springcloud eureka服务注册中心搭建

1.构建一个maven项目

2.添加maven依赖（所有基础依赖都放在一个项目下）

pom内容如下

<?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>

  <groupId>com.ouyang</groupId>
  <artifactId>springcloud-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>springcloud-parent</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.3.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <modules>
  	<module>springcloud</module>
  	<module>springcloud-ribbon</module>
    <module>springcloud-Eureka</module>
    <module>springcloud-service</module>
    <module>springcloud-feign</module>
    <module>springcloud-zuul</module>
    <module>springcloud-security</module>
    <module>springcloud-client</module>
    <module>springcloud-oauth2</module>
    <module>spring-cloud-config-server</module>
    <module>spring-cloud-config-client</module>
  </modules>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <scope>test</scope>
    </dependency>
<!--     暂时不使用JDBC，注释到这 -->
<!--     <dependency> -->
<!--          <groupId>org.springframework.boot</groupId> -->
<!--          <artifactId>spring-boot-starter-jdbc</artifactId> -->
<!--      </dependency> -->
     <dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-aop</artifactId>
	</dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
		<artifactId>spring-cloud-starter-eureka-server</artifactId>
    </dependency>
    <dependency>  
	   <groupId>org.springframework.boot</groupId>  
	   <artifactId>spring-boot-starter-security</artifactId>  
	</dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-ribbon</artifactId>
    </dependency>
    <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-starter-feign</artifactId>
    </dependency>
	<!--     Hystrix断路器依赖-->
    <dependency>
   		<groupId>org.springframework.cloud</groupId>
	    <artifactId>spring-cloud-starter-hystrix</artifactId>
	</dependency>
	<!--     Hystrix断路器依赖-->
	<!-- 	Hystrix Dashboard (断路器：Hystrix 仪表依赖 -->
	<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
    </dependency>
    <!-- 	Hystrix Dashboard (断路器：Hystrix 仪表依赖 -->
	<!--     zuul路由网关 -->
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-zuul</artifactId>
    </dependency>
    <!--     zuul路由网关 -->
	<!--      引入oauth2 -->
    <dependency>
    	<groupId>org.springframework.cloud</groupId>
    	<artifactId>spring-cloud-starter-oauth2</artifactId>
    </dependency>
    <!--      引入oauth2 -->
<!--     springcloud config-server如果在此处引入会导致后续client获取不到配置项,同时返回的结果也不是json格式的，是XML格式的 -->
<!--     <dependency> -->
<!-- 	    <groupId>org.springframework.cloud</groupId> -->
<!-- 	    <artifactId>spring-cloud-config-server</artifactId> -->
<!-- 	</dependency> -->
	<dependency>
	    <groupId>org.springframework.cloud</groupId>
	    <artifactId>spring-cloud-config-client</artifactId>
	</dependency>
	<dependency>
	    <groupId>org.springframework.boot</groupId>
	    <artifactId>spring-boot-starter-web</artifactId>
	</dependency>
    <!-- 	添加mybatis依赖	-->
 		 <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.8</version>
        </dependency>
		<!--   添加mysql的jar     -->
		<dependency>
			<groupId>c3p0</groupId>
			<artifactId>c3p0</artifactId>
			<version>0.9.1.2</version>
		</dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
  </dependencies>
 <dependencyManagement>
    <dependencies>
        <dependency>
	    <groupId>org.springframework.cloud</groupId>
	    <artifactId>spring-cloud-dependencies</artifactId>
	    <version>Dalston.SR1</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>
  <!--   mvn打包时resource下面的文件丢失-->
  <resources>
  	<resource>
		<directory>src/main/java</directory>
			<includes>
				<include>**/*.properties</include>
			</includes>
		</resource>
		<resource>
			<directory>src/main/resource</directory>
		</resource>
		<resource>
			<directory>src/main/resources</directory>
		</resource>
  </resources>
 </build>
</project>

整体项目结构图

启动类EurekaApplication代码如下：

package org.springcloud.Eureka;

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

@EnableEurekaServer
@SpringBootApplication
public class EurekaApplication {
	public static void main(String[] args) {
		SpringApplication.run(EurekaApplication.class, args);
	}
}

配置文件application.properties内容如下

#配置springboot启动tomcat端口
server.port=1112
#name必须一样，不然高可用会导致unavailable-replicas
spring.application.name=register
eureka.instance.hostname=backup1
#是否向服务注册中心注册自己(高可用时需要配置为true)
eureka.client.register-with-eureka=true
#是否检索服务(高可用时需要配置为true)
eureka.client.fetch-registry=true
#配置eureka账户
security.user.name=ouyang
#配置eureka密码
security.user.password=ouyang
#服务注册中心的配置内容，指定服务注册中心的位置
eureka.client.serviceUrl.defaultZone=http://${security.user.name}:${security.user.password}@${eureka.instance.hostname}:${server.port}/eureka/,http://${security.user.name}:${security.user.password}@master:1111/eureka/

运行EurekaApplication之后页面访问如下：

此时发现unavailable-replicas中出现http://master:1111/eureka/，这种情况需要检查服务器host文件是否有对应的eureka.instance.hostname配置值

配置完毕后重启两个eureka服务，至此eureka高可用的配置结束，如下图

git下载地址：https://github.com/ouyang1203/springcloud-parent.git