Spring Cloud Eureka为服务发现组件。

1.创建eureka-server项目

1.1 修改pom文件，添加添加依赖：

        
     
      org.springframework.cloud
         
     
      spring-cloud-starter-netflix-eureka-server
     
    

1.2 启动类添加注解@EnableEurekaServer

详解代码如下：

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

1.3 修改application文件

server:  port: 8761eureka:  instance:    hostname: localhost  client:    register-with-eureka: false    fetch-registry: false    service-url:      defaultZone : http://${eureka.instance.hostname}:${server.port}/eureka/  server:    wait-time-in-ms-when-sync-empty: 0    enable-self-preservation: false

2 创建eureka-client项目

2.1 修改pom文件，添加依赖

       
     
      org.springframework.cloud
        
     
      spring-cloud-starter-netflix-eureka-client
     
    

2.2 修改启动类，添加注解 @EnableDiscoveryClient

详细代码如下：

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

2.3 修改application文件

server:  port: 8081spring:  application:    name: demo-client-1eureka:  client:    service-url:      defaultZone : http://localhost:8761/eureka/

分别依次启动eureka-server 和 eureka-client项目。然后访问http://localhost:8761/ ,会发现DEMO-CLIENT-1已经注册到了eureka-server上，状态为UP。