Eclipse配置运行SpringCloud（Hoxton + 2.2.4）微服务框架 + 搭建Eureka 以及高可用Eureka Server集群

其他 2020-03-21 11:02:47 阅读次数: 0

springcloud是微服务架构的集大成者，基于springboot构建，将一系列优秀的组件进行了整合。
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中文文档：https://springcloud.cc/
官方文档：http://projects.spring.io/spring-cloud/#quick-start

构建环境

请一定要注意spring boot版本和spring cloud版本的匹配关系：https://spring.io/projects/spring-cloud

软件 版本
SpringCloud Hoxton.RELEASE
Spring Boot 2.2.4.RELEASE
Jdk 1.8
Maven 3.6

一、创建注册中心

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编写POM文件添加Spring-Cloud基本应用包

<?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">
  <!-- 模型版本。maven2.0必须是这样写，现在是maven2唯一支持的版本 -->
  <modelVersion>4.0.0</modelVersion>
  <!-- 项目的的唯一标识符，并且配置时生成的路径也是由此生成，maven会将该项目打成的jar包放本地路径：/com/springcloud --> 
  <groupId>com.springcloud</groupId>
  <!-- 构件的标识符，它和group ID一起唯一标识一个构件，一个groupId下面可能多个项目，就是靠artifactId来区分的。
  Maven为项目产生的构件包括：JARs，源码，二进制发布和WARs等 -->
  <artifactId>springcloud-root</artifactId>
  <!-- 项目当前版本号，格式为:主版本.次版本.增量版本-限定版本号 -->
  <version>0.0.1-SNAPSHOT</version>
  <!-- 项目产生的构件类型，如pom,jar, maven-plugin, ejb, war, ear, rar, par，默认为jar -->
  <packaging>pom</packaging>
  <!-- 项目的名称, Maven产生的文档用 --> 
  <name>spring-cloud</name>
  <!-- 项目主页的URL, Maven产生的文档用 -->
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  
  <!-- 父项目的坐标。如果项目中没有规定某个元素的值，那么父项目中的对应值即为项目的默认值。坐标包括group ID，artifact ID和 version。 --> 
  <parent>
    <!-- 被继承的父项目的唯一标识符 -->
    <groupId>org.springframework.boot</groupId>
    <!-- 被继承的父项目的构件标识符 -->
    <artifactId>spring-boot-starter-parent</artifactId>
    <!-- 被继承的父项目的版本 --> 
    <version>2.2.4.RELEASE</version>
  </parent>
  <modules>
    <!--注册中心项目-->
    <module>spring-register</module>
    <module>springcloud-eureka</module>
    <module>springcloud-common</module>
    <module>springcloud-zuul</module>
    <module>springcloud-eureka-cluster</module>
  </modules>
 
  <!-- 该元素描述了项目相关的所有依赖。 这些依赖组成了项目构建过程中的一个个环节。自动从项目定义的仓库中下载。--> 
  <dependencyManagement>
    <dependencies>
      <dependency>
        <!-- 依赖的group ID --> 
        <groupId>org.springframework.cloud</groupId>
        <!-- 依赖的artifact ID -->
        <artifactId>spring-cloud-dependencies</artifactId>
        <!-- 依赖的版本号。 在Maven 2里, 可以配置成版本号的范围。 -->
        <version>Hoxton.RELEASE</version>
        <!-- 依赖类型。 -->
        <type>pom</type>
        <!-- 依赖范围。在项目发布过程中，帮助决定哪些构件被包括进来
           - compile ：默认范围，用于编译 
           - provided：类似于编译，但支持你期待jdk或者容器提供，类似于classpath 
           - runtime: 在执行时需要使用 
           - test: 用于test任务时使用 
           - system: 需要外在提供相应的元素。通过systemPath来取得 
           - systemPath: 仅用于范围为system。提供相应的路径 
           - optional: 当项目自身被依赖时，标注依赖是否传递。用于连续依赖时使用 --> 
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>
  <!--使用aliyun镜像-->
  <repositories>
    <repository>
      <id>alimaven</id>
      <name>Maven Aliyun Mirror</name>
      <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
      <releases>
        <enabled>true</enabled>
      </releases>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

二、创建注册中心项目springcloud-eureka

微服务架构中最核心的部分是服务治理，服务治理最基础的组件是注册中心。Spring Cloud支持了Zookeeper、Consul和Eureka，官方推荐Eureka。

创建一个maven-module，通过maven指定父类目录

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添加依赖包文件POM.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.springcloud</groupId>
    <artifactId>springcloud-root</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>springcloud-eureka</artifactId>
  <name>springcloud-eureka</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
      <version>2.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-webflux</artifactId>
      <version>2.2.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>
spring-cloud-starter-eureka-server:jar is missing 错误
Project build error: 'dependencies.dependency.version' for org.springframework.cloud:spring-cloud-starter-eureka-server:jar is missing.

change: spring-cloud-starter-eureka-server to spring-cloud-starter-netflix-eureka-server

