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使用openfeign依赖启动服务时报错

工程micro-weather-eureka-client-feign 启动报错


Maven，pom配置

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.0.M3</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring.cloud.version>Finchley.M2</spring.cloud.version>
	</properties>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring.cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

	<dependencies>
	
		<!-- Feign -->
		<dependency> 
			<groupId>org.springframework.cloud</groupId> 
			<artifactId>spring-cloud-starter-openfeign</artifactId> 
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

Application启动类注解：

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class Application {

	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}
}

application.properties配置：

spring.application.name=micro-weather-eureka-client-feign

eureka.client.service-url.defaultZone=http://localhost:8761/eureka

feign.client.config.feignName.connect-timeout=5000

feign.client.config.feignName.read-timeout=5000

server.port=8082

启动时错误信息：

java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.openfeign.ribbon.FeignRibbonClientAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@764c12b6]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:728) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:670) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:638) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1507) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:421) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:391) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:97) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:693) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.yao.spring.cloud.Application.main(Application.java:15) [classes/:na]
Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/client/loadbalancer/LoadBalancedRetryFactory
	at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_161]
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source) ~[na:1.8.0_161]
	at java.lang.Class.getDeclaredMethods(Unknown Source) ~[na:1.8.0_161]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	... 19 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.client.loadbalancer.LoadBalancedRetryFactory
	at java.net.URLClassLoader.findClass(Unknown Source) ~[na:1.8.0_161]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	... 23 common frames omitted

2018-03-27 17:08:06.878  INFO 5888 --- [           main] ConfigServletWebServerApplicationContext : Closing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1477089c: startup date [Tue Mar 27 17:08:06 CST 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@4c178a76
2018-03-27 17:08:06.879  WARN 5888 --- [           main] ConfigServletWebServerApplicationContext : Exception thrown from LifecycleProcessor on context close

java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1477089c: startup date [Tue Mar 27 17:08:06 CST 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@4c178a76
	at org.springframework.context.support.AbstractApplicationContext.getLifecycleProcessor(AbstractApplicationContext.java:433) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1004) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:963) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:808) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.yao.spring.cloud.Application.main(Application.java:15) [classes/:na]

2018-03-27 17:08:06.879 ERROR 5888 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Destroy method on bean with name 'org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory' threw an exception

java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1477089c: startup date [Tue Mar 27 17:08:06 CST 2018]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@4c178a76
	at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:420) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.ApplicationListenerDetector.postProcessBeforeDestruction(ApplicationListenerDetector.java:95) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:240) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:582) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:558) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:952) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:527) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.destroySingletons(FactoryBeanRegistrySupport.java:228) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:959) [spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1035) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1011) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:963) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:808) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.yao.spring.cloud.Application.main(Application.java:15) [classes/:na]

2018-03-27 17:08:06.880  WARN 5888 --- [           main] o.s.boot.SpringApplication               : Unable to close ApplicationContext

java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.openfeign.ribbon.FeignRibbonClientAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@764c12b6]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:659) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:556) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:541) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.util.ReflectionUtils.getUniqueDeclaredMethods(ReflectionUtils.java:599) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryMethod(AbstractAutowireCapableBeanFactory.java:728) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:670) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:638) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1507) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:421) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:391) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:511) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:504) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.getBeansOfType(AbstractApplicationContext.java:1191) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.SpringApplication.getExitCodeFromMappedException(SpringApplication.java:879) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.getExitCodeFromException(SpringApplication.java:865) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.handleExitCode(SpringApplication.java:851) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:802) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.yao.spring.cloud.Application.main(Application.java:15) [classes/:na]
Caused by: java.lang.NoClassDefFoundError: org/springframework/cloud/client/loadbalancer/LoadBalancedRetryFactory
	at java.lang.Class.getDeclaredMethods0(Native Method) ~[na:1.8.0_161]
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source) ~[na:1.8.0_161]
	at java.lang.Class.getDeclaredMethods(Unknown Source) ~[na:1.8.0_161]
	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:641) ~[spring-core-5.0.0.RC3.jar:5.0.0.RC3]
	... 20 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.client.loadbalancer.LoadBalancedRetryFactory
	at java.net.URLClassLoader.findClass(Unknown Source) ~[na:1.8.0_161]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_161]
	... 24 common frames omitted

我怀疑是在网络下载相关jar依赖时某些jar没下载下来，或者某些jar的版本冲突的。能麻烦老师帮忙看一下是什么问题吗？
yao314 2018-03-27 17:21:34
源自：7-5  天气数据采集微服务使用Feign
1803
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2回答

老卫 回答被采纳获得+3积分 2018-03-27 20:08:28

你参考讲师的配置做下对应的修改：

// buildscript 代码块中脚本优先执行
buildscript {

	// ext 用于定义动态属性
	ext {
		springBootVersion = '2.0.0.M3'
	}

	// 使用了Maven的中央仓库及Spring自己的仓库（也可以指定其他仓库）
	repositories {
		//mavenCentral()
		maven { url "https://repo.spring.io/snapshot" }
		maven { url "https://repo.spring.io/milestone" }
		maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
	}

	// 依赖关系
	dependencies {

		// classpath 声明了在执行其余的脚本时，ClassLoader 可以使用这些依赖项
		classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
	}
}

// 使用插件
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'

// 指定了生成的编译文件的版本，默认是打成了 jar 包
group = 'com.waylau.spring.cloud'
version = '1.0.0'

// 指定编译 .java 文件的 JDK 版本
sourceCompatibility = 1.8

// 使用了Maven的中央仓库及Spring自己的仓库（也可以指定其他仓库）
repositories {
	//mavenCentral()
	maven { url "https://repo.spring.io/snapshot" }
	maven { url "https://repo.spring.io/milestone" }
	maven { url "http://maven.aliyun.com/nexus/content/groups/public/" }
}

ext {
	springCloudVersion = 'Finchley.M2'
}

dependencies {

	// 添加  Spring Cloud Starter Netflix Eureka Client 依赖
	compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
	
	// 添加 Spring Cloud Starter OpenFeig Finchley.M2 依赖
	compile('org.springframework.cloud:spring-cloud-starter-openfeign')

	// 该依赖用于测试阶段
	testCompile('org.springframework.boot:spring-boot-starter-test')
}

dependencyManagement {
	imports {
		mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
	}
}


0 回复 有任何疑惑可以回复我~
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  • 提问者 yao314 #1 
    感谢老师的耐心解答
    回复 有任何疑惑可以回复我~ 2018-03-28 09:44:49
  • 提问者 yao314 #2 
    非常感谢！
    回复 有任何疑惑可以回复我~ 2018-03-28 15:20:48
  • 3333CR7_0 回复 提问者 yao314 #3 
    Hi 同学，feign启动报同样的错误，请问你最后怎么解决的？
    回复 有任何疑惑可以回复我~ 2018-04-24 19:45:57
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老卫 2018-03-28 13:22:20

如果解决了，请采纳答案

0 回复 有任何疑惑可以回复我~
收起回答
  • 3333CR7_0 #1 
    老师， 同样的问题报错， 配置是按教程版本写的
java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.openfeign.ribbon.FeignRibbonClientAutoConfiguration] from ClassLoader [sun.misc.Launcher$AppClassLoader@5c647e05]
    回复 有任何疑惑可以回复我~ 2018-04-24 11:27:46
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