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SpringCloud教程-服务的注册与发现Eureka(SpringCloud版本Finchley)

發布時間:2025/1/21 javascript 54 豆豆
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文章目錄

    • SpringCloud簡介
    • 創建注冊中心(基于Eureka)
      • 創建maven工程
      • 創建maven子工程
        • eureka-server服務端pom文件
        • eureka-server服務端配置文件
        • eureka-server服務端啟動類
        • eureka-client客戶端pom文件
        • eureka-client客戶端配置文件
        • eureka-client客戶端啟動類
    • 啟動服務端和客戶端

代碼地址: github-spring-cloud地址

SpringCloud簡介

spring cloud 為開發人員提供了快速構建分布式系統的一些工具,包括配置管理、服務發現、斷路器、路由、微代理、事件總線、全局鎖、決策競選、分布式會話等等。它運行環境簡單,可以在開發人員的電腦上跑。另外spring cloud是基于springboot的,所以需要開發中對springboot有一定的了解。

本章SpringCloud版本是Finchley.RELEASE
SpringBoot版本為2.1.10.RELEASE

創建注冊中心(基于Eureka)

創建maven工程

創建maven主工程spring-cloud-learn,引入pom文件

<?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.sl.learn.cloud</groupId><artifactId>spring-cloud-learn</artifactId><version>1.0-SNAPSHOT</version><packaging>pom</packaging><modules><module>eureka-server</module><module>eureka-hello</module></modules><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.10.RELEASE</version><relativePath/></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version><spring-cloud.version>Finchley.RELEASE</spring-cloud.version><project.version>1.0-SNAPSHOT</project.version></properties><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>com.sl.cloud.learn</groupId><artifactId>eureka-server</artifactId><version>${project.version}</version></dependency><dependency><groupId>com.sl.cloud.learn</groupId><artifactId>eureka-hello</artifactId><version>${project.version}</version></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

創建maven子工程

創建maven子工程一個是作為注冊中心eureka-server,一個作為客戶端eureka-client

eureka-server服務端pom文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.sl.cloud.learn</groupId><artifactId>eureka-server</artifactId><version>1.0-SNAPSHOT</version><name>eureka-server</name><description>eureka-server</description><parent><groupId>com.sl.learn.cloud</groupId><artifactId>spring-cloud-learn</artifactId><version>1.0-SNAPSHOT</version><relativePath>..</relativePath></parent><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</artifactId></dependency></dependencies></project>

eureka-server服務端配置文件

server:port: 8080spring:application:name: eureka-servereureka:instance:hostname: localhostclient:registerWithEureka: falsefetchRegistry: falseserviceUrl:defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

eureka-server服務端啟動類

package com.sl.cloud.learn.server;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@SpringBootApplication @EnableEurekaServer public class EurekaServerApplication {public static void main(String[] args) {SpringApplication.run(EurekaServerApplication.class, args);}}

eureka-client客戶端pom文件

<?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"><parent><artifactId>spring-cloud-learn</artifactId><groupId>com.sl.learn.cloud</groupId><version>1.0-SNAPSHOT</version><relativePath>..</relativePath></parent><modelVersion>4.0.0</modelVersion><groupId>com.sl.learn.cloud</groupId><artifactId>eureka-hello</artifactId><version>1.0-SNAPSHOT</version><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency></dependencies></project>

eureka-client客戶端配置文件

server:port: 8081spring:application:name: eureka-helloinfo:app:name: spring-boot-actuatorversion: 1.0.0test: testeureka:client:serviceUrl:defaultZone: http://localhost:8080/eureka/management:endpoints:web:exposure:include: '*'endpoint:health:show-details: alwaysshutdown:enabled: true

eureka-client客戶端啟動類

package com.sl.cloud.learn.client;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient;@SpringBootApplication @EnableEurekaClient public class EurekaClientApplication {public static void main(String[] args) {SpringApplication.run(EurekaClientApplication.class, args);}}

啟動服務端和客戶端

啟動eureka-server訪問地址:http://localhost:8080/ 可以看到如下圖

啟動eureka-hello 可以看到如下圖說明客戶端已經注冊到eureka

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