服务端配置

pom.xml文件如下：

    
    	
     
      4.0.0
     	
     
      com.neo
     	
     
      spring-cloud-eureka-two
     	
     
      0.0.1-SNAPSHOT
     	
     
      jar
     	
     
      spring-cloud-eureka-two
     	
     
      Demo project for Spring cloud eureka
     	
     		
      
       org.springframework.boot
      		
      
       spring-boot-starter-parent
      		
      
       1.5.3.RELEASE
      		
       
      	
     	
     		
      
       UTF-8
      		
      
       UTF-8
      		
      
       1.8
      		
      
       Dalston.RELEASE
      	
     	
     		
      			
      			
      		
      		
      			
       
        org.springframework.cloud
       			
       
        spring-cloud-starter-eureka-server
       		
      		
      			
       
        org.springframework.boot
       			
       
        spring-boot-starter-test
       			
       
        test
       		
      	
     	
     		
      			
       				
        
         org.springframework.cloud
        				
        
         spring-cloud-dependencies
        				
        
         ${spring-cloud.version}
        				
        
         pom
        				
        
         import
        			
       		
      	
     	
     		
      			
       				
        
         org.springframework.boot
        				
        
         spring-boot-maven-plugin
        			
       		
      	
     
    复制代码

application.properties如下：

spring.application.name=spring-cloud-eureka

application-peer1.properties如下：

server.port=8000eureka.instance.hostname=server1eureka.client.register-with-eureka=trueeureka.client.fetch-registry=trueeureka.client.serviceUrl.defaultZone=http://server2:8001/eureka/复制代码

application-peer2.properties如下：

server.port=8001eureka.instance.hostname=server2eureka.client.register-with-eureka=trueeureka.client.fetch-registry=trueeureka.client.serviceUrl.defaultZone=http://server1:8000/eureka/复制代码

启动类增加@EnableEurekaServer注解即可

import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@SpringBootApplication@EnableEurekaServerpublic class SpringCloudEurekaApplication {	public static void main(String[] args) {		SpringApplication.run(SpringCloudEurekaApplication.class, args);	}}复制代码

客户端配置

pom文件如下：

    
    	
     
      4.0.0
     	
     
      com.didispace
     	
     
      eureka-client
     	
     
      1.0.0
     	
     
      jar
     	
     
      eureka-client
     	
     
      Spring Cloud In Action
     	
     		
      
       org.springframework.boot
      		
      
       spring-boot-starter-parent
      		
      
       1.5.4.RELEASE
      		
      	
     	
     		
      
       UTF-8
      		
      
       1.8
      	
     	
     		
      			
       
        org.springframework.cloud
       			
       
        spring-cloud-starter-eureka
       		
      		
      			
       
        org.springframework.boot
       			
       
        spring-boot-starter-web
       		
      		
      			
      			
      		
      	
     	
     		
      			
       				
        
         org.springframework.cloud
        				
        
         spring-cloud-dependencies
        				
        
         Dalston.SR1
        				
        
         pom
        				
        
         import
        			
       		
      	
     		
     		
      			
       				
        
         org.springframework.boot
        				
        
         spring-boot-maven-plugin
        			
       		
      	
     
    复制代码

application.properties配置如下：

spring.application.name=eureka-clientserver.port=2001eureka.client.serviceUrl.defaultZone=http://localhost:8000/eureka/,http://localhost:8001/eureka复制代码

启动类增加@EnableDiscoveryClient注解即可。

import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;@EnableDiscoveryClient@SpringBootApplicationpublic class EurekaClientApplication {	public static void main(String[] args) {		new SpringApplicationBuilder(EurekaClientApplication.class).web(true).run(args);	}}复制代码

Controller层

@RestControllerpublic class DcController {    @Autowired    DiscoveryClient discoveryClient;    @GetMapping("/dc")    public String dc() {        String services = "Services: " + discoveryClient.getServices();        System.out.println(services);        return services;    }}复制代码

本机模拟运行2个Server，需要在hosts文件增加：

127.0.0.1 server1

127.0.0.1 server2

通过设置Program arguments参数启动2个Server端

启动后server1注册结果如下：

server2类似，通过Client端能够正常访问。

停止server1后，server2控制台报错Connect to server1:8000 timed out，但依然能够提供服务，是由于注册信息已经同步server2.