本篇内容主要讲解“Spring cloud中怎么配置项目结构实现Eureka服务”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“Spring cloud中怎么配置项目结构实现Eureka服务”吧!
首先,我们在创建投放系统之前,先看一下我们的工程结构:
mscx-ad-sponsor
就是我们的广告投放系统。如上结构,我们需要首先创建一个Parent Project mscx-ad
来编写父项目的pom,来管理我们的统一依赖信息。
<?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> <packaging>pom</packaging> <modules> <module>mscx-ad-discovery</module> <module>mscx-ad-zuul</module> <module>mscx-ad-gateway</module> <module>mscx-ad-discovery-nacos</module> <module>mscx-ad-common</module> <module>mscx-ad-db</module> <module>mscx-ad-sponsor</module> <module>mscx-ad-search</module> <module>mscx-ad-feign-sdk</module> </modules> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.5.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.sxzhongf</groupId> <artifactId>mscx-ad</artifactId> <version>1.0-SNAPSHOT</version> <name>分布式广告系统</name> <description>基于Spring Cloud Alibaba 实现的分布式广告系统</description> <properties> <java.version>1.8</java.version> <spring-cloud.version>Greenwich.SR2</spring-cloud.version> </properties> <dependencies> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!--Spring cloud 监控端点管理依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> </dependencies> <!--定义Spring Cloud 主版本--> <dependencyManagement> <dependencies> <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> <!--定义远程maven仓库--> <repositories> <!-- Spring 中央仓库 --> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> <!-- Ali 中央仓库 --> <repository> <id>alibaba-milestones</id> <name>ali Milestones</name> <url>http://maven.aliyun.com/nexus/content/groups/public/</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> <!--项目编译插件--> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
Eureka Server (提供服务的注册和发现)
Eureka Client
Service provider (服务提供方,将自身注册到server上,从而让Eureka Server保存provider的元数据,让其他的服务消费者可以找到当前服务)
Service Consumer(服务消费方,从Eureka Server上获取注册的服务列表,从而消费服务)
创建project mscx-ad-discovery
, 然后使用SpringBoot项目的三部曲(加依赖,加注解,改配置)
spring-cloud-starter-eureka-server
<?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>mscx-ad</artifactId> <groupId>com.sxzhongf</groupId> <version>1.0-SNAPSHOT</version> <relativePath>../pom.xml</relativePath> </parent> <modelVersion>4.0.0</modelVersion> <packaging>jar</packaging> <groupId>com.sxzhongf</groupId> <artifactId>mscx-ad-discovery</artifactId> <version>1.0-SNAPSHOT</version> <name>服务发现组件</name> <description>先使用eureka实现,后续会使用nacos替换掉</description> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <!--<artifactId>spring-cloud-netflix-eureka-server</artifactId>--> <artifactId>spring-cloud-starter-eureka-server</artifactId> <version>1.2.7.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
@EnableEurekaServer
)@SpringBootApplication @EnableEurekaServer public class DiscoveryApplication { public static void main(String[] args) { SpringApplication.run(DiscoveryApplication.class, args); } }
spring: application: name: ad-discovery-server server: port: 8888 eureka: instance: hostname: localhost #单机版 client: fetch-registry: false #是否从eureka server获取注册信息 register-with-eureka: false #注册自己到eureka service-url: defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
测试的时候,需要修改hosts文件
zhangpandeMacBook-Pro:etc zhangpan$ cat hosts ## ... ## 127.0.0.1 localhost 127.0.0.1 server1 127.0.0.1 server2 127.0.0.1 server3 ::1 localhost
然后修改application.yml
spring: application: name: ad-discovery profiles: server1 server: port: 7777 eureka: instance: hostname: server1 prefer-ip-address: false client: service-url: defaultZone: http://server2:8888/eureka/,http://server3:9999/eureka/ --- spring: application: name: ad-discovery profiles: server2 server: port: 8888 eureka: instance: hostname: server2 prefer-ip-address: false client: service-url: defaultZone: http://server1:7777/eureka/,http://server3:9999/eureka/ --- spring: application: name: ad-discovery profiles: server3 server: port: 9999 eureka: instance: hostname: server3 prefer-ip-address: false client: service-url: defaultZone: http://server2:8888/eureka/,http://server1:7777/eureka/
启动集群测试:
配置启动profile / java -jar mscx-ad-discovery.jar --spring.profiles.active=server1
效果展示
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