文章目录

1.概述
- 1.1.官方概述地址
- 1.2.官方源码地址
- 1.3.官方Eureka ServerDemo地址
- 1.4.概述理解
- - 1.4.1.Eureka是Netflix公司开源的一个服务发现组件
  - 1.4.2.首先Eureka是一个服务注册与服务发现的中间组件:相当于Dubbo
  - 1.4.3.Eureka架构组成
  - - 1.4.3.1.Eureka-Server：我们可以认为就是服务的注册中心(Register)
    - 1.4.3.2.Eureka-Client：服务提供者(Provider)和服务消费者(Consumer)
    - 1.4.3.3.架构调用流程(High level architecture 高可用架构)
    - - 1.4.3.3.1.注册中心：Eureka-Server
      - 1.4.3.3.2.服务发布者：Eureka-Client(Application-Service)
      - 1.4.3.3.3.服务消费者：Eureka-Client(Application-Client)
  - 1.4.4.Eureka是是一个基于REST的服务，主要用于定位运行在应用域中的中间层服务
2.Demo 应用样例
- 2.1.Eureka Server注册中心搭建
- - 2.1.1.创建项 [demo-spring-cloud-netflix-eureka-server]
  - 2.1.2.引入Eureka Server 版本
  - 2.1.3.定义application.yml
  - 2.1.4.定义bootstrap.yml
  - 2.1.5.创建启动Java
  - 2.1.16.启动控台
- 2.2.Eureka Server-服务发布者
- - 2.2.1.创建项目[demo-spring-cloud-netflix-eureka-provider]
  - 2.2.2.引入jar包版本
  - 2.2.3.定义application.properties
  - 2.2.4.创建启动Java
  - 2.2.5.启动验证问题：provider启动了之后立刻死掉了
  - 2.2.6.问题解决:引入spring-boot-starter-web包
  - 2.2.7.再次启动验证-启动成功-查看eureka-server注册中心
  - 2.2.8.我们在服务端provider项目中创建一个Controller
  - - 2.2.8.1.HelloController
    - 2.2.8.2.页面测试:直接验证服务端服务是否正常
- 2.3.Eureka Client-服务消费者
- 2.4.项目源码

1.概述

1.1.官方概述地址

https://spring.io/projects/spring-cloud-netflix

1.2.官方源码地址

https://github.com/Netflix/eureka

1.3.官方Eureka ServerDemo地址

https://github.com/spring-cloud-samples/eureka

1.4.概述理解

1.4.1.Eureka是Netflix公司开源的一个服务发现组件

1.实际上Netflix开源了好多组件，Eureka只是其中的一个，大家可以查看GitHub上面的相关开源项目,

https://github.com/Netflix

1.4.2.首先Eureka是一个服务注册与服务发现的中间组件:相当于Dubbo

1.在微服务架构系统之中，我们经常提三个角色：1.1.注册中心  (Register):服务发布者将服务发布到注册中心，服务消费者从注册中心获取可以进行访问的服务列表;1.2.服务提供者(Provider)：需要发布服务的应用1.3.服务消费者(Consumer):需要访问服务的应用

1.4.3.Eureka架构组成

1.4.3.1.Eureka-Server：我们可以认为就是服务的注册中心(Register)

1.4.3.2.Eureka-Client：服务提供者(Provider)和服务消费者(Consumer)

1.4.3.3.架构调用流程(High level architecture 高可用架构)

1.4.3.3.1.注册中心：Eureka-Server

1.首先，我们可以看到上面注册中心使用了集群部署：us-east-1c，us-east-1d，us-east-1e(美国东部1c，1d，1e注册中心)
2.集群中的机器，数据会进行同步复制更新(replicate)，保证注册中心数据最终一致性;

1.4.3.3.2.服务发布者：Eureka-Client(Application-Service)

1.服务发布者，即下游相关的平台或者是提供服务的应用，对于自己的应用服务(Application Service)，做下面的操作1.1.服务注册：将自己的服务接口方法以及服务发布的地址等，注册到Eureka Server注册中心中；1.2.服务更新：对已经发布到注册中心的服务通知进行更新操作;1.3.服务删除:通过相关操作(如停止应用操作)通知注册中心，将应用服务从注册中心删除(移除);
2.服务发布者通过Eureka这个注册中心，每30秒发送一次心跳更新注册中心的数据;如果服务消费者一段时间之内不能更新这个服务发布者的服务信息，那么90s之内，这个服务将会被注册中心移除；

1.4.3.3.3.服务消费者：Eureka-Client(Application-Client)

1.服务消费者(Application Client)，在应用启动的时候，根据自己订阅的服务，会去注册中心(Eureka Server)拉取所有的服务清单列表会缓存到应用本地缓存，
2.

