spring-cloud入门（一）：eureka-server（

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
个人博客：http://blog.cppba.com

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

到此，eureka-server（服务发现）项目搭建成功