【发布时间】：2019-06-23 13:11:04
【问题描述】：
我们在 Spring Boot 应用程序（Spring Boot 2.1.2.RELEASE）中使用 Spring-Kafka 2.2.3.RELEASE，我们在应用程序中定义了一些 kafka 消费者，
@Component
@RefreshScope
@ConditionalOnProperty(prefix = "ord", value = "order-event.messaging.consumer.enabled", havingValue = "true")
public class OrderEventListener {
@KafkaListener(id = "orderEventListener", topics = "#{'${order.consumer.topic}'}")
public void consumeMessageEvent(OrderEvent messageEvent,ConsumerRecord<String, ?> record) {
// do some further processing.
}
}
现在让我们跳到问题，
-
所以当我启动应用程序时，在应用程序启动本身时，它会激活此消费者并尝试连接到代理，但代理未启动并在我的系统中运行，超时后，它会抛出错误
创建名为“scopedTarget.orderEventListener”的 bean 时出错
并显示“应用程序运行失败”并终止进程。
为什么需要代理在启动时启动并运行 申请？
-
之前我们使用的是 Spring Kafka 1.1.8.RELEASE，它曾经在没有启动代理的情况下工作，并且过去正常启动的应用程序。
这是预期的行为吗？所以行为从 1.1.8 版更改为 2.2.3 版？
其他日志，
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.orderEventListener' Initialization of bean failed; nested exception is org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:584) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:356) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:390) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:184) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:353) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1083) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.cloud.context.scope.refresh.RefreshScope.eagerlyInitialize(RefreshScope.java:130) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.cloud.context.scope.refresh.RefreshScope.start(RefreshScope.java:121) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.cloud.context.scope.refresh.RefreshScope.onApplicationEvent(RefreshScope.java:115) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.cloud.context.scope.refresh.RefreshScope.onApplicationEvent(RefreshScope.java:71) ~[spring-cloud-context-2.1.0.RELEASE.jar:2.1.0.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:398) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:355) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:882) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163) ~[spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.4.RELEASE.jar:5.1.4.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.2.RELEASE.jar:2.1.2.RELEASE]
at oal.oracle.apps.ic.coll.ordsbx.Application.main(Application.java:59) [classes/:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_161]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_161]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.2.RELEASE.jar:2.1.2.RELEASE]
Caused by: org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
【问题讨论】：
标签： spring-kafka