1.4.4.Eureka是是一个基于REST的服务，主要用于定位运行在应用域中的中间层服务

2.Demo 应用样例

2.1.Eureka Server注册中心搭建

2.1.1.创建项 [demo-spring-cloud-netflix-eureka-server]

2.1.2.引入Eureka Server 版本

这里的版本引入主要是下面这个

 <dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</artifactId></dependency>

当然pom里还有一些其他的内容，我们不做一一讲解
pom.xml原始内容

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.gaoxinfu.demo.spring.cloud</groupId><artifactId>demo-spring-cloud-netflix-eureka-server</artifactId><version>1.0-SNAPSHOT</version><packaging>jar</packaging><name>demo-spring-cloud-netflix-eureka-server</name><description>Eureka Server demo project</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.2.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>Finchley.BUILD-SNAPSHOT</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><start-class>eurekademo.EurekaApplication</start-class><java.version>1.8</java.version><docker.image.prefix>springcloud</docker.image.prefix></properties><build><plugins><plugin><groupId>com.spotify</groupId><artifactId>docker-maven-plugin</artifactId><version>0.2.3</version><configuration><baseImage>openjdk:8-jre-alpine</baseImage><imageName>${docker.image.prefix}/${project.artifactId}</imageName><exposes>8761</exposes><entryPoint>["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/${project.build.finalName}.jar"]</entryPoint><resources><resource><targetPath>/</targetPath><directory>${project.build.directory}</directory><include>${project.build.finalName}.jar</include></resource></resources></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><!-- defined in spring-cloud-starter-parent pom (as documentation hint),but needs to be repeated here --><configuration><requiresUnpack><dependency><groupId>com.netflix.eureka</groupId><artifactId>eureka-core</artifactId></dependency><dependency><groupId>com.netflix.eureka</groupId><artifactId>eureka-client</artifactId></dependency></requiresUnpack></configuration></plugin><plugin><groupId>pl.project13.maven</groupId><artifactId>git-commit-id-plugin</artifactId><configuration><failOnNoGitDirectory>false</failOnNoGitDirectory></configuration></plugin><plugin><!--skip deploy (this is just a test module) --><artifactId>maven-deploy-plugin</artifactId><configuration><skip>true</skip></configuration></plugin></plugins></build><repositories><repository><id>spring-snapshots</id><name>Spring Snapshots</name><url>https://repo.spring.io/libs-snapshot</url><snapshots><enabled>true</enabled></snapshots></repository><repository><id>spring-milestones</id><name>Spring Milestones</name><url>https://repo.spring.io/libs-milestone</url><snapshots><enabled>false</enabled></snapshots></repository><repository><id>spring-releases</id><name>Spring Releases</name><url>https://repo.spring.io/libs-release</url><snapshots><enabled>false</enabled></snapshots></repository></repositories><pluginRepositories><pluginRepository><id>spring-snapshots</id><name>Spring Snapshots</name><url>https://repo.spring.io/libs-snapshot-local</url><snapshots><enabled>true</enabled></snapshots></pluginRepository><pluginRepository><id>spring-milestones</id><name>Spring Milestones</name><url>https://repo.spring.io/libs-milestone-local</url><snapshots><enabled>false</enabled></snapshots></pluginRepository></pluginRepositories></project>

2.1.3.定义application.yml

server:port: 8761eureka:client:registerWithEureka: truefetchRegistry: trueserver:waitTimeInMsWhenSyncEmpty: 0

server.port:定义Eureka Server 端口
eureka.client.registerWithEureka ：表示是否将自己注册到Eureka Server，默认为true。由于当前这个应用就是Eureka Server，故而设为false。
eureka.client.fetchRegistry ：表示是否从Eureka Server获取注册信息，默认为true。因为这是一个单点的Eureka Server，不需要同步其他的Eureka Server节点的数据，故而设为false。

2.1.4.定义bootstrap.yml

spring:application:name: demo-spring-cloud-netflix-eureka-servercloud:config:uri: ${CONFIG_SERVER_URL:http://localhost:8888}

