因为Eureka在集群启动过程中,会连接集群中其他的机器进行数据同步,在这个过程中,如果别的服务还没有启动完成,就会出现 Connection refused: connect
error,当其他节点启动完成之后,报错就会消失。
2019-08-16 10:27:57.038 ERROR 73180 --- [ main] o.s.boot.SpringApplication : Application run failed java.lang.IllegalStateException: Failed to introspect Class [org.springframework.boot.autoconfigure.kafka.KafkaAnnotationDrivenConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2] at org.springframework.util.ReflectionUtils.getDeclaredFields(ReflectionUtils.java:760) ~[spring-core-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:725) ~[spring-core-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:710) ~[spring-core-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.boot.test.mock.mockito.DefinitionsParser.parse(DefinitionsParser.java:62) ~[spring-boot-test-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.boot.test.mock.mockito.MockitoPostProcessor.postProcessBeanFactory(MockitoPostProcessor.java:141) ~[spring-boot-test-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.boot.test.mock.mockito.MockitoPostProcessor.postProcessBeanFactory(MockitoPostProcessor.java:133) ~[spring-boot-test-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:286) ~[spring-context-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:174) ~[spring-context-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[spring-context-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[spring-boot-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[spring-boot-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:127) [spring-boot-test-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:117) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:108) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.boot.test.autoconfigure.SpringBootDependencyInjectionTestExecutionListener.prepareTestInstance(SpringBootDependencyInjectionTestExecutionListener.java:44) [spring-boot-test-autoconfigure-2.1.5.RELEASE.jar:2.1.5.RELEASE] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:246) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:246) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12] at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12] at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12] at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) [spring-test-5.1.7.RELEASE.jar:5.1.7.RELEASE] at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12] at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) [junit-rt.jar:na] at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) [junit-rt.jar:na] at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) [junit-rt.jar:na] at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70) [junit-rt.jar:na] Caused by: java.lang.NoClassDefFoundError: Lorg/springframework/kafka/listener/AfterRollbackProcessor; at java.lang.Class.getDeclaredFields0(Native Method) ~[na:1.8.0_171] at java.lang.Class.privateGetDeclaredFields(Class.java:2583) ~[na:1.8.0_171] at java.lang.Class.getDeclaredFields(Class.java:1916) ~[na:1.8.0_171] at org.springframework.util.ReflectionUtils.getDeclaredFields(ReflectionUtils.java:755) ~[spring-core-5.1.7.RELEASE.jar:5.1.7.RELEASE] ... 40 common frames omitted Caused by: java.lang.ClassNotFoundException: org.springframework.kafka.listener.AfterRollbackProcessor at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_171] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_171] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) ~[na:1.8.0_171] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_171] ... 44 common frames omitted 2019-08-16 10:27:57.119 INFO 73180 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$2c3f141a] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
查看这个错误,是在加载 org.springframework.kafka.listener.AfterRollbackProcessor
的时候,没有找到对应的class,可是我们明明添加了依赖呀?
<!-- kafka 依赖 --> <dependency> <groupId>org.springframework.kafka</groupId> <artifactId>spring-kafka</artifactId> <version>2.1.5.RELEASE</version> </dependency>
ok, 我们来查询,首先,在实际工作中,大家为了最快的解决问题,必须借助搜索引擎的力量,作为一个合格的程序猿,尽量少baidu....我一般习惯 https://cn.bing.com/ ,搜索相关报错,可以看到第一个就是程序界的错误大佬,
stackworkflow
解决bug传送门
.
说的非常清楚:
2.0.x
is not compatible with Spring Boot 2.1.x
. You have to use Spring-Kafka 2.2.x
. More over would be better to just rely on the dependency from Spring Boot per se. please, see https://start.spring.io/
for more info how properly start the project for Spring Boot.
And please, don’t duplicate your question in different places if that was not asked.
错误说明,在 org.springframework.kafka
,因为我们使用的springboot 版本是 2.1.5.RELEASE
,所以版本存在差异化,因此我们修改版本为:
<!-- kafka 依赖 --> <dependency> <groupId>org.springframework.kafka</groupId> <artifactId>spring-kafka</artifactId> <version>2.2.8.RELEASE</version> </dependency>
再次启动,一切ok。