eureka(服务注册与发现)

创建eureka

创建一个maven

image.png

删掉src,再把iml拉入idea

image.png

新建一个module

image.png

选择Spring Initializr

image.png

建一个eureka(服务发现与注册中心)
选择Eureka Server

image.png

修改父项目pom.xml
(加入Spring Boot的父级依赖)

<?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>org.example</groupId>
    <artifactId>weitest</artifactId>
    <version>1.0-SNAPSHOT</version>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</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>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

eureka端application.yml

spring:
  application:
    name: eureka
server:
  port: 8081
eureka:
  instance:
    hostname: locahost
  client:
    fetchRegistry: false
    registerWithEureka: false
    service-url:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

eureka端EurekaApplication中加上@EnableEurekaServer

image.png

启动项目
访问http://localhost:8081/
eureka创建完成

创建服务端

创建与eureka端类似
application.yml
没有eureka端的false
defaultZone填eureka端的端口

spring:
  application:
    name: client
server:
  port: 8761
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8081/eureka/

EurekaApplication中加上@EnableDiscoveryClient

image.png