2.1.5.创建启动Java

package com.gaoxinfu.demo.spring.cloud.netflix.eureka.server;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;/*** @Description:* @Author: gaoxinfu* @Date: 2020-09-11 11:18*/
@EnableAutoConfiguration
@EnableEurekaServer
public class DemoSpringCloudNetflixEurekaServerApp {public static void main(String[] args) {SpringApplication.run(DemoSpringCloudNetflixEurekaServerApp.class,args);}
}

2.1.16.启动控台

http://127.0.0.1:8761/

2.2.Eureka Server-服务发布者

2.2.1.创建项目[demo-spring-cloud-netflix-eureka-provider]

2.2.2.引入jar包版本

     <dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-config</artifactId></dependency>

2.2.3.定义application.properties

spring.application.name=demo-srping-cloud-netflix-eureka-provider
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/
server.port=8762

2.2.4.创建启动Java

package com.gaoxinfu.demo.spring.cloud.netflix.eureka.provider;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;/*** @Description:* @Author: gaoxinfu* @Date: 2020-09-13 12:04*/
@SpringBootApplication
@EnableEurekaClient
public class DemoSpringCloudNetflixEurekaProviderApp {public static void main(String[] args) {SpringApplication.run(DemoSpringCloudNetflixEurekaProviderApp.class,args);}
}

