Spring Cloud entry combat (1) ------ build a registration center Eureka

foreword

Eureka is one of the core modules of Spring Cloud for service registration and discovery. This article mainly introduces how to configure and start an Eureka.

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Example project path

The first step is to rely on

The dependencies required to start Eureka are configured in Maven's .pom file:

    <dependencies>
        <!-- 1.3.1.RELEASE 对应spring版本为4.3.8 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
            <version>1.3.1.RELEASE</version>
        </dependency>
    </dependencies>

Each eureka version also corresponds to a different spring version. I chose 1.3.1.RELEASE because the local spring version is 4.3.8.RELEASE.

The second step is to configure

Define a configuration file, either named application.yml or application.properties.

server:
  port: 8762
eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

The third step, start

Build the startup class:

package com.silence.spring.cloud.eureka;

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

@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {

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

}

Spring Cloud relies on Spring Boot, which simplifies the related configuration work.

verify

After startup, type the link address in the browser: http://localhost:8762/ , if the following figure appears, it proves that Eureka has been started successfully.