spring-cloud入门之eureka-server（服务发现）

所属分类：软件编程 / java 阅读数： 19

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前言

Eureka是一个服务发现和注册框架，细的来说，我们可以分为eureka-server（服务发现）和eureka-client（服务注册）两个，本次我们对eureka-server（服务发现）做一个项目搭建，作为spring-cloud的开篇。

开源地址：https://github.com/bigbeef

项目结构

maven结构大家应该都清楚（不清楚的需要补一补，百度关于maven的文章不计其数），下面我们来看一看这些关键文件的配置

代码编写

cppba-spring-cloud > pom.xml

<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.cppba</groupId>
  <artifactId>cppba-spring-cloud</artifactId>
  <version>1.0.0</version>
  <packaging>pom</packaging>
  <name>${project.artifactId}</name>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.5.RELEASE</version>
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <spring-cloud.version>Dalston.SR2</spring-cloud.version>
  </properties>

  <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>

  <modules>
    <module>cppba-spring-cloud-eureka-server</module>
  </modules>
</project>

cppba-spring-cloud-eureka-server > pom.xml

<?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>
  <artifactId>cppba-spring-cloud-eureka-server</artifactId>
  <packaging>jar</packaging>
  <name>${project.artifactId}</name>

  <parent>
    <groupId>com.cppba</groupId>
    <artifactId>cppba-spring-cloud</artifactId>
    <version>1.0.0</version>
  </parent>

  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-eureka-server</artifactId>
    </dependency>
  </dependencies>

    <build>
    <finalName>${project.name}</finalName>
    <plugins>
      <!--打包可执行的jar-->
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
   </build>
</project>

SpringCloudEurekaServerApplication.java

package com.cppba;

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

@EnableEurekaServer
@SpringBootApplication
public class SpringCloudEurekaServerApplication {

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

application.properties

server.port=8761

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

到此项目搭建完成

启动项目

我们启动SpringCloudEurekaServerApplication中的main方法，访问http://127.0.0.1:8761