spring-cloud入门(一):eureka-server(服务发现)

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

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<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

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<?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

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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

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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