Eureka服务搭建

创建一个Spring Boot项目，并再pom文件中加入相关依赖。<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId&am

何事忧愁

1843人浏览 · 2018-09-19 16:19:57

何事忧愁 · 2018-09-19 16:19:57 发布

创建一个Spring Boot项目，并再pom文件中加入相关依赖。

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.5.RELEASE</version>
		<relativePath/>
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
	</properties>
	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>Finchley.SR1</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
		    <groupId>org.springframework.cloud</groupId>
		    <artifactId>spring-cloud-starter-eureka-server</artifactId>
		    <version>1.4.5.RELEASE</version>
		</dependency>
		
	</dependencies>

这里我使用的是Spring Boot 2.0.5.RELEASE版本，spring cloud使用Finchley.SR1。

接下来配置application.properties

server.port=10000
eureka.instance.hostname=localhost
eureka.client.fetch-registry=false
eureka.client.register-with-eureka=false
eureka.client.service-url.defaultZone=http://${localhost}:{server.port}/eureka

server.port=10000 //表示项目启动的端口
eureka.instance.hostname=localhost //项目的hostname
eureka.client.fetch-registry=false //表示是否检索服务
eureka.client.register-with-eureka=false //表示是否向注册中心注册自己
eureka.client.service-url.defaultZone=http://${localhost}:{server.port}/eureka //设置默认的zone地址

这时我们启动项目；发现报一下异常：

2018-09-19 16:10:51.616  WARN 2076 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.netflix.archaius.ArchaiusAutoConfiguration': Unsatisfied dependency expressed through field 'externalConfigurations'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'configurableEnvironmentConfiguration' defined in class path resource [org/springframework/cloud/netflix/archaius/ArchaiusAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.commons.configuration.AbstractConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
Related cause: org.springframework.beans.factory.BeanCurrentlyInCreationException: Error creating bean with name 'configurableEnvironmentConfiguration': Requested bean is currently in creation: Is there an unresolvable circular reference?
2018-09-19 16:10:51.620  INFO 2076 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2018-09-19 16:10:51.642  INFO 2076 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-09-19 16:10:51.657 ERROR 2076 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.cloud.netflix.archaius.ArchaiusAutoConfiguration': Unsatisfied dependency expressed through field 'externalConfigurations'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'configurableEnvironmentConfiguration' defined in class path resource [org/springframework/cloud/netflix/archaius/ArchaiusAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.commons.configuration.AbstractConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:586) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1341) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:572) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1277) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]
	at cn.qinglanglu.eureka.ShopEurekaApplication.main(ShopEurekaApplication.java:12) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'configurableEnvironmentConfiguration' defined in class path resource [org/springframework/cloud/netflix/archaius/ArchaiusAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.apache.commons.configuration.AbstractConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:550) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.addCandidateEntry(DefaultListableBeanFactory.java:1322) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1288) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveMultipleBeans(DefaultListableBeanFactory.java:1190) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1093) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1062) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:583) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 19 common frames omitted
Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.apache.commons.configuration.AbstractConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@18b4aac2]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:519) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:208) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:189) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(InitDestroyAnnotationBeanPostProcessor.java:128) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:297) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1013) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 31 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/lang/text/StrLookup
	at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_171]
	at java.lang.ClassLoader.defineClass(Unknown Source) ~[na:1.8.0_171]
	at java.security.SecureClassLoader.defineClass(Unknown Source) ~[na:1.8.0_171]
	at java.net.URLClassLoader.defineClass(Unknown Source) ~[na:1.8.0_171]
	at java.net.URLClassLoader.access$100(Unknown Source) ~[na:1.8.0_171]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[na:1.8.0_171]
	at java.net.URLClassLoader$1.run(Unknown Source) ~[na:1.8.0_171]
	at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_171]
	at java.net.URLClassLoader.findClass(Unknown Source) ~[na:1.8.0_171]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_171]
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source) ~[na:1.8.0_171]
	at java.lang.Class.getDeclaredMethods(Unknown Source) ~[na:1.8.0_171]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE]
	... 38 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang.text.StrLookup
	at java.net.URLClassLoader.findClass(Unknown Source) ~[na:1.8.0_171]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_171]
	... 54 common frames omitted

网上有的说是spring boot与spring cloud版本冲突问题。spring boot与spring cloud版本对应关系：

Spring Cloud	Spring Boot
Finchley	兼容Spring Boot 2.0.x，不兼容Spring Boot 1.5.x
Dalston和Edgware	兼容Spring Boot 1.5.x，不兼容Spring Boot 2.0.x
Camden	兼容Spring Boot 1.4.x，也兼容Spring Boot 1.5.x
Brixton	兼容Spring Boot 1.3.x，也兼容Spring Boot 1.4.x
Angel	兼容Spring Boot 1.2.x

但我们这里已经是finchley版本了，显然不是版本冲突问题。

认真观察异常信息，是说没有找到org.apache.commons.lang包下的一个类，于是找了一下，项目中根本就没有commons-lang包，于是把commons-lang的依赖加入：

		<dependency>
			<groupId>commons-lang</groupId>
			<artifactId>commons-lang</artifactId>
			<version>2.6</version>
		</dependency>

然后启动正常，访问地址：http://localhost:10000/

搞定！

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