springcloud注册中心集群搭建

##建立springboot项目##

1. 建立springboot项目，用server
2. 添加依赖：

<?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>net.xdclass</groupId>
    <artifactId>eureka_server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>eureka_server</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.RELEASE</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--以下为jdk9以上的版本的jaxb依赖添加-->
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.3.0</version>
        </dependency>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>activation</artifactId>
            <version>1.1.1</version>
        </dependency>
        <!--以上为jdk9以上的版本的jaxb依赖添加-->
    </dependencies>
    <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>
    <build>
        <plugins>
            <plugin>
            <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

##配置更改##

1. 添加配置
   
   application-registry1.yml
   hostname不能写localhost，必须制定主机名称并按照4进行修改
2. 进行主机环境修改
   C:\Windows\System32\drivers\etc\hosts
   修改格式如下：
   

##打包与启动##

1. 打包
   进入工程文件夹，用命令行输入如下命令: mvn clean
   待成功之后，再输入：mvn install
   在target文件夹下会多出.jar文件和.jar.original文件

2. 发布
   1）查看打包信息，查找打包到的地点（一般是本路径下的target文件夹下）
   2）进入target文件夹，新建三个批处理文件，分别写入下面三个命令：(为了方便，用批处理文件执行)
   java -jar eureka_server-0.0.1-SNAPSHOT.jar --spring.profiles.active=registry1
java -jar eureka_server-0.0.1-SNAPSHOT.jar --spring.profiles.active=registry2
java -jar eureka_server-0.0.1-SNAPSHOT.jar --spring.profiles.active=registry3
   待第三个命令执行结束，等30s（因为注册中心每30s进行查找注册到本中心的其他项目）

##查看是否成功##
依次输入网址：localhost:8761、localhost:8762、localhost:8763查看是否成功：