微服務nacos服務註冊與發現

一，以上一篇爲基礎 微服務從nacos配置中心得到配置信息

　　給service1, service2添加依賴

　　　　 <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>

　　給service1, service2添加配置項

nacos: discovery: server-addr: 127.0.0.1:8848 namespace: c22e5019-0bee-43b1-b80b-fc0b9d847501

二，實現service1, service2

　　分別編寫基礎的controller，向外提供restapi

　　啓動service1，service2，就會自動的向nacos註冊這兩個服務，服務名爲spring.application.name

三，測試，編寫調用service1, service2的demo模塊，

　　1，new -> module -> Maven -> 填寫xx -> finish

　　2，添加依賴

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
    </dependencies>

　　3，添加配置bootstrap.yml

spring: cloud: nacos: discovery: server-addr: 127.0.0.1:8848 namespace: c22e5019-0bee-43b1-b80b-fc0b9d847501

　　4，編寫啓動程序，編寫controller，編寫接口調用service1, service2　

　　啓動類：

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

　　接口調用：

@FeignClient(value = "service1") public interface UserClient { @GetMapping("/user/name") public String getName(); @GetMapping("/user/address") public String getAddress(); }

@FeignClient(value = "service2") public interface OrderClient { @GetMapping("/order/id") public String getId(); @GetMapping("/order/price") public double getPrice(); }

　　controller：

@RestController @RequestMapping("/demo") public class DemoController { @Autowired private UserClient userClient; @Autowired private OrderClient orderClient; @GetMapping("/test") public String test(){ return "test, name:"
                + userClient.getName() + ", address:" + userClient.getAddress() + "order_id:" + orderClient.getId() + "order_price:" + orderClient.getPrice(); } }

輸出：test, name:天涯, address:中國order_id:10000111##order_price:100.5

調用完成！