Eureka客户端无法连接服务注册中心

服务端

application.yml配置

​​
​​

​​
​​

​​spring:​​

​​
​​

​​
​​

​​ application:​​

​​
​​

​​
​​

​​ name: eureka-service​​

​​
​​

​​
​​

​​eureka: ​​

​​
​​

​​
​​

​​ client:​​

​​
​​

​​
​​

​​ fetch-registry: 'false'​ ​

​​
​​

​​
​​

​​ register-with-eureka: 'false'​ ​

​​
​​

​​
​​

​​ server:​​

​​
​​

​​
​​

​​ enable-self-preservation: false​​

​​
​​

​​
​​

​​ eviction-interval-timer-in-ms: 100​ ​

​​
​​

​​
​​

​​#eureka服务器端口​​

​​
​​

​​
​​

​​server:​​

​​
​​

​​
​​

​​ port: '21001'​ ​

​​
​​

EurekaApplication.java

​​
​​

​​
​​

​​package org.gradle;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​import org.springframework.boot.SpringApplication;​ ​

​​
​​

​​
​​

​​import org.springframework.boot.autoconfigure.SpringBootApplication;​ ​

​​
​​

​​
​​

​​import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​@EnableEurekaServer //作为服务端注解 ​ ​

​​
​​

​​
​​

​​@SpringBootApplication​​

​​
​​

​​
​​

​​public class EurekaApplication {​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​ public static void main(String[] args) throws Exception {​​

​​
​​

​​
​​

​​ SpringApplication.run(EurekaApplication.class, args);​​

​​
​​

​​
​​

​​ }​​

​​
​​

​​
​​

​​
​​

​​
​​

​​}​​

​​
​​

客户端

application.yml

​​
​​

​​
​​

​​server:​​

​​
​​

​​
​​

​​ port: '21002'​ ​

​​
​​

​​
​​

​​eureka:​​

​​
​​

​​
​​

​​ client:​​

​​
​​

​​
​​

​​ serviceUrl:​​

​​
​​

​​
​​

​​ defaultZone: http://服务端ip:21001/eureka/​​

​​
​​

​​
​​

​​ instance:​​

​​
​​

​​
​​

​​ instance-id: test-client​​

​​
​​

​​
​​

​​ hostname: cloud-provider​​

​​
​​

​​
​​

​​ preferIpAddress: true​ ​

​​
​​

​​
​​

​​ ip-address: 客户端ip​​

​​
​​

​​
​​

​​spring: ​​

​​
​​

​​
​​

​​ application: ​​

​​
​​

​​
​​

​​ name: test-client​​

​​
​​

​​
​​

​​ http:​​

​​
​​

​​
​​

​​ encoding:​​

​​
​​

​​
​​

​​ force: true​ ​

​​
​​

​​
​​

​​ charset: UTF-8​​

​​
​​

​​
​​

​​ enabled: true​ ​

​​
​​

主入口类Application.java

​​
​​

​​
​​

​​package org.gradle;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​import org.springframework.boot.SpringApplication;​ ​

​​
​​

​​
​​

​​import org.springframework.boot.autoconfigure.SpringBootApplication;​ ​

​​
​​

​​
​​

​​import org.springframework.cloud.client.discovery.EnableDiscoveryClient;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​@EnableDiscoveryClient​​

​​
​​

​​
​​

​​@SpringBootApplication​​

​​
​​

​​
​​

​​public class ApplicationClient {​ ​

​​
​​

​​
​​

​​ public static void main(String[] args) throws Exception {​​

​​
​​

​​
​​

​​ SpringApplication.run(ApplicationClient.class, args);​​

​​
​​

​​
​​

​​ }​​

​​
​​

​​
​​

​​}​​

​​
​​

Controller类Person.java

​​
​​

​​
​​

​​package org.gradle;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​import org.springframework.web.bind.annotation.RequestMapping;​ ​

​​
​​

​​
​​

​​import org.springframework.web.bind.annotation.RestController;​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​@RestController​ ​

​​
​​

​​
​​

​​public class Person {​​

​​
​​

​​
​​

​​ @RequestMapping("/getName")​​

​​
​​

​​
​​

​​ public String getName() {​​

​​
​​

​​
​​

​​ return "hello eureka";​​

​​
​​

​​
​​

​​ }​​

​​
​​

​​
​​

​​}​​

​​
​​

eureka的服务注册中心可以正常启动起来，在启动客户端的服务的时候无法连接上注册中心。

部分报错信息如下：

​​
​​

​​
​​

​​2018-10-18 17:23:42.727 INFO 7852 --- [ main] com.netflix.discovery.DiscoveryClient : Application is null : false ​ ​

​​
​​

​​
​​

​​2018-10-18 17:23:42.727 INFO 7852 --- [ main] com.netflix.discovery.DiscoveryClient : Registered Applications size is zero : true ​ ​