添加注册中心启动类

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package org.springcloud.eureka;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication //spring-boot 启动注解
@EnableEurekaServer // spring-cloud 服务注解

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

配置application.yml文件

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spring:
  application:
    # 当前服务名
    name: springcloud-eureka
  freemarker:
    prefer-file-system-access: false
server:
  # 端口号
  port: 8899
---
eureka:
  instance:
    hostname: localhost
  client:
    # 检索服务
    fetch-registry: false
    # 是否将自己注册到eureka
    register-with-eureka: false
    # 客户端默认去这个地址找注册中心
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
  server:
    # 当eureka启动时，不能从集群节点中获取到instance注册信息，应该等多久
    wait-time-in-ms-when-sync-empty: 0
    enable-self-preservation: true
    # eureka多长时间更新一次数据
    peer-eureka-nodes-update-interval-ms: 100000
ERROR org.springframework.boot.SpringApplication - Application run failed 错误
15:02:33.112 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
java.lang.NoSuchMethodError: org.springframework.boot.builder.SpringApplicationBuilder.<init>([Ljava/lang/Object;)V
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:157)
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:98)
	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:64)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
	at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140)
	at org.springcloud.eureka.RegisterMain.main(RegisterMain.java:16)

spring boot版本兼容性导致的，在pom.xml中修改配置文件，将springcloud的版本与springboot的版本对应起来即可解决。

spring boot版本和spring cloud版本的匹配关系：
https://spring.io/projects/spring-cloud

Spring Cloud Spring Boot
Hoxton 2.2.x
Greenwich 2.1.x
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
APPLICATION FAILED TO START 错误
***************************
APPLICATION FAILED TO START
***************************

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

    org.springframework.cloud.client.discovery.health.DiscoveryCompositeHealthIndicator.<init>(DiscoveryCompositeHealthIndicator.java:41)

The following method did not exist:

    org.springframework.boot.actuate.health.CompositeHealthIndicator.<init>(Lorg/springframework/boot/actuate/health/HealthAggregator;)V

The method's class, org.springframework.boot.actuate.health.CompositeHealthIndicator, is available from the following locations:

    jar:file:/E:/SpringBoot/Maven-Repository/org/springframework/boot/spring-boot-actuator/2.2.4.RELEASE/spring-boot-actuator-2.2.4.RELEASE.jar!/org/springframework/boot/actuate/health/CompositeHealthIndicator.class

It was loaded from the following location:

    file:/E:/SpringBoot/Maven-Repository/org/springframework/boot/spring-boot-actuator/2.2.4.RELEASE/spring-boot-actuator-2.2.4.RELEASE.jar

将springcloud的版本与springboot的版本对应起来即可解决。

Unable to start reactive web server 错误
org.springframework.context.ApplicationContextException: Unable to start reactive web server; nested exception is org.springframework.context.ApplicationContextException: Unable to start ReactiveWebApplicationContext due to missing ReactiveWebServerFactory bean.
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.onRefresh(ReactiveWebServerApplicationContext.java:81) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:140) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springcloud.eureka.RegisterMain.main(RegisterMain.java:15) [classes/:na]
Caused by: org.springframework.context.ApplicationContextException: Unable to start ReactiveWebApplicationContext due to missing ReactiveWebServerFactory bean.
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.getWebServerFactoryBeanName(ReactiveWebServerApplicationContext.java:100) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.createWebServer(ReactiveWebServerApplicationContext.java:88) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.onRefresh(ReactiveWebServerApplicationContext.java:78) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]

添加webflux的依赖

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-webflux</artifactId>
  <version>2.2.4.RELEASE</version>
</dependency>

运行启动类，访问http://localhost:8899即可，如下图
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注册中心已经完成。

三、注册中心密码配置

在POM.xml中增加：

   <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
      <version>2.2.4.RELEASE</version>
    </dependency>

版本可以在此网站查询：
https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-security

application.yml 文件中增加配置

spring:
  application:
    name: springcloud-eureka
  freemarker:
    prefer-file-system-access: false
  security:
    basic: 
      enable: true
    user: 
      name: admin
      password: 123456
server:
  port: 8899
---
eureka:
  instance:
    hostname: localhost
  client:
    fetch-registry: false
    register-with-eureka: false
    service-url:
      defaultZone: http://${security.user.name}:${security.user.password}@${eureka.instance.hostname}:${server.port}/eureka/
  server:
    wait-time-in-ms-when-sync-empty: 0
    enable-self-preservation: true
    peer-eureka-nodes-update-interval-ms: 100000

再次启动后访问http://localhost:8899，如下图
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输入用户名密码后，进入页面

四、创建服务注册到注册中心

创建一个maven module 项目
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添加依赖包文件POM.xml

<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.springcloud</groupId>
    <artifactId>springcloud-root</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>springcloud-common</artifactId>
  <name>springcloud-common</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
      <version>2.2.1.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-webflux</artifactId>
      <version>2.2.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

添加客户端启动类

package org.springcloud.common;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

