Eureka入门服务拉取

Eureka服务注册与发现实战

最新推荐文章于 2025-08-11 10:14:23 发布

原创最新推荐文章于 2025-08-11 10:14:23 发布 · 530 阅读

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文章标签：

#spring #java #eureka #spring boot

本文介绍了如何在Spring Boot应用中集成Eureka实现服务的注册与发现。首先，我们导入了必要的依赖，并配置了application.yml文件。接着，展示了Controller中的代码，利用DiscoveryClient进行服务发现。最后，启动类启动应用并完成Eureka的集成。

1、导入依赖

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

2、配置application.yml:

spring:
  application:
    name: demo_consumer
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:10086/eureka
server:
  port: 9993

3、主要代码：
controller：
注意DiscoveryClient 要导入org.springframework.cloud.client.discovery.DiscoveryClient不然会注入不了

@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    @RequestMapping("/findAll")
    public List<User> findAll() {
        List<ServiceInstance> instancesById = discoveryClient.getInstances("demo_provider");
        ServiceInstance instanceInfo = instancesById.get(0);
        String uri = "http://"+instanceInfo.getHost()+":"+instanceInfo.getPort()+"/user/findAll";
        return restTemplate.getForObject(uri, java.util.List.class);
    }

}

启动类：

/*开启Eureka发现*/
@EnableEurekaClient
@SpringBootApplication
public class Starter {
    public static void main(String[] args) {
        SpringApplication.run(Starter.class, args);
    }

    @Bean
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }
}