云原生 SpringCloud Alibaba 之 Nacos 注册中心样例实战

<!-- Spring Cloud Alibaba starter for Nacos Discovery -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>

<!-- Spring Cloud Alibaba starter for Nacos Config (可选，如果需要配置管理功能) -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>

spring:
  cloud:
    nacos:
      discovery:
        server-addr: ${NACOS_SERVER_ADDR:localhost:8848} # Nacos服务器地址
      config:
        server-addr: ${NACOS_SERVER_ADDR:localhost:8848} # 如果使用配置管理也需要配置
        prefix: ${spring.application.name} # 配置前缀
        file-extension: yml # 配置文件后缀

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

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>

@EnableFeignClients
public class YourApplication {
    // ...
}

@FeignClient(name = "your-service-name") // 服务名需与Nacos中注册的服务名一致
public interface YourServiceClient {
    @GetMapping("/api/example")
    String getExample();
}

@RestController
public class ExampleController {
    @Autowired
    private YourServiceClient yourServiceClient;

    @GetMapping("/call-example")
    public String callExample() {
        return yourServiceClient.getExample();
    }
}