搭建Eureka服务端(注册中心)

 

新建一个maven项目 项目名为eureka-server

 

pom.xml

         
      
       4.0.0
          
      
       com.zns
          
      
       eureka-server
          
      
       0.0.1-SNAPSHOT
          
              
       
        org.springframework.boot
               
       
        spring-boot-starter-parent
               
       
        1.5.8.RELEASE
           
          
              
                   
                        
         
          org.springframework.cloud
                         
         
          spring-cloud-dependencies
                         
         
          Dalston.SR4
                         
         
          pom
                         
         
          import
                     
                
           
          
              
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-config
                
               
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-eureka-server
                
           
      
     

 

 

application.yml

server:  port: 8761spring:  application:    name: my-eureka-servereureka:  instance:    hostname: localhost  client:    registerWithEureka: false    fetchRegistry: false

 

在启动类增加注解@EnableEurekaServer

package com.zns;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@SpringBootApplication@EnableEurekaServerpublic class Application {    public static void main(String[] args) {        SpringApplication.run(Application.class, args);    }}

 

 

启动项目 访问 

 

搭建Eureka客户端（服务提供者）

 

新建一个maven项目，项目名为eureka-client-provider

 

pom.xml

         
      
       4.0.0
          
      
       com.zns
          
      
       eureka-client-provider
          
      
       0.0.1-SNAPSHOT
          
              
       
        org.springframework.boot
               
       
        spring-boot-starter-parent
               
       
        1.5.8.RELEASE
           
          
              
                   
                        
         
          org.springframework.cloud
                         
         
          spring-cloud-dependencies
                         
         
          Dalston.SR4
                         
         
          pom
                         
         
          import
                     
                
           
          
              
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-config
                
               
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-eureka
                
           
      
     

 

 

application.yml

server:  port: 8001spring:  application:    name: my-providereureka:  client:    serviceUrl:      defaultZone: http://localhost:8761/eureka/

 

在启动类增加注解@EnableEurekaClient

package com.zns;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;@SpringBootApplication@EnableEurekaClientpublic class Application {    public static void main(String[] args) {        SpringApplication.run(Application.class, args);    }}

 

 

增加一个PersonController

package com.zns.controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import com.zns.model.Person;@RestController@RequestMapping("/person")public class PersonController {    @RequestMapping(value = "/get/{id}", method = RequestMethod.GET)    public Person get(@PathVariable Integer id) {        Person p = new Person();        p.setId(id);        p.setName("name" + id);        return p;    }}

 

 

启动项目，再次刷新浏览 可以看到提供者已经注册到了Eureka

 

搭建Eureka客户端（服务调用者） 

 

新建一个mave项目，项目取名为eureka-client-consumer

 

pom.xml

         
      
       4.0.0
          
      
       com.zns
          
      
       eureka-client-consumer
          
      
       0.0.1-SNAPSHOT
          
              
       
        org.springframework.boot
               
       
        spring-boot-starter-parent
               
       
        1.5.8.RELEASE
           
          
              
                   
                        
         
          org.springframework.cloud
                         
         
          spring-cloud-dependencies
                         
         
          Dalston.SR4
                         
         
          pom
                         
         
          import
                     
                
           
          
              
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-config
                
               
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-eureka
                
               
                   
        
         org.springframework.cloud
                    
        
         spring-cloud-starter-ribbon
                
           
      
     

 

 

这里引入了Ribbon为例来调用服务

 

application.yml

server:  port: 9001spring:  application:    name: my-consumereureka:  client:    serviceUrl:      defaultZone: http://localhost:8761/eureka/

 

在启动类增加注解@EnableEurekaClient

@SpringBootApplication@EnableEurekaClientpublic class Application {    @Bean    @LoadBalanced    public RestTemplate getRestTemplate() {        return new RestTemplate();    }        public static void main(String[] args) {        new SpringApplicationBuilder(Application.class).web(true).run(args);    }}

 

 

增加一个TestController 来测试调用提供者

package com.zns.controller;import org.springframework.cloud.client.loadbalancer.LoadBalanced;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.client.RestTemplate;@Controller@Configurationpublic class TestController {    @Autowired        private RestTemplate restTemplate;    @GetMapping("/personGetTest")    @ResponseBody    public String personGetTest() {        String res= restTemplate.getForObject("http://my-provider/person/get/1", String.class);        return res;    }}

 

启动项目 访问 可以看到成功调用提供者服务