2.2.5.启动验证问题：provider启动了之后立刻死掉了

2020-09-22 14:01:12.352  INFO 19151 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@3d74bf60: startup date [Tue Sep 22 14:01:12 CST 2020]; root of context hierarchy
2020-09-22 14:01:12.702  INFO 19151 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2020-09-22 14:01:12.782  INFO 19151 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'configurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$e525a3bd] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying).   ____          _            __ _ _/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\\/  ___)| |_)| | | | | || (_| |  ) ) ) )'  |____| .__|_| |_|_| |_\__, | / / / /=========|_|==============|___/=/_/_/_/:: Spring Boot ::        (v2.0.2.RELEASE)2020-09-22 14:01:13.319  INFO 19151 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8888
2020-09-22 14:01:13.478  INFO 19151 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8888. Will be trying the next url if available
2020-09-22 14:01:13.479  WARN 19151 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/demo-srping-cloud-netflix-eureka-provider/default": Connection refused (Connection refused); nested exception is java.net.ConnectException: Connection refused (Connection refused)
2020-09-22 14:01:13.482  INFO 19151 --- [           main] .DemoSpringCloudNetflixEurekaProviderApp : No active profile set, falling back to default profiles: default
2020-09-22 14:01:13.496  INFO 19151 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@791d1f8b: startup date [Tue Sep 22 14:01:13 CST 2020]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@3d74bf60
2020-09-22 14:01:14.060  INFO 19151 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=692091bb-c487-3110-9c25-53bfc11f7aa0
2020-09-22 14:01:14.077  INFO 19151 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2020-09-22 14:01:14.126  INFO 19151 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$e525a3bd] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2020-09-22 14:01:14.154  WARN 19151 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2020-09-22 14:01:14.154  INFO 19151 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-09-22 14:01:14.157  WARN 19151 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2020-09-22 14:01:14.157  INFO 19151 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2020-09-22 14:01:14.557  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2020-09-22 14:01:14.564  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'configurationPropertiesRebinder' has been autodetected for JMX exposure
2020-09-22 14:01:14.564  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'environmentManager' has been autodetected for JMX exposure
2020-09-22 14:01:14.565  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Bean with name 'refreshScope' has been autodetected for JMX exposure
2020-09-22 14:01:14.567  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'environmentManager': registering with JMX server as MBean [org.springframework.cloud.context.environment:name=environmentManager,type=EnvironmentManager]
2020-09-22 14:01:14.575  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'refreshScope': registering with JMX server as MBean [org.springframework.cloud.context.scope.refresh:name=refreshScope,type=RefreshScope]
2020-09-22 14:01:14.581  INFO 19151 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Located managed bean 'configurationPropertiesRebinder': registering with JMX server as MBean [org.springframework.cloud.context.properties:name=configurationPropertiesRebinder,context=791d1f8b,type=ConfigurationPropertiesRebinder]
2020-09-22 14:01:14.587  INFO 19151 --- [           main] o.s.c.support.DefaultLifecycleProcessor  : Starting beans in phase 0
2020-09-22 14:01:14.596  INFO 19151 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2020-09-22 14:01:14.620  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2020-09-22 14:01:14.764  INFO 19151 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2020-09-22 14:01:14.764  INFO 19151 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2020-09-22 14:01:14.872  INFO 19151 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2020-09-22 14:01:14.872  INFO 19151 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2020-09-22 14:01:14.990  INFO 19151 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2020-09-22 14:01:15.004  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2020-09-22 14:01:15.103  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2020-09-22 14:01:15.106  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2020-09-22 14:01:15.107  INFO 19151 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2020-09-22 14:01:15.110  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1600754475109 with initial instances count: 1
2020-09-22 14:01:15.113  INFO 19151 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER with eureka with status UP
2020-09-22 14:01:15.113  INFO 19151 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1600754475113, current=UP, previous=STARTING]
2020-09-22 14:01:15.129  INFO 19151 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER/10.56.39.27:demo-srping-cloud-netflix-eureka-provider:8762: registering service...
2020-09-22 14:01:15.142  INFO 19151 --- [           main] .DemoSpringCloudNetflixEurekaProviderApp : Started DemoSpringCloudNetflixEurekaProviderApp in 3.389 seconds (JVM running for 4.149)
2020-09-22 14:01:15.144  INFO 19151 --- [      Thread-11] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@791d1f8b: startup date [Tue Sep 22 14:01:13 CST 2020]; parent: org.springframework.context.annotation.AnnotationConfigApplicationContext@3d74bf60
2020-09-22 14:01:15.144  INFO 19151 --- [      Thread-11] o.s.c.n.e.s.EurekaServiceRegistry        : Unregistering application DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER with eureka with status DOWN
2020-09-22 14:01:15.145  WARN 19151 --- [      Thread-11] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1600754475145, current=DOWN, previous=UP]
2020-09-22 14:01:15.146  INFO 19151 --- [      Thread-11] o.s.c.support.DefaultLifecycleProcessor  : Stopping beans in phase 0
2020-09-22 14:01:15.147  INFO 19151 --- [      Thread-11] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2020-09-22 14:01:15.147  INFO 19151 --- [      Thread-11] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans
2020-09-22 14:01:15.148  INFO 19151 --- [      Thread-11] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
2020-09-22 14:01:15.156  INFO 19151 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER/10.56.39.27:demo-srping-cloud-netflix-eureka-provider:8762 - registration status: 204
2020-09-22 14:01:15.157  INFO 19151 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER/10.56.39.27:demo-srping-cloud-netflix-eureka-provider:8762: registering service...
2020-09-22 14:01:15.162  INFO 19151 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER/10.56.39.27:demo-srping-cloud-netflix-eureka-provider:8762 - registration status: 204
2020-09-22 14:01:15.163  INFO 19151 --- [      Thread-11] com.netflix.discovery.DiscoveryClient    : Unregistering ...
2020-09-22 14:01:15.169  INFO 19151 --- [      Thread-11] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_DEMO-SRPING-CLOUD-NETFLIX-EUREKA-PROVIDER/10.56.39.27:demo-srping-cloud-netflix-eureka-provider:8762 - deregister  status: 200
2020-09-22 14:01:15.176  INFO 19151 --- [      Thread-11] com.netflix.discovery.DiscoveryClient    : Completed shut down of DiscoveryClientProcess finished with exit code 0

2.2.6.问题解决:引入spring-boot-starter-web包

      <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>

2.2.7.再次启动验证-启动成功-查看eureka-server注册中心

2.2.8.我们在服务端provider项目中创建一个Controller

2.2.8.1.HelloController

package com.gaoxinfu.demo.spring.cloud.netflix.eureka.provider.controller;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;/*** @Description:* @Author: gaoxinfu* @Date: 2020-09-22 11:41*/
@EnableEurekaClient
@RestController
public class HelloController {@ResponseBody@RequestMapping("/hello")public String hello(String name) {return name + ", Welcome to Eureka Client Test Demo!";}
}

2.2.8.2.页面测试:直接验证服务端服务是否正常

http://localhost:8762/hello?name=gaoxinfu

从上面可以看出来，服务端的服务是没有问题的;

2.3.Eureka Client-服务消费者

2.4.项目源码

https://gitee.com/gaoxinfu_admin/demo-spring-cloud/tree/master/demo-spring-cloud-netflix-eureka-server

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