KafkaConsumer.java:735）

您可以在侦听器上设置

autostartup=“false”

，然后自己启动它（使用

kafkafkalistenerEndpointRegistry

-给侦听器一个

id

，这样您就可以从注册表中获取对其容器的引用）

如果代理不可用，

KafkaAdmin

将不会创建主题；您还需要调用

KafkaAdmin.initialize（）

：

/**
*调用此方法检查/添加主题；如果没有经纪人，可能需要这样做
*初始化应用程序上下文时可用，并且
*{@link#setFatalIfBrokerNotAvailable（布尔值）fatalIfBrokerNotAvailable}为false，
*或者{@link#setAutoCreate（boolean）autoCreate}被设置为false。
*@成功返回true。
*@see#setFatalIfBrokerNotAvailable（布尔值）
*@see#setAutoCreate（布尔值）
*/
公共最终布尔初始化（）{

您可以在侦听器上设置

autostartup=“false”

，然后自己启动它（使用

kafkafkalistenerEndpointRegistry

——给侦听器一个

id

，这样您就可以从注册表中获取对其容器的引用

Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:827)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:629)
    at org.springframework.kafka.core.Def    Caused by: org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:827)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:629)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:207)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties(DefaultKafkaConsumerFactory.java:193)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:167)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumer(DefaultKafkaConsumerFactory.java:141)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.<init>(KafkaMessageListenerContainer.java:607)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart(KafkaMessageListenerContainer.java:329)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart(ConcurrentMessageListenerContainer.java:176)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfNecessary(KafkaListenerEndpointRegistry.java:312)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.start(KafkaListenerEndpointRegistry.java:257)
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
    ... 59 common frames omitted
Caused by: org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:88)
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:47)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:735)aultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:207)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumerWithAdjustedProperties(DefaultKafkaConsumerFactory.java:193)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createKafkaConsumer(DefaultKafkaConsumerFactory.java:167)
    at org.springframework.kafka.core.DefaultKafkaConsumerFactory.createConsumer(DefaultKafkaConsumerFactory.java:141)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.<init>(KafkaMessageListenerContainer.java:607)
    at org.springframework.kafka.listener.KafkaMessageListenerContainer.doStart(KafkaMessageListenerContainer.java:329)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.listener.ConcurrentMessageListenerContainer.doStart(ConcurrentMessageListenerContainer.java:176)
    at org.springframework.kafka.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:340)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.startIfNecessary(KafkaListenerEndpointRegistry.java:312)
    at org.springframework.kafka.config.KafkaListenerEndpointRegistry.start(KafkaListenerEndpointRegistry.java:257)
    at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
    ... 59 common frames omitted
Caused by: org.apache.kafka.common.config.ConfigException: No resolvable bootstrap urls given in bootstrap.servers
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:88)
    at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:47)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:735)