构建微服务应用的第一步是搭建服务注册中心,它本身也是一个特殊的微服务,负责维护所有其他微服务的注册信息。
整个过程分为六个步骤:
步骤一:创建服务注册中心
使用 spring-cloud-starter-netflix-eureka-server
依赖项构建服务注册中心微服务应用。 pom.xml
文件如下:
<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>
<parent>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-parent</artifactid>
<version>3.4.1</version>
<relativepath/>
</parent>
<groupid>com.sky</groupid>
<artifactid>service-registry</artifactid>
<version>1.0</version>
<name>service-registry</name>
<description>registry for job portal application</description>
<url/>
<licenses>
<license/>
</licenses>
<developers>
<developer/>
</developers>
<scm>
<connection/>
<developerconnection/>
<tag/>
<url/>
</scm>
<properties>
<java.version>21</java.version>
<spring-cloud.version>2024.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-web</artifactid>
</dependency>
<dependency>
<groupid>org.springframework.cloud</groupid>
<artifactid>spring-cloud-starter-netflix-eureka-server</artifactid>
</dependency>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-test</artifactid>
<scope>test</scope>
</dependency>
</dependencies>
<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>
<build>
<plugins>
<plugin>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-maven-plugin</artifactid>
</plugin>
</plugins>
</build>
</project>
步骤二:启用Eureka Server
在主应用程序类中添加 @EnableEurekaServer
注解:
package com.sky.service_registry;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class ServiceRegistryApplication {
public static void main(String[] args) {
SpringApplication.run(ServiceRegistryApplication.class, args);
}
}
步骤三:配置服务注册中心
在 application.properties
文件中配置以下属性,告知Spring不将该应用注册为微服务:
spring.application.name=service-registry
server.port=8761
eureka.instance.hostname=localhost
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
步骤四至六:注册新微服务
pom.xml
中添加 spring-cloud-starter-netflix-eureka-client
依赖项。application.properties
文件,指定 Eureka 服务器的 URL (指向步骤一至三创建的服务注册中心)。http://localhost:8761/
) 验证注册结果。敬请期待微服务系列文章的后续内容!感谢阅读!