@SpringBootApplication
@EnableEurekaClient //Eureka Client

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

配置application.yml文件

spring:
  application:
    name: springcloud-common
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
    
server:
  port: 8001
  
eureka:
  instance:
    hostname: localhost
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@${eureka.instance.hostname}:8899/eureka/

运行客户端启动类，可以看到该客户端已经被注册到服务端，如下图
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cannot execute any request on any know server 错误

在eurka服务中添加一个安全认证类
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package org.springcloud.eureka;

import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;

@EnableWebSecurity
@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        // Configure HttpSecurity as needed (e.g. enable http basic).
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.NEVER);
        http.csrf().disable();
        //为了可以使用 http://${user}:${password}@${host}:${port}/eureka/ 这种方式登录,所以必须是httpBasic,
        http.authorizeRequests().anyRequest().authenticated().and().httpBasic();
    }
}

重新运行即可。

五、Eureka高可用集群

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将 application.yml 文件复制三分：application-peer1.yml，application-peer2.yml，application-peer3.yml。
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分别添加配置项如下：

  • application-peer1.yml
spring:
  application:
    name: springcloud-eureka-cluster
  freemarker:
    prefer-file-system-access: false
  security:
    user: 
      name: admin
      password: 123456
server:
  port: 8897
---
eureka:
  instance:
    hostname: eureka-peer1.com
    instance-id: eureka-peer1
  client:
    fetch-registry: true
    register-with-eureka: true
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/
  • application-peer2.yml
spring:
  application:
    name: springcloud-eureka-cluster
  freemarker:
    prefer-file-system-access: false
  security:
    user: 
      name: admin
      password: 123456
server:
  port: 8898
---
eureka:
  instance:
    hostname: eureka-peer2.com
    instance-id: eureka-peer2
  client:
    fetch-registry: true
    register-with-eureka: true
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/
  • application-peer3.yml
spring:
  application:
    name: springcloud-eureka-cluster
  freemarker:
    prefer-file-system-access: false
  security:
    user: 
      name: admin
      password: 123456
server:
  port: 8899
---
eureka:
  instance:
    hostname: eureka-peer3.com
    instance-id: eureka-peer3
  client:
    fetch-registry: true
    register-with-eureka: true
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/

修改C:\Windows\System32\drivers\etc\hosts

127.0.0.1 eureka-peer1.com eureka-peer2.com eureka-peer3.com

maven install生成jar包，通过 spring.profiles.active 属性来分别启动三台服务器：

cd E:\SpringBoot\SpringCloud\springcloud-root\springcloud-eureka-cluster\target
java -jar springcloud-eureka-cluster-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1
java -jar springcloud-eureka-cluster-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2
java -jar springcloud-eureka-cluster-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer3

也可通过Run Configurations配置启动
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  • 访问 http://eureka-peer1.com:8897/
    在这里插入图片描述

  • 访问 http://eureka-peer2.com:8898/
    在这里插入图片描述

  • 访问http://eureka-peer3.com:8899/
    在这里插入图片描述

Eureka服务注册集群各节点均在unavailable-replicas下错误

  1. 各个节点application名字要保持一致
  2. 本地测试时各个节点都在同一台机器，hostname需要在本地host中填写，各个节点使用自己的host
  3. prefer-ip-address设置为true或者默认不填写。
  4. register-with-eureka和fetch-registry都为true
  5. defaultZone不能使用localhost，需要使用自己在host中配置的域名，配置项为除自己以外的集群中所有节点。

No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?错误

https://blog.csdn.net/lslk9898/article/details/73836745

六、启动多个服务提供者实例

启动多个springcloud-eureka-provider实例，端口分别为8001，8002和8003
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  • application-provider1.yml
spring:
  application:
    name: springcloud-eureka-provider
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
    
server:
  port: 8001
  
eureka:
  instance:
    hostname: eureka-provider1.com
    instance-id: eureka-provider1
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/
  • application-provider2.yml
spring:
  application:
    name: springcloud-eureka-provider
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
    
server:
  port: 8002
  
eureka:
  instance:
    hostname: eureka-provider2.com
    instance-id: eureka-provider2
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/
  • application-provider3.yml
spring:
  application:
    name: springcloud-eureka-provider
  freemarker:
    prefer-file-system-access: false
  security:
    user:
      name: admin
      password: 123456
    
server:
  port: 8003
  
eureka:
  instance:
    hostname: eureka-provider3.com
    instance-id: eureka-provider3
  client:
    service-url:
      defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer1.com:8897/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer2.com:8898/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-peer3.com:8899/eureka/

修改C:\Windows\System32\drivers\etc\hosts

127.0.0.1 eureka-provider1.com eureka-provider2.com eureka-provider3.com

通过Run Configurations配置启动
在这里插入图片描述

查看Eureka注册中心

http://eureka-peer1.com:8897/
在这里插入图片描述
http://eureka-peer2.com:8898/，http://eureka-peer3.com:8899/ 结果同上。
三个服务提供者实例已成功注册。

赵健乔
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