​​
​​

​​
​​

​​2018-10-18 17:23:42.727 INFO 7852 --- [ main] com.netflix.discovery.DiscoveryClient : Application version is -1: true ​ ​

​​
​​

​​
​​

​​2018-10-18 17:23:42.727 INFO 7852 --- [ main] com.netflix.discovery.DiscoveryClient : Getting all instance registry info from the eureka server​ ​

​​
​​

​​
​​

​​2018-10-18 17:23:44.792 ERROR 7852 --- [ main] c.n.d.s.t.d.RedirectingEurekaHttpClient : Request execution error​ ​

​​
​​

​​
​​

​​
​​

​​
​​

​​com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused: connect​​

​​
​​

​​
​​

​​ at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:187) ~[jersey-apache-client4-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:123) ~[jersey-client-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:27) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.sun.jersey.api.client.Client.handle(Client.java:652) ~[jersey-client-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.sun.jersey.api.client.WebResource.handle(WebResource.java:682) ~[jersey-client-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:509) ~[jersey-client-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.getApplicationsInternal(AbstractJerseyEurekaHttpClient.java:194) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.getApplications(AbstractJerseyEurekaHttpClient.java:165) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79) ~[eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:119) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$6.execute(EurekaHttpClientDecorator.java:137) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.getApplications(EurekaHttpClientDecorator.java:134) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:1022) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:936) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:412) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at com.netflix.discovery.DiscoveryClient.<init>(DiscoveryClient.java:267) [eureka-client-1.7.0.jar:1.7.0]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.CloudEurekaClient.<init>(CloudEurekaClient.java:61) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration.eurekaClient(EurekaClientAutoConfiguration.java:261) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration$$EnhancerBySpringCGLIB$$5d9ea2ca.CGLIB$eurekaClient$0(<generated>) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration$$EnhancerBySpringCGLIB$$5d9ea2ca$$FastClassBySpringCGLIB$$1d2b2b2c.invoke(<generated>) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) [spring-core-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.EurekaClientAutoConfiguration$RefreshableEurekaClientConfiguration$$EnhancerBySpringCGLIB$$5d9ea2ca.eurekaClient(<generated>) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:345) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:379) [spring-cloud-context-1.3.0.RELEASE.jar:1.3.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:181) [spring-cloud-context-1.3.0.RELEASE.jar:1.3.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:340) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) [spring-beans-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35) [spring-aop-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getTargetObject(EurekaRegistration.java:166) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaRegistration.getEurekaClient(EurekaRegistration.java:155) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.maybeInitializeClient(EurekaServiceRegistry.java:56) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaServiceRegistry.register(EurekaServiceRegistry.java:37) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.cloud.netflix.eureka.serviceregistry.EurekaAutoServiceRegistration.start(EurekaAutoServiceRegistration.java:80) [spring-cloud-netflix-eureka-client-1.4.0.RELEASE.jar:1.4.0.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:175) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:50) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:348) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:151) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:114) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:880) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.finishRefresh(EmbeddedWebApplicationContext.java:144) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) [spring-context-4.3.13.RELEASE.jar:4.3.13.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.9.RELEASE.jar:1.5.9.RELEASE]​​

​​
​​

​​
​​

​​ at org.gradle.ApplicationClient.main(ApplicationClient.java:11) [bin/:na]​​

​​
​​

​​
​​

​​Caused by: java.net.ConnectException: Connection refused: connect​​

​​
​​

​​
​​

​​ at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_151]​​

​​
​​

​​
​​

​​ at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:121) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.3.jar:4.5.3]​​

​​
​​

​​
​​

​​ at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:173) ~[jersey-apache-client4-1.19.1.jar:1.19.1]​​

​​
​​

​​
​​

​​ ... 68 common frames omitted​​

​​
​​

通过网上搜索，大部分的回答如下几种

    一、客户端配置文件中关键字需准守驼峰命名方式

​​
​​

​​
​​

​​eureka:​​

​​
​​

​​
​​

​​ client:​​

​​
​​

​​
​​

​​ serviceUrl:​​

​​
​​

​​
​​

​​ defaultZone: http://localhost:21001/eureka/​ ​

​​
​​

上述代码中的serviceUrl不应使用service-url，defaultZone不应使用default-zone

    二、eureka服务端应关闭鉴权

        需要在服务器端的配置文件中加入关闭鉴权的代码

​​
​​

​​
​​

​​security: ​​

​​
​​

​​
​​

​​ basic: ​​

​​
​​

​​
​​

​​ enabled: false​ ​

​​
​​

    三、如果启动eureka服务端报这种错误，则需要禁止服务端作为客户端注册。默认情况下eureka的服务注册中心会将自己作为客户端来尝试注册。

        需要在服务端的配置文件中加入禁止注册的代码

​​
​​

​​
​​

​​eureka: ​​

​​
​​

​​
​​

​​ client:​​

​​
​​

​​
​​

​​ fetch-registry: 'false'​ ​

​​
​​

​​
​​

​​ register-with-eureka: 'false'​ ​