SpringBoot：Eureka创建服务消费者

心已赠人 2022-11-21 01:27 152阅读 0赞

本篇接于上篇[《SpringBoot：Eureka创建服务提供者》][SpringBoot_Eureka]

*  pom文件

<dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>

*  配置文件

eureka:
      client:
        serviceUrl:
          defaultZone: http://localhost:20000/eureka/
    server:
      port: 31000
    spring:
      application:
        name: eureka-consumer

*  Application

@SpringBootApplication
    @EnableDiscoveryClient
    public class EurekaConsumerApplication { 
    
        @Bean
        public RestTemplate register() { 
            return new RestTemplate();
        }
    
        public static void main(String[] args) { 
            new SpringApplicationBuilder(EurekaConsumerApplication.class)
                    .web(WebApplicationType.SERVLET)
                    .run(args);
        }
    
    }

*  测试接口

@RestController
    @Slf4j
    public class Controller { 
    
        @Autowired
        private LoadBalancerClient client;
    
        @Autowired
        private RestTemplate restTemplate;
        
        @GetMapping("/hello")
        public Friend helloPost() { 
            ServiceInstance instance = client.choose("eureka-client");
    
            if (instance == null) { 
                return null;
            }
    
            String target = String.format("http://%s:%s/sayHi",
                    instance.getHost(),
                    instance.getPort());
            log.info("url is {}", target);
    
            Friend friend = new Friend();
            friend.setName("Eureka Consumer");
    
            return restTemplate.postForObject(target, friend, Friend.class);
        }
    
    }

启动项目，查看Eureka的管理页面，发现Consumer也OK了  
![在这里插入图片描述][20201029172913632.png_pic_center]

使用postman测试`localhost:31000/hello`接口，能看到消费者已经通过注册中心获取到了提供者的接口。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70_pic_center]

[SpringBoot_Eureka]: https://jiandansuifeng.blog.csdn.net/article/details/109364148
[20201029172913632.png_pic_center]: /images/20221120/1a4c7d3b3926412aae2ce9e0ffaf1146.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2x0MzI2MDMwNDM0_size_16_color_FFFFFF_t_70_pic_center]: /images/20221120/13ff6377c9be4d2583715c4929485bbc.png