0014-Eureka Provider集羣搭建

1. 工程結構

爲了演示方便所以建三個工程，實際生產是一個工程配置三份，端口不同

• eureka-provider-8001
• eureka-provider-8002
• eureka-provider-8003

2. 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>

3. yml配置

修改三臺的端口即可

server:
  port: 8001

eureka:
  client:
    serviceUrl:
      defaultZone: http://eureka-server-7001:7001/eureka/,http://eureka-server-7002:7002/eureka/,http://eureka-server-7003:7003/eureka/
#      defaultZone: http://eureka-server-8001:7001/eureka/
  instance:
    instance-id: eureka-provider-7001 # 服務名稱
    prefer-ip-address: true # 顯示ip地址

info: # 點擊註冊列表未服務出現的信息
  app.name: springcloud
  company.name: www.honor.com
  build.artifactId: @project.artifactId@
  build.version: @project.version@

spring:
  application:
    name: eureka-provider # 三臺服務必須一致

4. 主啓動類

根據項目修改爲EurekaProvider8001Application、EurekaProvider8002Application、EurekaProvider8003Application即可

@SpringBootApplication
@EnableEurekaClient
public class EurekaProvider8001Application {
    public static void main(String[] args) {
        SpringApplication.run(EurekaProvider8001Application.class, args);
    }
}

5. 增加服務

// Controller
@RestController
public class HelloController {
    @Autowired
    private IHelloService helloService;

    @RequestMapping("/hello/{name}")
    public String sayHello(@PathVariable String name) {
        return helloService.sayHello(name);
    }
}

//ServiceImpl
@Service
public class HelloServiceImpl implements IHelloService {
    @Autowired
    private HttpServletRequest request;

    public String sayHello(String name) {
        return "Hello " + name + ", This port is " + request.getServerPort();
    }
}

6. 驗證

• 服務註冊中心可以三臺註冊的服務
• 確保三臺服務都是可以正常使用的