最近在学习的时候，发现微服务架构中，假如只有一个注册中心，那这个注册中心挂了可怎么办，这样的系统，既不安全，稳定性也不好，网上和书上找了一会，发现这个spring cloud早就想到了，并帮我们解决了！
构建高可用的注册中心 1.创建spring boot项目创建的网站，界面如下，创建两个spring工程，一个作为注册中心，一个作为测试客户端，注意要导入（eureka-server），创建的界面如下
导入的依赖的配置如下
1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 "> 4 <modelVersion>4.0.0</modelVersion> 5 6 <groupId>com.example</groupId> 7 <artifactId>enreka-server</artifactId> 8 <version>0.0.1-SNAPSHOT</version> 9 <packaging>jar</packaging> 10 11 <name>enreka-server</name> 12 <description>Demo project for Spring Boot</description> 13 14 <parent> 15 <groupId>org.springframework.boot</groupId> 16 <artifactId>spring-boot-starter-parent</artifactId> 17 <version>2.0.3.RELEASE</version> 18 <relativePath/> <!-- lookup parent from repository --> 19 </parent> 20 21 <properties> 22 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 23 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 24 <java.version>1.8</java.version> 25 <spring-cloud.version>Finchley.RELEASE</spring-cloud.version> 26 </properties> 27 28 <dependencies> 29 <dependency> 30 <groupId>org.springframework.boot</groupId> 31 <artifactId>spring-boot-starter-web</artifactId> 32 </dependency> 33 <dependency> 34 <groupId>org.springframework.cloud</groupId> 35 <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId> 36 </dependency> 37 38 <dependency> 39 <groupId>org.springframework.boot</groupId> 40 <artifactId>spring-boot-starter-test</artifactId> 41 <scope>test</scope> 42 </dependency> 43 </dependencies> 44 45 <dependencyManagement> 46 <dependencies> 47 <dependency> 48 <groupId>org.springframework.cloud</groupId> 49 <artifactId>spring-cloud-dependencies</artifactId> 50 <version>${spring-cloud.version}</version> 51 <type>pom</type> 52 <scope>import</scope> 53 </dependency> 54 </dependencies> 55 </dependencyManagement> 56 57 <build> 58 <plugins> 59 <plugin> 60 <groupId>org.springframework.boot</groupId> 61 <artifactId>spring-boot-maven-plugin</artifactId> 62 </plugin> 63 </plugins> 64 </build> 65 66 67 </project>