SpringCloud — (2) 服务治理Eureka集群

1.新建一个普通的mavent项目，该项目也为Eureka注册中心

new maven-project→springcloud-2.0-eureka-8200(jar)

pom.xml配置

<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.dengfeng</groupId>
  <artifactId>springcloud-2.0-eureka-server</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
    </parent>
    <!-- 管理依赖 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.M7</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <!--SpringCloud eureka-server -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>3.0.1</version>
        </dependency>
        
    </dependencies>
    <!-- 注意： 这里必须要添加， 否者各种依赖有问题 -->
    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/libs-milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
</project>

在srm/main/resource下新建application.yml

###服务端口号
server:
  port: 8200
###eureka 基本信息配置
spring: 
 application: 
  name: eureka-server
eureka:
  instance:
    ###注册到eurekaip地址
    hostname: 127.0.0.1
  client:
    serviceUrl:
      defaultZone: http://127.0.0.1:8100/eureka/
###因为自己是为注册中心，不需要自己注册自己
    register-with-eureka: true
###因为自己是为注册中心，不需要检索服务
    fetch-registry: true

新建启动类AppEureka

package com.euraka;

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

@EnableEurekaServer  /*@EnableEurekaServer作用:开启eurekaServer*/
@SpringBootApplication
public class AppEureka {

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

}

修改springcloud-2.0-eureka-server工程的application.yml

###服务端口号
server:
  port: 8100
###eureka 基本信息配置
spring: 
 application: 
  name: eureka-server
eureka:
  instance:
    ###注册到eurekaip地址
    hostname: 127.0.0.1
  client:
    serviceUrl:
      defaultZone: http://127.0.0.1:8200/eureka/
###因为自己是为注册中心，不需要自己注册自己
    register-with-eureka: true
###因为自己是为注册中心，不需要检索服务
    fetch-registry: true

修改服务提供者工程springcloud-2.0-member的application.yml

###服务端口号
server:
  port: 8100
###eureka 基本信息配置
spring: 
 application: 
  name: eureka-server
eureka:
  instance:
    ###注册到eurekaip地址
    hostname: 127.0.0.1
  client:
    serviceUrl:
      defaultZone: http://127.0.0.1:8200/eureka/
###因为自己是为注册中心，不需要自己注册自己
    register-with-eureka: true
###因为自己是为注册中心，不需要检索服务
    fetch-registry: true

修改消费者工程springcloud-2.0-order的application.yml

###服务启动端口号
server:
  port: 8001
###服务名称(服务注册到eureka名称)  
spring:
    application:
        name: app-dengfeng360-order
###服务注册到eureka地址
#eureka:
# client:
#    service-url:
 #          defaultZone: http://localhost:8100/eureka
###集群地址
eureka:
  client:
    service-url:
           defaultZone: http://localhost:8100/eureka,http://localhost:8200/eureka

           
###因为该应用为注册中心，不会注册自己
    register-with-eureka: true
###是否需要从eureka上获取注册信息,不需要去注册中心上检索服务
    fetch-registry: true

分别启动2个注册中心，和提供者和消费者项目

注册中心管理页面

正常调用